Insulin is very essential in sugar metabolism. In some cases, if the sex hormones secreted by the ovaries in females are deficient during menopause, obesity results. Administering hormones further adds to the bulk. So is the case after hysterectomy in some women. But most of us are unaware of an equally serious addiction that is addiction to food.
Different people are addicted to some food items.
Individually those foods as an addiction, to any one of these, may be harmless without visible discomfort. If abstained from, or lesser quantity of particular type of food is taken, one may feel some sort of all gone sensation in the stomach or suffer other withdrawal symptoms. But once they are introduced again, the withdrawals may disappear. As in any other addiction, the more one eats, the more the food is relished. The craving for eating keeps increasing day by day.