Q How does umbilical cord work?

During the prenatal life umbilical cord is the connection between the foetus and placenta. It consist of two umbilical arteries and one umbilical vein. The vein does the function of carrying oxygenated and nutrients rich blood form the placenta to the foetus. The two arteries do the work of carrying deoxygenated and nutrient depleted blood from the foetus back to the placenta.

Q What do you mean by Social Phobia? How it is expressed?

Social phobia is a strong fear of being judged by others, and of being embarrassed. This fear can be so strong that person start worrying about the things he is going to do in front of others weeks before, or it may restrict him from going into public places/school/work etc. Person will have overwhelmed fear that others will judge him wrongly or make fun of him. He might be afraid of eating or drinking in front of others, using public restrooms, going in social functions, performing anything in front of a crowd etc. This may end up with staying away from such situations or completely avoiding them. For some, it is a problem only in few situations, but some may have this fear constantly. This fear can express itself in the form of difficulty in getting acknowledged with others, talking with other people, high level of self-consciousness when in public, worries excessively before weeks or days of any upcoming social function, difficulties in making friends and becoming friendly with others, physical symptoms of fear may appear like sweating, trembling, blushing, palpitations, nausea, etc.

Q What are the incubation periods for infections?

Incubation period is the time between exposure to an infectious disease and the appearance of the first signs or symptoms of the same. Different infections have different incubation period.

Q When is herpes contagious? I have not had an outbreak of genital herpes in years but i do take valtrex if i feel an outbreak may be coming on. If i take valtrex as needed and i do not have an outbreak, am i still contagious?

Genital herpes is the most contagious when the lesions are active and a few days before that. However, an infected person can potentially be shedding the virus all his life. Since, the virus is spread by direct skin to skin contact, it is very easy to spread it through intercourse or oral sex. Thus, protect your partner by always using a condom.

Q How fast are calories absorbed?

The calories absorption depends on the physical and mental well being of the person. It also depends on the age, sex, occupation, environmental factors etc. It varies from person to person. Some one doing heavy physical work spend the calories early than other one who does relax work in the office.

Q Need help related to phimosis

Treatment of phimosis are of two types surgical and non-surgical. The choice of treatment will depend upon the acuteness and severity of the problem. Consult an urologist to decide what is best for you.

Q what are the symptoms of dyspesia and how it is diagnosed?

Dyspepsia is also known as indigestion. It is a condition in which the digestion is disturbed either due to any lifestyle or dietary change or some underlying pathology. It is a medical condition characterized by chronic or recurrent pain in the upper abdomen, upper abdominal fullness and feeling fullness in the stomach even with small amount of food. It may be associated with nausea, vomiting, bloating, belching, heartburn etc. It is a common condition in many people and generally do not require any treatment. If it is experienced for prolong time, it is advised to visit your physician to rule out the cause and get the best possible treatment.

Q how to do anal sex? does it creat any problem?

Anal sex is practiced by many heterosexuals, as well as homosexual couples. The anal area has many erotic nerve endings in both men and women. Because of this, many couples (heterosexual or homosexual) can derive pleasure from some form of bottom stimulation. Anal sex should be avoided by couples in which one of the partners has been diagnosed with an STI until the treatment has proven to be effective. In order to make anal sex safer, the couple must ensure that the anal area is clean and the bowel empty and the partner on whom anal penetration occurs should be able to relax. Regardless of whether anal penetration occurs by using a finger or the penis, the condom is the best barrier method to prevent transmission of STI. Since the rectum can be easily damaged, the use of lubricants is highly recommended even when penetration occurs by using the finger. Especially for beginners, using a condom on the finger is both a protection measure against STI and a lubricant source. Most condoms are lubricated and they allow less painful and easier penetration. Anal stimulation with a sex toy requires similar safety measures to anal penetration with a penis, in this case using a condom on the sex toy in a similar way. It is important that the man washes and cleans his penis after anal intercourse if he intends to penetrate the vagina. Bacteria from the rectum are easily transferred to the vagina, which may cause vaginal infections. When anal-oral cos ntact occurs, protection is required since this is a risky sexual behavior in which illnesses as Hepatitis A or STIs can be easily transmitted, as well as enteric infections. The dental dam or the plastic wrap[citation needed] are effective protection means whenever anilingus is performed. Anal sex has a number of health risks. Anal intercourse is the riskiest form of sexual activity for several reasons, including the following: The anus lacks the natural lubrication the vagina has. Penetration can tear the tissue inside the anus, allowing bacteria and viruses to enter the bloodstream. This can result in the spread of sexually transmitted infections including HIV. Exposure to the human papillomavirus (HPV) may also lead to the development of anal warts and anal cancer. Using lubricants can help some, but doesnt completely prevent tearing. The tissue inside the anus is not as well protected as the skin outside theanus. Our external tissue has layers of dead cells that serve as a protective barrier against infection. The tissue inside the anus does not have this natural protection, which leaves it vulnerable to tearing and the spread of infection. The anus was designed to hold in feces. Repetitive anal sex may lead to weakening of the anal sphincter, making it difficult to hold in feces until you can get to the toilet. The anus is full of bacteria. Even if both partners do not have a sexually-transmitted infection or disease, bacteria normally in the anus can potentially infect the giving partner. Practicing vaginal sex after anal sex can also lead to vaginal and urinary tract infections.

Q Does stress affect lutenizing hormone?

Stress such as excessive physical or metabolic stress causes release of corticotropin releasing hormone. This hormone inhibits the release of gonadotropin releasing hormone. Suppression of gondotropin releasing hormone causes reduce levels of leutenizing hormone and follicle stimulating hormone in women.

Q 22 year girl have white discharge continuously. How we can prevent it? In last 3 months, she has lost more than 10 kg weight.

Some amount of vaginal discharge is normal and is seen in most females. It is the response of body to maintain internal hygiene. However if the discharge is constant, foul smelling, causes itching, is blood stained then it is a matter to worry. Bacterial, fungal and parasitic infection of the vaginal area are common causes. It is necessary that you get yourself examined by a gynecologist. Try and maintain hygiene in the genital area. Wear loose cotton under garments. Stay well hydrated. Avoid douching and using deodorant pads and tampons.