Home
Tips for the new fatherWhen a baby is born, all the attention is on the mother and the baby. And rightfully so, since the two need all the care in the world. However, the role of the father is very important even at this stage. The new dad has lot of responsibilities on his hand - he has to take care of both mom and the baby without getting annoyed or irritated. Here's how to do your best as husband and dad: Playing an active role in your child's life is vital for his emotional, physical, and cognitive development. Hold your baby as often as possible. By directly caring for your infant, you will learn about the baby's needs, how he communicates, and what comforts him best. Be prepared to feel left out at times. Your wife utilizes most of her energy and attention on the new baby. Be extra supportive and patient. Delivering a baby can be traumatic. Hormones ebb and flow. If there is ever a time to understand and care for your wife, this is it. Dads need to be more supportive and helpful. Share tasks like changing diapers, help around in the house by doing some household work like laundry. Talk to other new fathers about your experience and theirs. Most new parents experience a loss of sexual intimacy. Abstinence during pregnancy, pain, perineal tear, and breastfeeding can inhibit a woman's desire to have sex. Men can feel betrayed if rejected physically and mentally. It is important to talk about your feelings. Choose ways like cuddling, kissing, and holding hands to be physically intimate. One of main roles of a father is that of a protector. There are many ways you need to do this. Safety is one: child-proof your home. Dads now need to take care of driving, diet, and risk taking. Your baby needs you for a long time. Being healthy and happy dad is one of the greatest gifts you can give your kid. Dads need to provide financial protection to the new child. So get a life insurance, car insurance, an emergency fund, and a will. Try your best to spend as much time as possible with your new baby. While work may be your passion, it won't be long before children grown and no longer want to spend time with you. Take advantage of these years. Give the tiny tot gentle hugs. Dads shouldn't be afraid to show affection. Babies need physical contact, and not just from their moms. Snuggle with them, hug them, and kiss them. Read a baby-book to your child. Babies do understand. Sing him a gentle song or play a very soft music. Find out what makes your baby happy. Be good to the mom. Dads should be good and loving to mother of their new baby. Give her some time alone and babysit while she goes out, show affection to her, and give her little surprises. Because when the mom is happy, the baby is happy and the dad will be happy too.  
Breast lumps- myths busted!The rise in the occurrence of breast cancer in women, since past decade or so, has made women, especially in the urban areas, very cautious about lumps in their breasts. Whenever there is a small lump in the breast, the first thought that comes to mind, is may be this is cancerous. However, instead of taxing your brain with worries, it is better to take action and consult your caregiver. Here are some of the myths that are regularly associated with breast lumps and the real facts related to the same. Myth: If there is a breast lump, it must be cancerous Statistics reveal that out of 10 cases of breast lumps in women, only 2 are cancerous. More often, these lumps are due to fibroadenoma or cysts. In many women, lumps are formed during the menstrual cycle and they go away after it ends. It is not simply possible to tell exactly what kind of lump it is, just by feeling through hands. However, it is important to detect the composition of the lump and to do so at the initial stages, so that if it is detected cancerous, early diagnosis and treatment can save your life. Myth: If your mammogram is normal, you are safe and the lumps are not cancerous This is not particularly true. To detect the presence of cancerous cells, you need to get more tests done; an ultrasound, an MRI and also a follow up mammogram, to get a second view of the lump. Doctors also suggest a biopsy to be 100 percent sure of the diagnosis. If the lumps persist but there is no detection, your doctor may ask you to keep doing the tests at frequent intervals, to assess the development. Myth: Malignant breast lumps do not cause any pain Although breast cancer patients do not suffer from much pain, this does not mean that if you do not have pain, the lump is non-cancerous. There are different types of breast cancers; and in some types such as the inflammatory breast cancer, the patient can suffer from warmth, tenderness, redness and swelling, followed by pain in the lumps. Myth: If you get a lump while breastfeeding, it is not cancerous It is true that breastfeeding reduces the chances of development of cancerous cells. But there is still a possibility and hence you should not ignore the formation of lumps. It is advisable to immediately get an ultrasound to confirm the condition of the lump. Myth: Lump in young women cannot be cancerous Women can develop breast cancer at any age. Hence, if you have a breast lump at a young age, or even if your teenage daughter has developed a suspicious lump in her breast, you should always get it checked, at the earliest. Most often, cancer develops in the breast when women are past their menopause period. But this, in no way means, that they cannot get it at younger age. Myth: Only a larger lump can be cancerous, not a smaller one Lumps in the breasts can be of all sizes; and the size, does not determine the presence of cancerous cells. According to breast-imaging specialist at New York's Manhattan Diagnostic Radiology, Melissa Scheer MD, you must immediately see a doctor, whenever you feel the presence of even a tiny lump, because, a small lump too may turn out to be aggressively cancerous. Most often, the lump in the breast is non-cancerous; however, it is advisable to consult your caregiver immediately, once you discover the lump for the first time.
