Obesity is a complex disorder involving an excessive amount of body fat. Obesity isn't just a cosmetic concern. It increases your risk of diseases and health problems, such as heart disease, diabetes and high blood pressure.
Being extremely obese means you are especially likely to have health problems related to your weight. Obesity is defined as having a body mass index (BMI) of 30 or more. BMI is a calculation that takes a person’s weight and height into account. However, BMI does have some limitations.
High triglycerides and low high-density lipoprotein (HDL) cholesterol
Type 2 diabetes
High blood pressure
Metabolic syndrome — a combination of high blood sugar, high blood pressure, high triglycerides and low HDL cholesterol
Cancer, including cancer of the uterus, cervix, endometrium, ovaries, breast, colon, rectum, esophagus, liver, gallbladder, pancreas, kidney and prostate
Breathing disorders, including sleep apnea, a potentially serious sleep disorder in which breathing repeatedly stops and starts
Gynecological problems, such as infertility and irregular periods
Erectile dysfunction and sexual health issues
Nonalcoholic fatty liver disease, a condition in which fat builds up in the liver and can cause inflammation or scarring