Home
Absent father, violent kids!When children are growing up, they undergo a lot of hormonal changes and have varying emotional requirements. If these requirements are not fulfilled by the presence of both parents, they can develop into violent adults. Single parenting for a mother, is extremely difficult; it is simply impossible for her to fill the void left behind by an absent father. When a couple cannot live under the same roof due to major differences, they separate or get divorced. However, the requirements of the children remains the same; they still need the care and love of their mother and the support and guidance of their father, to grow up without any complications or insecurities. Children usually look up to their father as a symbol of strength and security and in his absence, they might not receive the same support and may feel inadequate and insecure. If during their childhood kids do not get the support and security that only a father can provide, they might bottle up the feelings inside; and these feelings usually explode when they grow into violent adults. A Father's Absence is Critical Due to whatever reasons, if the father is not present in the family during the most important growing periods of the kids, they have more chances of turning to crime and drugs, than the children who have a father by their side. According to a research conducted by the Research Institute of the McGill University Health Center located in Quebec, a father's absence, especially during the child's prime growing period, can lead to behavioral problems when they grow into adults. The research was carried out on mice raised only by their mothers and showed that the mice that were brought up in the absence of their fathers, were  abnormal and aggressive in their social interactions. Gabriella Gobbi, who is an author and a senior associate professor at the McGill University - Faculty of Medicine, says that even though the experiment was carried out on mice, the findings are highly relevant to the behavior of humans, under similar circumstances. Role of Fathers and Fatherhood Another research carried out by Dr. David Popenoe, a renowned sociologist, throws light on the role of fatherhood and fathers. According to Popenoe, fathers should not be treated as mere second adults in the family. Fathers, who are more involved in their family, have a certain positive impact on the children, which no other person is capable of. Fatherhood is an important responsibility and the presence of fathers in a family, directly influences the well-being of the growing children. In the absence of fathers, mothers may try their level best to provide their children with the right kind of upbringing and education. However, they might fail to give the kids the support and strength that only a father can provide. Due to this, children fail to face the challenges of life head on and are unable to handle their problems with an open mind. When a lot of emotions get bottled up inside, in most cases, they find their release in the form of violence. Sometimes, children also lack the right kind of guidance in their growing years and mothers fail to handle their changing emotional requirements, due to which these kids become increasingly frustrated and violent as they grow up.  
Sunshine for busy executivesMost people working in corporate offices, spend long hours within the confines of concrete buildings. Some business sectors like IT and manufacturing even have their employees working in night shifts. What we don't realize is that, in such a setup, our bodies do not get adequate dosage of sunlight. Lack of exposure to sunlight is responsible for a range of diseases and health conditions. The body requires sunlight just as much it requires food for its nourishment. Long hours of work in glazed business buildings under artificial lighting, deprive the body of this most basic need, thereby creating a deficiency of the vitamin D group. This deficiency then goes on to create several imbalances in the body, and contributes to diseases. Besides these, Vitamin D deficiency can also cause general muscle weakness, muscle and bone aches and pains and osteoporosis, due to the inability to utilize calcium. The best source of Vitamin D is natural sunshine, and that's why it is called the sunshine vitamin. Vitamin D can be had in the supplement form too, but it is still no match for natural sunlight. In a paper titled 'Vitamin D Deficiency' published in The New England Journal, M F Holick writes that, arms and legs should get exposure to sun for 10-15 minutes every day. "The amount of vitamin D produced depends on the intensity of the UVB in the sun and many other factors. Darker-skinned individuals may need 5-10 times more exposure than a fair-skinned person, in order to make the same amount of vitamin D." Tap that sunlight Early morning is the best time to get out in the sun. There's no better time to get that walk, than in the morning. Park your car a little away from the office building if possible, and walk to your office in the sun. When you take a tea break in the evening, head outside, instead of going to the in-house cafeteria.