Leg toning exercises for womenFor those women who will leave 'no stone unturned', here are a few great exercises which work superbly on the legs and whole body. For those who have always wanted a great pair of legs, don't change your jeans brand. Just change your brand of exercise. Here are great leg toning exercises that can make your legs attention grabbers. Well-shaped legs are what every woman desires especially as it signifies 'movement', 'mobility' and 'strength'. When we say legs we mainly mean the thighs, the calves and the feet. To get more precise the quadriceps of the thighs the hamstrings and the hip adductors are the prime targets of most exercises. A complete leg work out would also include the 'Tibialis Anteriors' or the shin muscles. Exercising the legs can be quite a frustrating thing especially if the leg muscles don't show any cosmetic improvement. Here is an exercise regimen which will ensure that you will get those attention-grabbing legs along with the strength, flexibility and tone which you have always desired. The stand This is probably the most undermined exercise of them all since it doesn't involve lugging heavy weights around or running for miles or squatting! It is a foundation exercise for the legs.  Choose your favorite spot on the floor and just stand erect with both feet together and toes pointing forward. Hold the hands straight at the elbows and keep the shoulders square. Tuck the chin in and do not bend your knees. Feel the ground under the feet. Now flex your thigh muscles and keep your feet firmly on the ground. Direct your attention towards the back of your thighs and keep your knees taut. Stand firm for about 3-5 minutes initially and gradually extend to five minutes or more. This exercise is simpler than it actually is as it keeps the thighs taut and firm. The entire leg gets a marvelous stretch and any faulty standing or postural habits create unnecessary tension and uneven hip alignment. The standing pose will be your first step towards trim and well-sculpted legs. The One Leg Extension After you perfect the stand, here is another great leg exerciser - The one leg extension Perform a stand as in the previous exercise for about 30 seconds. Once you get your grounding and feel your foundations beneath the feet, take a deep breath. Now flex your thigh muscles and keep the kneecaps taut without feeling any strain. Bend the left leg at the knee and raise it without bending at the right leg. Now catch hold of the big toe with the left hand and hold the pose for a few breaths. You will initially struggle for balance as you have to keep the other leg straight. Now that you have caught the big toe of the flexed leg gradually straighten the leg out without letting go of your grip. This is a challenging pose especially for the hamstrings, the hip flexors and the calves since the leg muscles are going to be a little tight especially around the hips and the hamstrings. With regular practice, the pain will ease and then you can even try and take the toe towards as high as you can with the aid of your left hand. Repeat with other leg following the same sequence. One Legged Squat The one legged squat is a superior exercise to the two legged variety is that it doesn't require many repetitions as it is quite a strenuous exercise even for advanced exercisers. Stand with the back of a chair within easy reach initially. Extend the right leg out first and squat down to your heel with your left. Once you have reached the end of the squat try not to touch extended leg as there comes the difficult part - getting up to standing position without touching the floor with your hands for support. Raise yourself to standing position and repeat with other leg. You can do about 3-4 sets with the same leg or alternate legs using the back of a chair for hand support as you squat deeply. The single legged squat exercises the gluteus, the knees and the entire hip joint and also gives lower back strength. Initially your knees might hurt so don't try this without support of a chair or a partner. Stop in case of intense pain. Step Training If plain jogging doesn't do the trick for shapely legs for you, try using stadium stairs or any gradient which is at 30 degrees and comprises even steps. Your regular apartment stairwell or even a pedestrian over bridge can do the trick. First set only walk up one step at a time. Second set do alternate stairs. For the third set you can sprint up as fast as you can the entire flight of stairs or halt for exactly ten seconds when tired and start again. You have the option of stopping as many times you wish as long as you start again after ten seconds. This can work up quite a sweat and regular step training works out and touches muscle groups that even normal running or squats cannot reach.
