DSHEA defines its composition and marking requirements as a definition of dietary supplements: product forms can make pills, capsules, tablets or liquids; products can not replace ordinary food or the only variety of meals. The product is identified as a "dietary supplement".
Lack of nutrients can lead to many diseases
According to the Report on Nutrition and Chronic Diseases of Chinese Residents (2015), the calcium, vitamin A and vitamin D intake of urban and rural residents in China is generally insufficient. Calcium deficiency can cause various kinds of bone diseases; vitamin A intake will affect visual health; vitamin D deficiency will affect calcium absorption. Recent results show that vitamin D deficiency is associated with common chronic diseases such as diabetes and hypertension. In addition, B vitamins and omega 3 fatty acids are also generally intaken in our country.
The lack of nutrients showed significant regional differences, such as the iodine deficiency in the coastal areas, and the insufficient intake of iodine in the inland areas, the severe selenium deficiency in Heilongjiang Keshan region, and the high incidence of selenium poisoning in some areas in Enshi, Hubei.
The reasons for the lack of certain micronutrients in Chinese
Vitamin B deficiency is related to Chinese preference for white rice noodles. Most of B vitamins exist in the epidermis of grains, but they are removed in the process of finishing. Omega-3 fatty acids are abundant in marine fish, but the intake of inland marine products is relatively small and generally insufficient.
It is important to note that there are also some excess nutrients, such as sodium, the general eating of salt in the country, the recommendation of 5 grams of salt far beyond the WHO, which leads to the excessive intake of sodium and increases the risk of a variety of cardiovascular diseases.
Supplemental nutrients vary from person to person
The intake of compound nutrients should be analyzed according to the health condition of the population. For some micronutrients, higher intake has a positive effect on health, such as vitamin D supplementation in the elderly; vegetarians generally lack vitamin B12 and omega 3 fatty acids, and appropriate supplement is important. Mineral supplements have positive effects on health.
What nutritional supplements should be emphasized in patients with osteoporosis, type 2 diabetes, hypertension and other chronic diseases?
When it comes to osteoporosis, everyone knows that calcium supplements are needed, but large, single calcium supplements can cause dry stools and increase the risk of cerebral hemorrhage in the elderly when they go to the toilet. In fact, calcium supplementation plus magnesium is better than calcium supplementation alone, and vitamin D supplementation can promote calcium absorption. Type 2 diabetes mellitus is a metabolic disease. Omega-3 fatty acids and vitamin D have been shown to have a positive effect on type 2 diabetes in China. Chromium in sugar and lipid metabolism can help enhance the role of insulin.
In addition to supplement nutrients, diet, exercise and treatment are three indispensable. The high incidence of hypertension in China is related to public preference for traditional eating habits such as pickled vegetables and salted fish. Therefore, the balance of sodium ions in the body, in addition to reducing sodium intake, should also increase the intake of potassium.
How should ordinary people take vitamin and mineral supplements?
Because vitamin and mineral deficiency can cause sub health and chronic diseases, supplements can improve sub-health and prevent chronic diseases. As long as the amount of supplement is equal to the recommended intake, it is not more than the upper limit of tolerance, and it is safe for people of different ages, sexes and different lifestyles.