1. Cassia seeds, red sweet plums and hawthorn slices soaked in water and drunk can improve eyesight and lower blood pressure; cassia seeds can be drunk for a long time at 3-5 grams per day, but not too much. 2. Using dried hawthorn slices soaked in water as tea can lower blood lipids, but some people develop stomach problems after drinking hawthorn tea for a period of time before their blood lipids drop. How to drink hawthorn tea to lower blood lipids without hurting the stomach? Experts point out that the first function of hawthorn is digestion. There has been a tradition among the people that hawthorn is used to eliminate food accumulation and promote digestion.