High blood pressure in the little onesIf you are asked to paint a picture of a patient of hypertension, how would it look? Leave the details aside, would you paint an old person, a young person or a child? Most likely, you will paint an old person or may be a middle-aged person. But a child, who would think of a child to have high blood pressure! It may be difficult to believe for most but not only is it possible, its incidence is also increasing gradually. In fact, hypertension in kids is becoming quite common. Studies in USA show that up to 5% children and adolescents have hypertension. What is it? High blood pressure in children and adolescents is also called as pediatric hypertension. Pediatric hypertension is defined by the blood pressure recorded on the mercury, in comparison to the given standard range. As a child grows, there is rapid development in all the milestones. For children, there are percentiles defined for all parameters for various age groups. In children, when the blood pressure is above the 90th percentile but below the 95th, it is called prehypertension. When it is above 95th percentile, it is diagnosed as hypertension. There are no distinguishing symptoms of pediatric hypertension, so it may easily be missed. Please make it a practice to get your child's blood pressure checked on routine visits for medical examination. Why does it happen? High blood pressure in children under ten years of age is usually secondary to some other health condition. It could be due to an underlying heart disease, kidney disease, hormonal disorders or genetic abnormalities. This demands treatment of the main problem. Primary hypertension is noted in older children, over 6-10 years of age and adolescents. There is no specific cause identified for this, other than lifestyle, obesity, rich foods and family history. How bad could it get? Children may show a disordered sleep pattern when they have hypertension. They may suffer from sleep apnea, reflected by snoring or abnormal breathing. Besides sleep, the other effects of hypertension are the known ones. In the long run, it could lead to heart disease, stroke or kidney disease. What to do? It is very important to control the blood pressure from a young age. Regular check-ups and monitoring of the BP is needed. Thorough examination is a must to identify whether the hypertension is primary or secondary. Treatment by medicines is recommended in secondary hypertension, where the underlying condition is to be tackled along with the management of blood pressure. In cases of primary hypertension, medication is suggested only in extreme cases. Otherwise, lifestyle management is the key. It is not a healthy option to start anti-hypertensives this early in life. Give your child healthy food, help him/her maintain the ideal body weight and make sure he/she gets enough exercise physically. The sooner we identify the problem, the better are the results with a disciplined lifestyle. The unhealthy lifestyle is creating chaos in all our lives. How long the kids would have escaped? Our lifestyle reflects on our kids. Follow a healthy routine and keep the family healthy!
Faking illnesses - An illness in itself?In 2008, a 28 years old woman in the US shared some shocking news with her friends. She had been detected with cancer. She posted updates on social networking sites and wrote blogs on her illness. Sympathy poured in from all corners. Some even sent in monetary help to cover her expenses. The saddest part of the incident though was not her cancer; it was the fact that she had faked it! Police investigations revealed her little trick when no evidences or records were found at the hospitals! Apparently, this isn't a unique case;  faking illnesses or malingering is a very common occurrence. All of us have done it at some point in our lives. While we may have done it to escape a school punishment or to take undue advantage of the office 'sick leaves' for personal purposes, it is usually done on a harmless level. But faking illness can be a chronic disorder too and  medical professionals even have a name for it-; Munchausen's Syndrome. People suffering from this syndrome fake illnesses that they don't actually have, to gain sympathy or simply to be the center of attention. Usually gaining sympathy is the main reason why people fake illnesses. It gives them a chance to be in the spotlight. Everyone calls and visits, expresses concern and fusses over them. Lots of love is showered upon them. Another common reason for faking illnesses, is money and at times, the monetary benefits are higher than the emotional ones. No one hesitates to fulfill the last wish of a dying person, however expensive it may be. Often there are mixed motivations and the person faking an illness has many reasons to keep up the pretense of being sick, for as long as possible. Some people really do have a disease — a mental illness known as a factitious disorder. People with this disorder pretend to have an illness, which is usually a terminal one and often go to great lengths to maintain their hoax. Munchausen syndrome by proxy, is another form of faking illness. People with this disorder, fake illnesses of people under their care; and they usually do this, for monetary benefits. Children are the most common victims in this disease. When you tell someone that your child has cancer, you will receive a great amount of sympathy and all the money you want, no questions asked! People with these disorders are extremely cunning. They go to great extents to maintain their lies. They will build grand stories, complain of fake pains and aches, get admitted to hospitals and undergo a battery of tests, numerous times. Interestingly, they never allow and frequently discourage medical professionals, from talking to any of their family members. Since they know they are faking the illness, they will refuse to undergo treatment, for obvious reasons. . If you think a loved one may be exaggerating or faking their health issues, attempt a gentle conversation, voicing your concerns. Avoid anger, judgment or confrontation, while offering support and care and if possible, help them in finding a treatment. Treatment includes empathy, helping in identifying feelings and issues that led to the development of the disorder and finding  alternative healthy ways to deal with those feelings and issues.
