Nonalcoholic fatty liver disease (NAFLD) is a chronic liver condition that occurs when fat builds up in the liver, and is the most common cause of liver disease in the United States. It is estimated that 30-40% of American adults have some degree of fatty liver disease, and the rates are increasing.
The primary cause of NAFLD is obesity and metabolic syndrome, which is characterized by a combination of high levels of triglycerides, low levels of high-density lipoprotein (HDL) cholesterol, high blood pressure, and insulin resistance. This combination of conditions leads to an accumulation of fat in the liver, which can eventually lead to scarring and inflammation. Other risk factors include diabetes, high cholesterol, and high triglycerides.
In addition to obesity and metabolic syndrome, certain lifestyle factors can also contribute to the development of NAFLD. These include a diet high in sugar and processed foods, sedentary lifestyle, smoking, and excessive alcohol consumption. The risk of developing NAFLD increases with age, and those with family members who have the condition are also more likely to develop it.
No matter the cause, it is important to seek medical advice if you are at risk for NAFLD, as early diagnosis and treatment can help to prevent serious health complications.