THE CAUSES OF OBESITY

NO 4......

Genes and Family History?????

Studies of identical twins who have been raised apart show that genes have a strong influence on a person's weight. 


Overweight and obesity tend to run in families. 


Your chances of being overweight are greater if one or both of your parents are overweight or obese.


Your genes also may affect the amount of fat you store in your body and where on your body you carry the extra fat. 


Because families also share food and physical activity habits, a link exists between genes and the environment.


Children adopt the habits of their parents. 


A child who has overweight parents who eat high-calorie foods and are inactive will likely become overweight too. 

NO 5.....

Health Conditions????

Some hormone problems may cause overweight and obesity, such as underactive thyroid (hypothyroidism), Cushing's syndrome, and polycystic ovarian syndrome (PCOS).


Underactive thyroid is a condition in which the thyroid gland doesn't make enough thyroid hormone. 


Lack of thyroid hormone will slow down your metabolism and cause weight gain. You'll also feel tired and weak.


Cushing's syndrome is a condition in which the body's adrenal glands make too much of the hormone cortisol. 


Cushing's syndrome also can develop if a person takes high doses of certain medicines, such as prednisone, for long periods.


People who have Cushing's syndrome gain weight, have upper-body obesity, a rounded face, fat around the neck, and thin arms and legs.


PCOS is a condition that affects about 5–10 percent of women of childbearing age. 


Women who have PCOS often are obese, have excess hair growth, and have reproductive problems and other health issues due to high levels of hormones called androgens. 

NO 6....

Lack of Sleep?????

Studies find that the less people sleep, the more likely they are to be overweight or obese.

 People who report sleeping 5 hours a night, for example, are much more likely to become obese compared with people who sleep 7–8 hours a night.


People who sleep fewer hours also seem to prefer eating foods that are higher in calories and carbohydrates, which can lead to overeating, weight gain, and obesity over time.

Hormones that are released during sleep control appetite and the body's use of energy. For example, insulin controls the rise and fall of blood sugar levels during sleep.

People who don't get enough sleep have insulin and blood sugar levels that are similar to those in people who are likely to have diabetes.

Also, people who don't get enough sleep regularly seem to have high levels of a hormone called ghrelin (which causes hunger) and low levels of a hormone called leptin (which normally helps curb hunger).