Exercise, a healthy way to deal with hypertensionYou have not exercised for a long time. You took it easy when it came to physical activity. Now that you are diagnosed with high blood pressure, you will do anything to control it. Even exercise! Exercise, weight management, and a healthy diet are important ways to help prevent high blood pressure and lower the blood pressure that is already high. Benefits of exercise for people with hypertension include: Improve blood and oxygen circulation in the body Promotes sound sleep Improves stamina and endurance Keeps heart healthy Reduces stress and promotes mental health Exercise enhances the effectiveness of medication So how much should one exercise? An exercise session of atleast 30 minutes per day is important. Get started Start slowly and increase gradually. Start with 10 to 15 minutes of exercise and increase it, as youget comfortable. Choose exercises you enjoy and will do consistently. Avoid sudden vigorous activities; they can cause injuries and hamper the routine. Warm up Warming up helps the body adjust slowly from rest to exercise. A warm-up will reduce stress on the body muscles, increase heart rate and respiratory rate, and body temperature slowly. It will also decrease soreness of muscles. Best exercises for lowering blood pressure Stretching: It is the best. It relaxes and helps prepare the body and muscles for activity and prevents injury and muscle strain. Stretching regularly will make you flexible and improve motility. Aerobic exercise: This helps to improve circulation to the entire body. It improves heart function. It gives maximum benefits to the heart. They also help to reduce heart rate and blood pressure by improving breathing pattern thus lowering blood pressure. Walking, swimming, jogging, and skipping are all aerobic activities. Do aerobics for at least 30 minutes three times a week. Strengthening exercises: These include exercises that have repeated muscle contractions till the muscles are tired. These include side balance crunch, climbing a rope, and push-ups. Join a gym. Here are some  exercise guidelines for a better exercising routine in the gym:  Schedule a fixed time for exercise. Find a buddy to exercise with you. Select an exercise that you like. Make variations to avoid getting bored. Boredom can make you stop exercising. Start slowly and increase gradually, especially if you do not exercise regularly. You should wait for an hour after eating before you exercise. Ten minutes of warm up and ten minutes of cool down sessions are must Keep a record of daily exercise.
21 foods for a healthy heartFollowing is a list of heart-healthy food substances: Garlic: Did you ever think that the commonly available garlic in your kitchen can be heart healthy? It may be smelly for some, but for the heart it is a soothing substance. Garlic is known to control blood pressure, serum triglyceride level & cholesterol level. Carrot: Carrots, though taste sweet, have the ability to control blood sugar levels because of high level of antioxidants in them. So include carrots in your diet, especially in salads. Orange: This juicy fruit has cholesterol-lowering ability because of fibre pectin in it and also helps control blood pressure. Almonds: Though all nuts are believed to be nutritious, almonds are considered to be heart healthy. Almonds are rich in vitamin E, calcium, plant sterols, fibre and antioxidants. Almonds help in lowering LDL cholesterol and reducing risk of diabetes. Walnuts: Walnuts are rich in omega 3 fatty acids, monounsaturated fats which help in lowering cholesterol levels.  Oatmeal: Oats are very healthy & help in lowering the bad LDL cholesterol. You can have one bowl of oatmeal mixed in milk along with nuts as breakfast. Flaxseed: This honey coloured shiny seeds contain substances which are heart healthy, such as lignans, ALA and omega 3 fatty acids. It helps in lowering cholesterol level and controlling diabetes. Tofu: It is a type of soybean protein which can be replaced with paneer. Tofu is rich in fibre and polyunsaturated fats which prevent clogging of arteries.  Barley: The fibre in barley is believed to lower cholesterol and blood glucose levels.  Tuna fish: Tuna fish is rich in omega 3 fatty acids which helps in lowering cholesterol levels.  