1. Excessive fat and saturated fat in the diet. The biggest risk factor found in a study of patients who had fatty liver was the consumption of saturated fat and cholesterol. Those patients were more likely to be insulin resistant and this was more likely to lead to inflammation in the liver along with excess fat in the liver. Their diets were also very low in vitamin C, suggesting that their daily intake of fruits and vegetables was relatively low. A recent study done in guinea pigs showed that for those animals, dietary fat alone was the cause of the fatty liver.
2. Not enough fruits and vegetables. Getting enough vitamin E from your foods is a key to reducing the inflammation in the liver and allowing this to be disposed. If you have a fatty liver, this stresses the liver cells themselves. The vitamin E found in food helps to dramatically reduce the level of inflammation and has even been shown to reduce the liver enzyme levels on blood tests. Vitamin E from supplements does not seem to work this way.