The most common cause of fatty liver disease in America is obesity. Whereas several decades ago obesity was not very common, according to current statistics more than 68% of Americans are overweight.
It is estimated that 75% of obese individuals are at risk of developing a simple fatty liver.
Up to 43% of obese individuals are at risk of developing fatty liver with inflammation
Besides obesity, nutritional causes of fatty liver disease are :
starvation and protein malnutrition,
long term utilize of total parenteral nutrition(a feeding procedure that involves infusing nutrients directly into the blood stream),
intestinal bypass surgery for obesity,
rapid weight loss.
Certain conditions often accompany and may contribute to fatty liver disease :
hyperlipidemia( elevated lipids in the blood ),
insulin resistance and high blood pressure.
Other causes include :
drugs and chemicals such as alcohol,
corticosteroids, tetracycline and carbon tetrachloride.