Thickened blood should not eat fat-rich foods, foods with high sugar content, and diuretics such as hydrochlorothiazide. 1. Thickening of blood is caused by high blood lipid levels, and the daily fat intake and cholesterol intake of such patients should be reduced. So it is not recommended to eat lipid-rich foods such as cream, fatty meat, pork liver, pork heart, pork kidney, fritters, nuts and other foods. 2. Glucose, protein and fat in the body there is energy conversion, after eating a lot of carbohydrates, the body cells can not consume too much sugar, and thus converted to adipose tissue storage. So people with thick blood can not eat more desserts, cakes, candies and other foods with high sugar content. 3. Hydrochlorothiazide, indapamide and other diuretic drugs may lead to a relative increase in blood cholesterol concentration after taking, resulting in more viscous blood. Pay attention to the use of medication under the guidance of a physician.