Who is most short of vitamins? 3 mysteries about vitamin supplementation

10
10
, the Chinese Nutrition Society has officially released the latest edition of the Dietary Nutrient Reference Intake of Chinese Residents. In fact, there are many problems in nutrient intake that deserve attention. As the pace of life becomes faster and faster, many people face sub-health distress, so some "shortcuts" have come into being, such as eating vitamins."eating vitamins is equal to eating fruits, vegetables" "filling up vitamins is always no harm" and other views in the population. More people think that vitamin supplementation can prevent and cure diseases, adhere to the daily on-time take, in order to achieve good health. Do we use extra vitamin supplements to ensure a normal diet? What are the precautions for taking vitamins? "Request for proof" column reporter interviewed the relevant experts.vitamin deficiency prevalent?The average person will not be deficient in vitamins, usually only a few types of special groups of people need to follow medical advice to supplementvitamins are necessary to maintain normal physiological function of a class of trace organic substances, if long-term lack of a certain vitamin will cause physiological dysfunction and a disease. But does that mean everyone needs to add?"People prefer to have a reasonable dietary structure, and if you follow a normal diet of 'dietary pagodas', you generally do not need additional vitamin supplements." "And taking vitamin tablets is no substitute for eating natural foods rich in vitamins, " said Wang Donglan, an associate professor in the Nutrition Research Office at the Academy of Military Medical Sciences. Lideputy director of nutrition at Xuanwu Hospital of the Capital Medical University, said that from the current standard of living, there is no vitamin deficiency in the general population. And only when the body lacks a certain vitamin, only need discretionary supplementation, avoid blindness.", in addition to those who have been diagnosed with vitamin deficiency, there are three categories of people who need vitamin supplementation. Ma Guansheng, vice president of the Chinese Nutrition Society and deputy director of the Nutrition and Food Safety Institute of the China Center for Disease Control and Prevention, said: First, people who eat less, such as partial food or lose weight, second, those who need large amounts, such as pregnant women, adolescents, and third, people with poor digestion and absorption, such as the elderly, people with gastrointestinal diseases and special disease groups. In addition to these specific groups of people, long-term irregular diet, can not guarantee three meals a day, often in a special working state, such as always sitting in front of the computer, highly nervous, frequent aircraft, or year-old people working in high temperature, cold environment, people with bad habits such as smoking, drinking, staying up late, etc., can consider taking vitamins appropriately., you need to have a basic understanding of the various types of vitamins before taking them. Professor Cheng Yiyong, former president of the Chinese Nutrition Society, said the effects and symptoms of vitamin deficiency are different. At the same time, it is necessary to observe their own changes, targeted supplement. Chen Xiafei, chief nutritionist at East China Hospital affiliated with Fudan University in Shanghai, also said.Li wei reminded, want to know what vitamins they are missing, it is recommended to go to the hospital nutrition clinic for evaluation, access to nutritionist analysis and advice, but also through laboratory examination analysis and measurement.vitamins prevent and cure disease?There is limited evidence for vitamin disease prevention research and is not a substitute for doctors and drugswho have common minor problems and don't go to the doctor, but go to a pharmacy to buy vitamins - an unscientific practice, experts say.Chen Xiafei said: e.g. mouth ulcers, many people think it is caused by 'fire', once the ulcer appears, eat light food, fruit, and vitamin
C
treatment, in fact, this is not necessarily effective." Strictly speaking, there are
100
of diseases with clinical symptoms of mouth ulcers. In order to cure ulcers, we must first find out the root cause. ", how credible is the claim that vitamins can prevent disease?" Chen Xiafei said there was limited evidence for the study. "Taking vitamin
C
as an example, the current buzzword is that 'oral vitamin
C
can prevent and treat colds', but these are in-body studies or conclusions based on a lack of vitamin
C
in the body. For the vast majority of
vitamins
not lack of C, there is no clear scientific basis. WangXingguo, director of nutrition at Dalian City Center Hospital in Liaoning Province, also said that long-term moderate vitamin supplementation can help the body achieve balance and help replenish physical strength, boost energy and enhance resistance. However, the role of vitamins mainly lies in the supplement diet intake is insufficient, not to eat can achieve the effect of disease prevention." is currently overblown about the effectiveness of vitamins. Li said, for example, antioxidant foods have anti-cancer effects, not just vitamin
A
or vitamin

effect. If the body has problems or should seek medical treatment, can not listen to exaggerated statements, blind choice and consumption."It should be noted that vitamins are divided into medicinal vitamins and health care products. Cheng Yiyong said, "Medicinal vitamins, as medicines, usually contain some other chemicals besides vitamins." Vitamins in the health care category are mainly supplemented, maintained and health care. In general, vitamins used as nutritional supplements are processed from food, vegetables, fruits, etc. consumed as a beneficial supplement to undernourishment in the diet. We should consider the difference between the two factors and choose the product that suits you. " it harmful to take too many vitamins?"Response The body has the maximum tolerance to vitamins, excessive can cause anorexia, fatigue, etc. , especially to be wary of taking excessive fat-soluble vitamins Wang Donglan said "Vitamin supplementation first of all to understand the maximum intake of vitamin supplementation in the human body, which can be considered as the upper limit, if exceeded there will be side effects." Chenalso warned: "Vitamins are micronutrients, if excessive, the problem will be greater." It is not necessary to deliberately add vitamins to cause abuse. "" vitamin supplementation, but also to the vitamin is divided into water-soluble vitamins and fat-soluble vitamins to understand. Cheng Yiyong said, "The molecular structure of water-soluble vitamins is hydro-hydrotic and soluble in water." When they eat too much, they are excreted from the urine and have relatively small reserves in the body. Fat-soluble vitamins need the help of fat to be absorbed by the body. They can be stocked in the liver and mobilized when needed, but it is difficult to excrete from the urine. Because of this, excessive intake is at risk of poisoning. However, the body has the maximum tolerance of vitamins, whether water-soluble vitamins or fat-soluble vitamins can not be consumed too much.Chen Xiafei especially reminded: "Vitamin overdose will appear anorexia, fatigue, nausea, drowsiness, muscle pain and other symptoms, because these symptoms are not specific, easy to be ignored." Therefore, the best way is to be under the guidance of a doctor, dietitian, to find out if you need vitamin supplements. ”