How does it help in improving chances of pregnancy?

Obesity is a condition where there is a excess body fat resulting in a much higher ideal body weight

The commonly use measure of obesity is the body mass index or BMI. The normal BMI for an Indian Adult is 23-25, is the BMI is up to 30 the person is overweight. If BMI is above 30 then it is obesity.

What effect does increase fat accumulation have on the body?

Excess body fat has negative effects on all organ systems, including the reproductive system. The reproductive system both in the male and female are well controlled by various hormones. The Hypothalamus, Pituitary and the end organs ovaries in the female and testis in the male communicate with each other and maintain a balance to provide an optimal status to facilitate reproduction.

This delicate balance is disturbed due to excess fat in the body. Normal metabolic process is disturbed leading to either excess or reduction of the hormones. This seriously affects the reproductive potential of the individual.

Fortunately these disturbances are reversible with weight loss.

Estrogen is the female hormone and testosterone is the male hormone. Due to metabolic disturbances as a result of excess fat, the levels get altered this can cause reduced sexual drive in male and poor development of eggs in female. Facial hair, acne and poly cystic ovaries are commonly seen in these women and associated with infertility.

 Resistance of insulin is another important feature of sever obesity. Insulin plays a very important role in the release of the egg from the ovary. Insulin resistance therefore interferes with egg release, again leading to infertility. Weightloss plays a very important role in improving the chances of pregnancy. This is true, whether it is an attempt for natural conception or through any method of assisted reproduction.