Wednesday, 31 August 2011

Pregnant women like eating raw mangoes and tamarind. .

Craving for unusual food is considered as the first sign of pregnancy. In reality, although some women do get strong cravings, many do not. No one knows for sure what causes food cravings. Many women find that their senses of taste and smell are changed by pregnancy. For example, some women experience an odd metallic taste in their mouths very early in pregnancy (may be the first sign of pregnancy for an ‘experienced’ mother); others find that taste and smell are dulled. It is possible that these changes affect food likes and dislikes. Some people think that cravings happen in response to temporary deficiency of specific nutrients.

There is probably some truth in this, but it is not the whole story. We only need minute quantities of each vitamin and mineral-certainly not enough to justify a continual craving for just one food. for some women, food cravings may be a conscious or subconscious response to emotion. They may crave a favourite childhood food, or a food that is of special significance to their religion or culture. Cravings for unusual food may also be a private way of marking the special state of being pregnant. Rather than develop a food craving, many women find they suddenly go off certain foods or drinks like fried foods and coffee.

This is often related to pregnancy sickness, but may also be the body’s way of ensuring that they eat and drink wisely. Generally, there’s no harm in giving into food cravings, especially if doing so helps getting through phases like early morning sickness which can be pretty distressing. However this must be done in moderation. Eating a lot of one food only means eating less of other foods and therefore running the risk of becoming deficient in important nutrient. A craving for non-food item-such as ash or soap or toothpaste-is known as ‘pica’. Pica is potentially very harmful if indulged in and must be resisted. Also, substances like soaps and ash may prevent the absorption of nutrients and other food substances.

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Monday, 29 August 2011

Human papilloma virus

The viruses that contain DNA as their genetic material and can induce tumors are called DNA-tumor viruses. They are placed under Papova virus group. Papilloma virus is one type of Papova virus. They cause papillomas or warts of cutaneous and mucosal epithellia in human and other animals, therefore they are called Papilloma viruses. They are nearly 60 sub-types in the warts caused due to human papilloma virus. Transmission is by contact with virus either in living skin or in fragments of shed skin. Genital warts frequently spread by intercourse and perianal warts may reflect homosexual activity. There appears to be a close, if not causative, relationship with genital warts, especially due to HPV type 16 and 18 and carcinoma of the cervix. Nearly 80 per cent of cases with cervical carcinoma harbour one of these viruses. Cervical carcinoma is most common among women with several sexual partners. It is suspected that penile cancer is also due to these types of papilloma viruses.

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