Flaxseed powder for the seeds of flax processed from food, long-term drinking flaxseed powder may lead to indigestion and other abnormalities in gastrointestinal absorption function. In addition, some of the components of flaxseed powder on the cardiovascular system, hormone levels and other side effects, so it is not recommended to drink a large number of long-term. 1, affect the digestive system: flaxseed powder is rich in dietary fiber, long-term large amounts of drink will increase the burden on the gastrointestinal tract, patients can appear bloating, constipation, diarrhea and other symptoms; 2, affect the cardiovascular system: flaxseed powder in the raw cyanogenic glycosides and counteract the role of vitamin B6, etc. If the level of vitamin B6 decreases, the patient’s risk of cardiovascular disease will increase; and flaxseed powder also contains unsaturated fatty acids and other components, has a certain anticoagulant effect, so patients with coagulation problems or taking anticoagulant drugs should be professional consultation before deciding whether to eat flaxseed powder; 3, poisoning: raw flaxseed powder in the raw cyanogenic glycosides can be decomposed in the human body into cyanide, and Cyanide is a toxic component, a large number of eaten in the body will accumulate too much, there is a risk of poisoning; cooked flaxseed powder, although the content of raw cyanogenic glycosides greatly reduced, but long-term overdose will still have a certain risk of poisoning, so drink flaxseed powder is recommended to choose qualified products cooked to drink, do not drink a lot; 4, other side effects: flaxseed powder is a high energy density food, so long-term use may lead to obesity.