1. Helps reduce blood sugar: black buckwheat is rich in dietary fiber and insulin sensitizing substances, can help reduce blood sugar, diabetic patients have a certain auxiliary therapeutic effect.

2. Protect the heart: black buckwheat is rich in a variety of nutrients and antioxidants, can reduce the risk of cardiovascular disease, and help reduce blood lipids and blood pressure.

3. Improve digestive problems: black buckwheat in the dietary fiber can promote gastrointestinal peristalsis, improve constipation and other digestive problems, and help to lose weight.

4. Provide protein: black buckwheat is rich in high-quality protein, is a good supplement for vegetarians and anemic patients.

However, black buckwheat also has some contraindications to pay attention to:

1. Allergy should not be eaten: black buckwheat belongs to the grass plants, may cause allergic reactions, so allergic people should be careful to eat or avoid eating.

2. Black buckwheat contains oxalic acid, excessive intake may lead to oxalate poisoning, kidney damage, so should not be consumed in large quantities.

3. Children and pregnant women should not be consumed: black buckwheat contains high levels of oxalic acid, children and pregnant women's health is not favorable, should not be consumed.