Do ordinary people lack vitamin A

Ordinary people usually do not lack vitamin A, but some special populations may be at risk of insufficient intake. Vitamin A deficiency is mainly related to factors such as a single dietary structure, digestive and absorption disorders, and special physiological stages.

Vitamin A is a fat soluble vitamin that is abundant in animal liver, egg yolks, dairy products, and other foods. Carotenoids in plant-based foods can also be converted into vitamin A in the body. Healthy individuals with a balanced diet can usually obtain sufficient vitamin A through daily food intake. The dietary guidelines for Chinese residents recommend that adult males consume 800 micrograms of retinol equivalent per day and females consume 700 micrograms, which is approximately equivalent to the content of 100 grams of carrots or 30 grams of pig liver. Long term vegetarians, patients with gastrointestinal disorders, pregnant women, and infants and young children need to pay more attention to the nutritional status of vitamin A. Vegetarians lack animal based food sources and have limited efficiency in converting carotenoids; Chronic diarrhea or liver and gallbladder diseases can affect fat absorption, thereby reducing the utilization rate of vitamin A; The demand for vitamin A increases during pregnancy and lactation, while infants and young children are prone to deficiency due to rapid growth and development and limited reserves. These populations may experience symptoms such as night blindness, dry skin, and weakened immunity.

It is recommended to prevent vitamin A deficiency through a diversified diet, consuming animal liver 1-2 times a week, and choosing dark vegetables in daily life. When there are suspected symptoms of deficiency, medical examination should be sought to avoid self administering high-dose supplements that may cause poisoning. Special populations can use vitamin A supplements under the guidance of a doctor, while also paying attention to controlling the intake of lipid foods to ensure absorption efficiency.