In general, more than 55% of people in China lack vitamin A, and more than 50% of people lack vitamin D. The most commonly-deficient vitamins are B1, B2, and C, especially in the elderly, and the lack of vitamin C is particularly serious. The above five kinds of vitamins are the vitamins that the Chinese people currently lack most. Vitamin A is known as the "beautiful vitamin of alum teeth." This is because its main role is to maintain the healthy growth of the skin, hair, bones, and mucous membranes and enhance vision and reproductive function. Vitamin A is found only in animal foods. There is no vitamin A in plant foods, and only the precursor of vitamin A can be turned into vitamin A carotene in the human body. Vitamin D deficiency usually occurs in babies 2 months to 1 year of age, pregnant and lactating women. Once children lack vitamin D, it is easy to get rickets. The easiest way to supplement vitamin D is to enjoy the sun. Because there is a substance called "7-dehydrocholesterol" in human skin, it can be converted to vitamin D under the irradiation of ultraviolet rays and is used by the body. Of course, taking some cod liver oil, egg yolk, and liver is also very beneficial. Vitamin B1 has the highest content in grain products with germ and molting. The pasta is now refined and processed. As a result, most of the vitamin B1 is lost during processing. It is a pity. It is no wonder that some nutritionists said: “The poor people’s food was rich in vitamin B1. Now people have better conditions, but the level of nutrition is not as high as that of the poor.†The main source of vitamin B2 is animal liver, as well as eggs, milk, meat, fish, green vegetables, and beans. In China, the vitamin B2 content in the dietary structure is relatively small and can only reach half of the standard, especially in the off season of vegetables. This situation is very serious. Therefore, vitamin 82 deficiency in our country is more common. Vitamin C is the main raw material for the formation of intercellular substance. Its main role is to connect cells together, maintain the normal function of teeth, blood vessels, bones, and muscles, promote wound healing, and increase the insensitivity to diseases. The most common deficiency of vitamin C is bleeding gums and subcutaneous bleeding. Disposable Medical Face Mask not only can prevent inhalation of dust, etc.: The activated carbon cloth in disposable masks can prevent poisonous gas, odor, and dust from entering the body through the respiratory tract, it also can Anti the 98% bacterial in your daily life. Disposable Medical Face Mask Surgical Earloop Disposable Face Masks Medical,Surgical Face Mask,Meltblown Filter Face Mask,Conoravirus Prevention Disposable Face Mask RFX+CARE Manufacturing Co.,Ltd. , https://www.rk-rfxcare.com