Salmon: It is very good for heart as it is rich in omega 3, EPA and DHA. It lowers and reduces the risk of inflammation in arteries. It is also believed to maintain the ratio of good cholesterol to bad cholesterol. Red wine: Red wine contains catechins and resveratrol, good for heart health.  Black beans: They are a rich source of magnesium which helps in lowering blood pressure. It also contains folate, antioxidants and fibre which is helpful in controlling blood sugar and cholesterol levels. Fresh herbs: If you are hypertensive and want to control your salt intake then try using fresh herbs as a substitute for salt. It also contains antioxidants which are good for heart. Herbs include rosemary, sage, oregano and thyme. Extra virgin olive oil: This is rich in heart-healthy polyphenols & monounsaturated fats. As it's very costly you can use it as a topping for bread or salad. Sweet potatoes: White potatoes are believed to increase glycemic index so you can replace them with sweet potatoes. It is heart healthy as it has low glycemic index and also contains fibre, vitamin A and lycopene. Low fat yoghurt: You can include this in your breakfast safely as it contains calcium & potassium which helps in lowering blood pressure. Dried cherries: They are rich in anthocyanins and antioxidants which help in neutralizing the action of enzymes which cause plaque formation. In winter you should opt for strawberries, blueberries for a healthy heart. Cayenne chili pepper: Your blood sugar normally increases post a meal. By sprinkling cayenne chili pepper over your food can help preventing insulin level spike post meals. Hot cocoa: Coffee helps in patients with type 2 diabetes. Hot cocoa contains antioxidants helpful for heart. Kosher salt:  This is very beneficial for heart patients as it contains half the amount of sodium as compared to table salt and thus helps in controlling high blood pressure.
Treating sore throatTest and diagnosisPatients with sore throat are examined by ENT specialists. At first, the doctor performs a local examination of throat. Clinical examination usually guides the doctor towards diagnosis. Although in order to confirm the diagnosis, the doctor may ask for culture and sensitivity test of the throat swab. Treatment Home remedies: Mild cases of sore throat are usually cured by home remedies. Following remedial measures can be adopted at home: Warm saline gargle – Gargle with warm saline water helps to relieve the discomfort and irritation of the throat. Half to one teaspoonful of salt is added to one full glass of warm water and the patient is advised to gargle. This process may be repeated 3 to 4 times a day to have a soothing effect on throat. Additionally, smoking and use of other tobacco products must be avoided. The patient must drink adequate amount of fluids. Warm liquid and semi-solid food must be consumed to provide a soothing effect on the throat. Cough lozenges to help relieve irritation and pain in the throat. Seeking advice of the doctor: If the signs and symptoms persist and are not adequately controlled by home remedies, the patient must seek advice of a specialist doctor. Viral infections usually do not require treatment. They are usually cured in 5 to 7 days. Bacterial infections require treatment as per the advice of a specialist doctor. Bacterial infections may require treatment by antibiotics. The treating doctor selects an antibiotic which is suitable for the patient depending on factors such as the age of the patient, report of the culture and sensitivity of throat swab, previous drug history of the patient, etc. Antibiotics usually effective in bacterial infection with sore throat are from the group of penicillins, cephalosporins, and macrolides. PreventionViral and bacterial infections are contagious. Good hygienic lifestyle and habits help prevent infections. Following things to be noted are: Frequent and thorough hand washes before consumption of food, after using toilet, and after sneezing and coughing. Use of a hand sanitizer during consumption of food outside home. Avoid sharing food and drinks from same glasses and utensils. Use a tissue paper or handkerchief while sneezing and coughing. Avoid close contact with patients with sore throat. If sore throat develops, few home remedies may prove to be curative. If sore throat persists, advice of a specialist doctor must be sought.
