Whole grains can prevent diseases, but they are relatively coarse and not easily digested, so they are not suitable for everyone. Below, the editor introduces 7 types of people who are not suitable for eating whole grains to help you avoid the pitfalls of a healthy diet.
The refinement and elaboration of modern life have become the causes of many nutritional diseases. Diabetes, gout, high blood pressure, colon tumors, obesity, etc., are gradually threatening human health.
"Whole grains" refer to grains that are relatively less processed and refined compared to regular, fine grains. They mainly include coarse grains like corn, millet, purple rice, sorghum, oats, buckwheat, wheat bran, and various dried beans such as soybeans, green beans, red beans, and mung beans. It is undeniable that advocating for the moderate consumption of whole grains can help prevent diseases.
This is because dietary fiber can inhibit the absorption of cholesterol, reduce high blood lipids, promote intestinal peristalsis, and prevent constipation. B vitamins, especially vitamin B1, can prevent beriberi. At the same time, many whole grains also have medicinal value. For example, buckwheat contains "chlorophyll" and "rutin" not found in other grains, which can help treat high blood pressure.
However, excessive intake of whole grains can also be detrimental to health. Firstly, whole grains themselves are not high in nutritional value and are difficult to digest, resulting in low absorption rates. Secondly, the dietary fiber in whole grains can affect the body's absorption of nutrients like calcium and iron. Although whole grains are beneficial, they are not suitable for all populations, and people with certain special constitutions should not eat them frequently.
1. People with poor gastrointestinal function
For people with weak gastrointestinal function, consuming too much dietary fiber is a significant burden on the digestive system.
2. People deficient in elements like calcium and iron
Because whole grains contain phytic acid and dietary fiber, they can form precipitates that hinder the body's absorption of minerals.
3. People with digestive system diseases
For those with liver cirrhosis, esophageal varices, or stomach ulcers, consuming large amounts of whole grains can easily cause variceal rupture and bleeding, or ulcer bleeding.
4. People with low immunity
If the daily intake of dietary fiber exceeds 50 grams for a long time, it can impede protein replenishment, reduce fat utilization, and cause damage to the functions of organs like bones, the heart, and blood, thereby lowering the body's immune capacity.
5. People engaged in strenuous physical activity
Whole grains are low in nutritional value and provide little energy, which is insufficient for people engaged in heavy manual labor.
6. Adolescents in their growth and development period
Due to the special nutritional and energy demands of growth and development, as well as physiological requirements for hormone levels, whole grains not only hinder the absorption of cholesterol and its conversion into hormones but also interfere with the absorption and utilization of nutrients.
7. The elderly and children
Because the digestive function of the elderly declines and the digestive function of children is not yet fully developed, digesting large amounts of dietary fiber is a significant burden on the gastrointestinal system. Moreover, the absorption and utilization of nutrients are relatively low, which is not conducive to the growth and development of children.
Nutritionists point out that it is necessary to eat whole grains, but one must pay attention to a balance of coarse and fine grains, and pair them with nutritious foods. For example, cook whole grains into porridge or mix them with fine grains, and pair them with protein- and mineral-rich foods to aid absorption. At the same time, people who are not suitable for eating large amounts of whole grains should minimize their consumption to avoid malnutrition.