1. People who are deficient in calcium, iron and other elements

Because whole grains contain phytic acid and dietary fiber, they will combine to form precipitation, hindering the body's absorption of minerals.

2. People suffering from digestive system diseases

If you suffer from liver cirrhosis, esophageal varices or gastric ulcer, eating a large amount of whole grains can easily cause venous rupture and bleeding and ulcer bleeding.

3. People with low immunity

If the long-term daily intake of fiber exceeds 50 grams, the person's protein supplementation will be blocked, fat utilization will be reduced, resulting in bone, heart and , blood and other organ function damage, reducing the body's immunity.

4. People with heavy physical activity

Coarse grains have low nutritional value and low energy supply, which is insufficient nutrition for people engaged in heavy physical labor.

5. Adolescents during the growth and development period

Due to the special needs for nutrients and energy for growth and development as well as the physiological requirements for hormone levels, whole grains not only hinder the absorption of cholesterol and its conversion into hormones, but also Impedes the absorption and utilization of nutrients.

6. The elderly and children

Because the digestive function of the elderly is reduced and the digestive function of children is not yet perfect, digesting a large amount of dietary fiber is a great burden on the gastrointestinal tract. Moreover, the absorption and utilization rate of nutrients is relatively low, which is not conducive to the growth and development of children.

7. People with poor gastrointestinal function

For people with weak gastrointestinal function, eating too much dietary fiber will put a great burden on the gastrointestinal tract.

People's Daily Online - You should not eat corn, steamed buns and sweet potatoes in the morning. 7 types of people are not suitable for eating whole grains