Obesity and Weight Gain is a growing problem nowadays. It becomes a complex disease involving an excessive amount of body fat. 

It also increases the risk of other diseases and health problems too. Such as heart disease, diabetes, high blood pressure, and certain cancers.

In the United States, about 42% of adults are now thought to be obese, but there is no simple explanation for this.

A person's weight is influenced by a variety of factors, including genetics, muscle mass, food, exercise habits, and environmental factors.

But a recent study found that air pollution, an unexpected factor, influences women's weight.

The study found that the more air pollution women were exposed to, the greater their risk of developing obesity. 

Middle aged women who live in areas with high levels of air pollution have a greater risk of developing obesity.

It is very important to make sure that an individual eats healthy and exercises regularly in order to maintain a healthy weight.