Smell like roses, without the thornsYou bathe regularly and use the best possible deodorants, underarm anti-perspirants, panty perfume but the bad odour just doesn't go away. Pat yourself dry Very often you have a leisurely bath with scented bubbles and what not but when it comes to drying your body thoroughly, well you just pat yourself quickly, for you are in a hurry. The moisture on your body then attracts bacteria with fungi and they cause that embarrassing mouldy kind of stench on your body. So make sure you dab yourself thoroughly dry all over your body. Especially in places like the lower back where it is difficult to reach without some really flexible shoulder joints. Use the archer's swipe (The towel extended between the right hand over the head with  the left hand extended back to form the bottom grip, which looks like an archer reaching for a bow from the quiver). In case you are endowed with love handles and folds of fat then be generous with the patting, as those are the parts most susceptible to host bacteria. Change clothes often If you wear the same set of clothes and lingerie then you are surely going to have an odour which is lingering. So for those ladies who occasionly wear the same set of clothes without washing, the sweat is going to accumulate in there and raise a stink. Remember the Celine Dion song? It's a new day, a new start! Menstruation + Stress = Bad smell There is nothing that you can really do about your periods. Instead, try and be a little more extra careful during those 4 days. You can have an extra jab at the deo bottle or perfume lotion. However stress, nervousness and fear also leave chemical traces which come out along with the sweat. This adds to the bad odour. Humble pie for dessert? What you eat also affects the way you smell. Go easy on the garlic, onion rings and fish for they can make you smell slightly worse than an open sewer. Always rinse your mouth after eating and use a good minty mouthwash if at all you choose to pepper your meal with onion and garlic to ward offthe evil eye. You can add conditions like diabetes to cause a fruity kind of odour. Well in that case make sure you exercise regularly so that the skin sweats out the toxins. In case you are the extra-sweaty types then use medicated soaps or ensure you use steam baths regularly to keep your skin pores open.
Pregnancy and HIVMothers with higher level of viral load have been found to deliver infected babies. However, no amount of viral load can be safe as infections can occur any time during pregnancy. A high level of precaution is necessary during this phase. Mostly infection occurs during delivery but that's not the only way through which it can spread. HIV-infected mothers should not breast-feed, as virus can transmit through breast milk too. Antiretroviral medications are used to reduce chances of transmission of HIV. Keeping delivery time shorter can reduce the risk of transmission. Most of the times babies born to positive mothers are positive for HIV. Babies infected with HIV will have antibodies made in their system and will continue to test positive. But if babies aren't infected, the mother's antibodies in baby's blood will eventually disappear and babies will test negative after about one to one and half year. HIV positive women should consider possible problems with antiretroviral medications for HIV before getting pregnant. Talk to the doctor about choice, indications, and contraindications of these drugs. There's a risk of missing doses due to nausea and vomiting during early pregnancy, hence giving HIV a chance to develop resistance. Some doctors prefer the practice of stopping or modifying medications during pregnancy to lower the risk of birth defects. Short course of treatments can help eliminate or reduce risk of transmitting HIV to a newborn; but, short treatments increase the risk of resistance to the drugs used too. There is a risk of birth defects due to antiretroviral drugs during the first 3 months of pregnancy. Pregnancy does not worsen mother's HIV disease, but any HIV positive woman planning to get pregnant should discuss treatment options thoroughly and all the pros and cons with her doctor.   
Obesity is not just an adult problemWith fast food chains multiplying in the country faster than you can say Maharaja Mac, there is an urgent need to monitor our diet. While most of the nutritional advice is directed at adults, kids too are exposed to the dangers of empty calories. Childhood obesity is on the rise across the world including India. How does obesity affect children? And what can parents do to ensure this doesn't happen? We will try to answer some of your questions. What are the causes of obesity in children? Lack of physical activity: Nowadays, children spend more time sitting at home - doing their homework, watching TV, and playing games on PC, console tablets or smartphones. Play time on the ground outside has shrunk. As a result, they don't get enough exercise. Unhealthy food choices: Our busy lifestyles leave us with little time to plan for or prepare every meal. The alternative is to go for quick-to-cook food like Maggi. Food ordered from outside too is invariably unhealthy. While having it once in  few days is not a problem, making it a way of life leads to problems. Overweight parents: The eating pattern and lifestyle of parents has a big influence on a child's health and weight. Obesity can be hereditary. Lifestyle and environment: When parents are unable to pay much attention on their children due to their busy schedules. As a result children rely more on ready-to-eat food or junk food. Genetic factors:  For some kids, genetic factors may be the reason behind obesity. A rare genetic disorder called as Prader-Willi syndrome causes severe weight gain in kids. What health problems can obesity cause among children? Type-2 diabetes Eating disorders like bulimia or binge eating (excessive eating or drinking) Problems with foot structure Liver problems Respiratory disorders - breathlessness during exercise Difficulty in breathing while sleeping causing snoring or poor sleep What can parents do to prevent or control obesity in children? Parents must make kids understand the ill-effects of eating junk food. They must limit their snacking on junk foods. Encourage the kids to participate in physical activities and outdoor games. Make exercising a routine for the children. Join them during exercising to make it a fun time for the family. Set an example for your kids by following a healthy diet and eating habits yourself. Limit TV time and playing videogames. Parents must include whole grains, fruits and vegetables in the diet of their children. Limit fats intake to not more than 25%-30% of total calories. Make sure to go through the nutritional label while purchasing any processed food.  