Winter - When your heart feels the cold too!As per a study in America, 193.6 people of every 10000 people die of a heart disease every year. 53% of the heart attacks occur in the winter months. Heart diseases have a seasonal trend as found by medical research recently. A team of medical researchers recently conducted a survey which saw 10,000 participants between the ages 35 to 80 from around seven European countries. The study was conducted to see if there is any seasonal variation in the presentation of heart diseases. The participants were measured on the parameters of blood pressure, waist circumference, body mass index, blood glucose levels and blood lipid levels. The parameters were later adjusted for sex, age and smoking. The results revealed that the incidence of heart disease shows an upward trend in the winter month [Jan to Feb] as compared to the summer months [June-Aug]. The researchers accept that there is no logical explanation to these findings. A plausible cause being the fact that the eating habits change in winter. One tends to eat more which in turn increases the cholesterol levels leading to heart diseases. Several other theories are being put forth. According to one, during the winter months the body undergoes hormonal imbalance. The day and night variation in the hormone levels, especially that of cortisol varies. This results in a lower threshold for heart attacks. Yet another theory says that the cold temperature tends to constrict the arteries narrowing the blood flow to the heart tissue and this result in a heart attack. On the basis of this study, scientists advise that more attention is to be paid to heart health during the winters.
Stress-free sex: Know your safe period!Having sex is a pleasurable thing; and the nicest way to enjoy it, is to give in without being bogged down by the fears of getting pregnant. Not every act of sexual intercourse will result in pregnancy. There are days when your chances of conception are very high, just like there are days when the chances of getting pregnant are almost nil. Identifying these days will help you enjoy a better and a more stressfree sex life! A woman's menstrual cycle starts from the first day of  bleeding and ends about 28 days after that, on an average. Ovulation occurs on the 14 day of the menstrual cycle. The 14th day is the ideal day, theoretically. Since every woman's menstrual cycle differs, the day of the ovulation also differs. Hence doctors calculate the fertile period from the 12th to the 18th day of the menstrual cycle. This is the period when the chances of ovulating and hence getting pregnant, are optimal. The 1st to the 7th day and the 19th day to the start of the next cycle, are the days when the ovulation chances are very low. This means if you make love during these days, there are very little chances of you getting pregnant. This is the case with women who have regular period cycles. In case your cycles are not regular, then you would need to do a bit of math to calculate your safe period. For example, if your shortest cycle is of 26 days and the longest cycle has been of 31 days, then: 26-18= 8 and 31-10=21, which means the 8th to the 21st day of your cycle, are the most fertile days. The 1st to the 7th day and then the 21st day to the start of your next cycle, are the days that are safe for you to enjoy sex, without fear of getting pregnant. Opting to have sex during the 'safe period', isn't always fool-proof though. A lot of women have irregular cycles and the cycle length can vary from woman to woman; which is why the so-called 'safe period', is in truth, not 100% safe. It is always better to use condoms or other contraceptive methods like the oral pill to prevent unwanted pregnancies.
Busting misconceptions about homosexualityIn the past few years, homosexuality has become a subject of public discourse in India. Thanks to gay pride marches and the Delhi High Court's historic ruling decriminalizing same-sex intercourse in 2009, more people today are willing to accept homosexuality as normal. However, there are still a large number of people who are still confused about whether homosexuality is normal. Homosexuals are people who get attracted to people of the same gender. Gay is a term used for both male and female homosexuals, but some prefer the term 'lesbian' when it comes to women homosexuals. Some misinformed people consider homosexuality as a purely decadent western phenomenon which is far from the truth. Homosexuality finds its place in recorded history throughout the world. So is homosexuality abnormal? A few decades ago a gay person would have ended up on a psychiatrist's couch where attempts would have been made to re-orient him/her towards the heterosexuality. However, as the American Psychology Association notes, "No, lesbian, gay, and bisexual orientations are not disorders. Research has found no inherent association between any of these sexual orientations and psychopathology. Both heterosexual behavior and homosexual behavior are normal aspects of human sexuality." Some scientists are trying to find a genetic link to homosexuality. Results so far have not established a definite link. A whole lot of factors could play a role in deciding sexual orientation - genetic, hormonal, developmental, social, and cultural. One cannot safely conclude that being "gay" is in one's genes and is therefore, hereditary. Legalizing gay marriages Same-sex marriage is legally recognized in several jurisdictions within the United States. As of April 2013, nine states—Connecticut, Iowa, Maine, Maryland, Massachusetts, New Hampshire, New York, Vermont, and Washington—as well as the District of Columbia and three Native American tribes[1]—have legalized same-sex marriage, representing 15.7% of the US population.
FAQS
T&C FAQS