Causes of Weight Gain and Obesity

Obesity is one of the biggest health problems in the world.


Some people appear to be genetically susceptible to weight gain and obesity.

Engineered Junk Foods

Stores are filled with processed foods that are hard to resist. These products also promote overeating.


High insulin levels and insulin resistance are linked to the development of obesity.

Leptin Resistance

Leptin, an appetite-reducing hormone, doesn’t work in many individuals who have obesity.

Food Availability

Sometimes finding fresh, whole foods may be difficult or expensive, leaving people no choice but to buy unhealthy junk foods.


Excessive sugar intake may be one of the main causes of obesity.

Food Addiction

This especially applies to sugar-sweetened, high-fat junk foods which stimulate the reward centers in the brain.