Tips and tricks to deal with my toddler's tantrumsWhen your child is having a tantrum, it may usually be for something that it wants and cannot have. Throwing a tantrum is a child's way of getting what it wants. Conversely, giving in to the child's demands may be the easy way out for the parents too. But always remember that giving in is not right. The child may get habituated to this and it may prove quite a nuisance to you too. Learn to say no, gently but firmly. Giving an acceptable reason for your 'no' and also an option at the same time works wonders. All said and done, children are not that easy to handle. If your child doesn't fall in line and is adamant, let it pass the phase. Screaming out the rage, throwing away things may help the child. When the anger subsides, looking at the destruction and the obvious uselessness of it may help the child realize his efforts were futile. But be careful that the child doesn't get physically hurt in this process. For some kids, a gentle hug helps soothe the anger pent up. Tantrums in public places can be extremely embarrassing. In such situations, do not argue or scold your child or order him to hush up. It will only end up making the child more adamant. Wait till the storm subsides. Take him out to a quieter place and talk gently but firmly. One thing to remember here is to never let the child know of your embarrassment and concern that you are in a public place. Children are very smart and may end up using this to work things in their favour. It is not easy being a toddler and it is definitely not easy being a toddler's parent either. By the time your toddler is old enough to go school he will have overcome this stage.  
Balancing marriage and work: The top 5 tricksFor women juggling between home and work is very difficult. Yet, the number of women choosing to go out and work, while managing their homes, has increased over the years. This is because a successful career helps a woman establish her identity in society, gain respect and do justice to her inherent qualities, passions and dreams. So, a successful working woman, is a happy woman and statistics show that such women also keep their kids and spouses happy. More stable marriages During the seventies, when women started entering the workforce in large numbers, there was an instant rise in the divorce rates. However, over the past decade, the divorce rates among working couples have actually declined. Today, men have extensively adjusted to the idea of having a working woman, as a partner. In many countries, men actually share the domestic chores and devote time to childcare, so that their women can successfully handle both, work and home. However, the main responsibility of the home and the kids is still primarily, in the hands of the women. Here are the six keys to manage your work and marriage successfully: Find the right job You can ease out the stress of managing the work and home front, if you make the right decisions. Studies indicate that couples having access to less demanding work, have better sex and better relationships and hence, are less likely to be stressed out. However, in case the working hours are long, the situation can become the opposite. Hence, it is important to find an exciting job, over which you can still have control, especially when you have small kids at home. Adjust the working hours Most women have to leave their careers halfway because their husbands work for long hours and there is no one available to care for the kids. If the wife too is good at work then, the couple should take up jobs that provide an opportunity for both of them to work, since doing this will keep both of them satisfied. There is a possibility that the husband, or the wife, may lose a bit on the income in this adjustment, but ultimately it increases the chances of having a happier marriage. The negative impact of leaving work If a career-oriented woman leaves her job due to family demands, it can shake the very base of the marriage, while also leaving her, depressed. Also taking a break, means you have to catch up very fast when you want to restart your career, which in reality, is quite difficult. In these situations, there is also a huge wage gap, between what you used to get before your break, and what you are getting after, that can lead to depression. Working moms help fortify the relationships between kids and their fathers When the father spends time babysitting the children, a closer bond develops between the kids and the father, which is usually not possible in families where the dad goes to work, full time. Studies show that children raised with equal devotion from both father and mother, have higher goals and aspirations and are even more empathetic. Feel less guilty A working woman usually feels guilty because she cannot spend as much time with her children, compared to the dedicated housewives. However, if the husband shares the duties related to bringing up the children both parents can be happy while playing their parts well for their kids. A woman with a successful career is positive and confident about everything she does, which ultimately makes her family happier.
Afraid of the dark? understand your fear and cure it!Scotophobia, more commonly known as Nycotophobia, is a psychological illness, where the patient is afraid of the dark. Children are more prone to this fear, though it does affect quite a few adults as well. The dark often represents insecurity and uncertainty to children, and it symbolizes their entrance into an unknown territory. If the children are alone during their first few encounters with darkness, the absence of parents (who exemplify safety), tends to amplify this crippling fear. While most of us do actually possess this fear in relatively small amounts, as we grow up the fear diminishes. However, there are those of us who might carry this fear of the dark into their adulthood and in such cases, the fear is usually accompanied by quite a few intricate issues. People often tend to externalize a set of conflicting feelings about a certain situation, towards something else. For instance, you might be worried about your children; but your mind may externalize this fear, via your inefficiency at work. This process is called externalization. So, when it comes to the root of your fear of darkness, it is possible that at some point in your past, you experienced something untoward, which through externalization, inculcated this fear of darkness, deep into your psyche. Evolutionary Ties to Darkness: Many scientists have pointed out that this phobia might be linked to the process of evolution. Since predators hunt for their prey at night, we might have inherited this fear of darkness from our ancestors, who believed that darkness was a space where they could be attacked by wild animals. However, recent studies have shown that  Scotophobia begins at approximately the age of two in children, and thus, it cannot be said to be innate to us. In a study done by Ryerson University involving over 90 students, it was found that people who are afraid of the dark, are more likely to be poor sleepers, than those who are not afraid of it. More interestingly, it was discovered that any kind of noise made while the people with this phobia were asleep, frightened them the most.. Symptoms of Scotophobia: The first symptoms of this fear are the resistance to visit dark places and the yearning for company when such situations arise. However, many a times adults who are suffering from this fear, do not reveal it due to the added fear of embarrassment and this, sometimes, results in outbursts of rage when they are forced to go out for an event at night, or to confront the dark under any such circumstances. A person battling this fear may experience panic attacks, sweating and trembling prior to, or while staying in the dark. The blood pressure also rises, accompanied by chest pain and lastly, a difficulty in breathing. Diagnosis of Scotophobia: In children, this fear can be easily verified by their behaviour. However, adults might require further assistance, due to their natural resistance to openly admit to such a fear. Scotophobia can be diagnosed through a comprehensive psychiatric evaluation. Following this, your psychologist would be able to give you an idea of the source of your fear as well. Pursue a course of treatment immediately after the discovery of the phobia, which will ensure a faster and more effective recovery. Treatment of Scotophobia: The process of 'desensitization' is most commonly used to help with such a phobia. In this form of treatment, the patient is slowly exposed to the object of fear, in a situation where she/he will not feel vulnerable. This is done by asking the patient to confront the dark along with another individual who symbolizes safety for him/her. This could be a parent or a friend. Night lights can also be installed to gradually reduce the fear. You may try certain breathing exercises, which will reduce the panic attacks that accompany this fear. Hypnosis has also been said to be very effective in dealing with this phobia. If your psychologist sees fit, you might be also prescribed some medicines; antidepressants are given in some cases. Joining a self-help group is also a good option, in addition to your psychological treatment.  
When the grey matters!Greying of hair happens to all of us at some point in life. Some may get it early and other fortunate ones may get it when they are 50. Premature greying and hair fall is a common problem faced by 70% of females in India these days. What are the causes of greying of hair and what can be done if your hair starts to go grey early? What are the probable causes of grey hair and hair fall? Deficiency of nutrients in diet. Excessive stress. Dandruff. Diseases like thyroid disorders, anemia, and vitiligo. Side effects of certain medication. Hair problems are seen more in women who smoke or drink. Childbirth and menopause are the periods of life when most of the women invariably have hair loss. Hereditary pattern of premature greying. Today's beauty procedures like coloring, bleaching, dyeing, perming, and straightening cause hair problems at a young age. Environmental pollution. Treatment and prevention Have a balanced diet. Ensure proper nutrients reach your body in every meal. If you are anemic, treat it with proper medication. This can be an underlying cause. Have a good sleep. Avoid tension and stress. Apply oil regularly and massage. Drink lots of water. Avoid exposure to chemicals. What can be done to hide the grey hair? Apply amla oil to your hair to make it healthy. Apply henna, lemon juice, fenugreek seeds paste, made in an iron container, on your hair to give them a color and reduce greying. Boil gooseberry pieces in coconut oil. When they turn black apply it on the hair. If you have 45-50% grey hair then you can use a permanent hair color.
How to communicate with a patient who has a strokeThe first and the most important thing to communicate with the patient, is to give undivided attention. Give attention to his activities, gestures, his facial expressions through which he may try to communicate so his feelings could be understood. Eye contact is also important but the patient having stroke may look at you square in the eyes but he may not respond to your conversation. While communicating with the patient you should always stand in front and tune out all the other sights and sounds in the room. Maintain full silence around the patient in the room, turn down the volume of the television, radio and ask other people in the room to be silent. You may communicate with the patient by making contact by touching the hand, chin, cheek or areas which are not affected by stroke. As the side which is affected by stroke, does not have any sensations. You may communicate with the patient through his family member by telling the family member to communicate with patient by saying, "Look at my face"; through this we can gain the patient's concentration. You should always speak clearly with the patient in a normal soft volume. Express your ideas in simple terms, form simple sentences, do not use complex words. You may repeat the sentences or an important term again. For example to ask if the patient wants tea, repeat the word 'tea'. More complex thoughts can also be similarly conveyed and repeated. You may also use hand gestures with clarification like doing Hello by waving your hand or through your hand action, you may ask questions like, How are you? Are you ok? What do you want? Through this both caregiver and stroke patient can benefit. You may ask your patient to point out whatever he wants or if he needs anything. And gradually he will develop the habit of pointing the daily items like television, newspaper, remote, eyeglasses radio, drapes an uncomfortable foot, the patient can indicate any pain or headache. Through this communication we can make the patient learn, use mechanical lifts to get in and out of the bed, and with the help of the attendant by demonstrating the patient how to use it. Sometimes when the communication does not work, take a break, give it time and try again, do not get frustrated and reassure the patient that yes, he or she can do it. Good communication with the patient is very important as they cannot speak their basic wants and needs clearly. The patients suffered a stroke also have slurred speech. There is a deviation of the angle of mouth. They are mostly bed ridden and could not carry out the routine activities.
Easy tips for fresh breathBrushing your teeth twice daily is not enough for fresh breath. How well you brush, and how long you brush are equally important, as are flossing regularly and eating right. 19 year-old Rita suffers from bad breath. It is a huge drawback for her. No one at college wants to be her friend. Her doctor suggested that she brushes twice daily, and also prescribed a good mouth wash for her. Following this advice has not helped her much. There must be millions of us who identify with Rita's problem. Halitosis, or bad breath, is a huge embarrassment not only for the person who has it, but also for the person who has to bear it. It can be a cause of social isolation, as seen in Rita's case. A fresh smelling breath is a sign of good hygiene. A fresh breath makes you more confident of yourself, and you feel ready to face any challenge that life throws your way. So, what do you do to keep your breath minty fresh all day? Brush twice a day, and use a good mouthwash regularly, would be your reply. But is this enough? Let us start by busting a few myths here! Mouthwash will give you fresh breath all day long. It won't. It will only make your breath fresh temporarily. As long as you brush your teeth regularly, you need not worry about bad breath! Brushing your teeth is necessary. The key here is how long and how well you brush. Most of us brush for 35 to 40 seconds, which is just not enough. One needs to brush properly over all the surfaces of the teeth to clean them well. This should take you not less than two minutes! And you thought brushing twice daily was enough! Here are a few tips to keep your breath fresh: Bad breath is the result of bacterial activity in your mouth. One of the reasons for bacteria to grow is due to dryness. So, never let your mouth go dry. Keep your mouth well hydrated. Drink loads of water. One of the other reasons for bacterial activity in the mouth is the food particles that get accumulated in the cracks between your teeth. Be sure to rinse your mouth well every time you finish eating something. Flossing is an activity you should never ignore. Flossing does what regular brushing cannot do; It removes the food stuck between your teeth. Avoid foods that cause bad breath-like coffee, tea, sugary drinks, garlic, onions, or broccoli. Sugarfree gums are a good way to keep your mouth hydrated, as they increase the flow of saliva. Gel based toothpastes may give you a fresh breath, but the effects are temporary. Go for fluoride toothpaste that is good in the long run. Yoga poses like the Kapal Bhati Pranayam, Sheetali Pranayam, Sheetkari Pranayam, Yoga Mudra, Simha Asana are effective in combating bad breath. Visit your dentist regularly, and get your teeth cleaned professionally. Avoid junk food, and foods that are rich in sugar and fats. Instead, go for fresh fruits and vegetables. Quit smoking and alcohol consumption. Simple things like brushing daily, flossing daily, rinsing your mouth after every meal, and eating right can help you keep your breath smelling fresh all day long.
Pulling out - Is it an effective option for contraception?What is the 'Pulling out' method? 'Pulling out', 'Withdrawal' and 'Coitus Interruptus' are all the different names for probably one of the safest methods of contraception. It involves the male partner withdrawing or pulling out his penis just before ejaculation. This ensures that no semen has been ejaculated into the vagina or vulva of the female partner. Since there are no sperms travelling inside, the result is - No Pregnancy! Is this method really effective? Like all methods of contraception, the effectiveness of the pulling out method also depends on how correctly it is done. This method requires a lot of mutual understanding between the partners. The male partner must also exercise great self-control and accuracy in knowing when he will reach the highest point of sexual excitement so he can pull out at the right moment. Statistics have the following things to say Of women whose partners use withdrawal, 4% become pregnant each year if they always do it correctly, and 27% become pregnant each year if they don't always do it correctly. Ejaculating close to the vagina or vulva would mean that the sperms still have a way to travel inside the vagina. At times the pre-ejaculate fluid may also contain a few sperms from the previous ejaculation that may end up causing pregnancy. As a precaution against this, experts suggest the male partner pass urine before the sexual act. Withdrawal method of contraception is the best option for members of religious groups in which using contraceptive devices like pills, condoms or IUDs are a form of sin. Withdrawal method does not protect you from HIV/AIDS and other STDs. What are the advantages and disadvantages of this method? Advantages It is simple, safe and convenient. It is the best method when no other contraceptive method is available. It has no side-effects It does not require a medical prescription. It does not alter the menstrual cycle. It does not affect future fertility. Disadvantages Requires great self-control, experience and trust. Not suitable for men who suffer from premature ejaculation Not suitable for teenagers and sexually inexperienced people. Does not ensure protection from sexually transmitted diseases and HIV/AIDS. Less effective than other methods of birth control. May interfere with sexual pleasure due to nervousness and anticipation of pulling out at the right time. The pull out method is thus one of the safest methods of contraception, provided one has a thorough understanding of one's body, trust in the partner and a huge amount of self-control.
Smoking causes impotence!Men who smoke heavily are twice as likely to suffer from impotence or erectile dysfunction. The link between smoking and ED has been established beyond reasonable doubt. Smoking causes a hardening of the arteries or blood vessels. For a penis to grow erect or tumescent there has to be a healthy blood supply. Now imagine the cross-section of a smoker's penis where there are plenty of blockages and hardening of the blood vessels. Can the penis then grow erect with so many hindrances to the blood? There is also an acute loss of sensitivity to the penis which is a direct contribution of smoking! Previously, alcohol was a hot favorite of the medical lobby when it came to 'impotence.' Wish smokers could say the same thing about moderate smoking! Even moderate smoking can make an existing condition of impotence worse. One could make changes to one's lifestyle and diet and curb stress to treat ED (erectile dysfunction), but all these will come to naught unless one really resolves to give up smoking permanently. Just within a few hours of kicking the butt, the body starts to repair itself. Of course, it may take longer for the blood vessels to actually undo the blockages and have a free run for the penis, but it will certainly happen, slowly and surely. Smokers may have an underlying condition of anxiety, which is made worse by nicotine, which in turn causes performance anxiety, not greatly helped by blocked blood arteries. So smoking not just makes you physically impotent, but also mentally impotent too. It is a powerful narcotic which is hateful to the body and spiteful to its salubrity. Please enroll into a 'stop smoking now' campaign with the help of friends or family. Check for any 'nicotine anonymous' programs in your neighborhood or just do it all by yourself. Otherwise, the only thing hard about your penis will be hardened arteries and lots of hard luck!
FAQS
T&C FAQS