Winter is the season of high incidence of respiratory infectious diseases, and influenza virus + new crown virus + mycoplasma pneumonia and so on are raging all over the country, which is a severe test for everyone.
Some people may say why every time they come to this viral pandemic, they are always knocked down and don't get better for a long time?
Some experts say that the lack of resistance to the virus may be caused by a lack of two vitamins in the body, which are vitamin A and vitamin D.
What is so special about these two vitamins? What's so great about them? Come and take a look with Coco
Supplement with 2 vitamins to help fight off viral infections!
Vitamin A – the "anti-infective" vitamin.
Vitamin A is an essential fat-soluble vitamin that is important for maintaining human vision, growth and development, and the structural integrity of epithelial tissue.
In addition to this, vitamin A also has the title of "anti-infective" vitamin, which is inseparable from these benefits:
Reduces the risk of respiratory infections.
When vitamin A is deficient, it can proliferate the cells in the middle layer of the epithelial cells of the trachea and bronchi, and break off the cilia of the epithelial cells, losing the normal protective function of the epithelial tissue, and making it easy to cause respiratory infection. Therefore, supplementing with adequate vitamin A can help protect the respiratory system from viruses.
Reduce the risk of severe disease from mycoplasma pneumonia.
Studies have found that children with low serum vitamin A levels are more likely to develop severe mycoplasma pneumonia. Vitamin A supplementation is effective in reducing the risk of severe mycoplasma pneumonia.
Helps improve lung function.
Some researchers supplemented patients with impaired lung function with vitamin A 1000 re d daily for 30 days, and found that vitamin A supplementation could improve forced vital capacity;
In addition, vitamin A supplementation can reduce pneumonia symptoms and shorten hospital stay in children with viral pneumonia;
In bronchopulmonary dysplasia of prematurity**, vitamin A supplementation can increase blood oxygen levels and promote lung and bronchial development.
Helps maintain the immune barrier.
In a prospective study of 2,774 children aged 5-12 years, it was found that vitamin A can help protect the integrity of the mucosa of the respiratory tract and digestive tract, strengthen the tight junctions between mucosal cells, and maintain the integrity of the immune barrier, thereby better helping to defend against the invasion of external viruses.
Vitamin D – more than half of it** is insufficient.
Data shows that more than 60% of the ** in China are deficient in vitamin D!
Vitamin D is not only a well-known "accelerator" for calcium supplementation, but also plays a role in defending against viral invasions
Reduce the risk of getting infected or getting seriously ill.
Researchers in Florida, USA, found that people with insufficient vitamin D levels had an increased risk of being hospitalized with the coronavirus infection to 46 times. A previous Israeli study also confirmed that people with low levels of vitamin D in their bodies also have a higher risk of severe disease or death.
Associated with mycoplasma pneumonia.
Serum 25-hydroxyvitamin D is the main form of vitamin D in the body, and studies have found that this level is related to the severity of the disease and the level of inflammatory factors in patients with mycoplasma pneumonia, and is related to the risk of bronchial mucus plugs.
Helps relieve flu symptoms.
Clinical trials evaluating the clinical efficacy and safety of vitamin D** influenza A in 400 infants have found that high-dose vitamin D** seasonal influenza can rapidly relieve symptoms, rapidly reduce viral load, and speed recovery.
Reduce the risk of acute respiratory infections.
Medical experts have analyzed 11,000 people in a special experiment, and the data shows that taking vitamin D supplements daily or weekly can reduce the risk of acute respiratory infections, and the biggest benefit is in people with severe vitamin D deficiency in the body.
Vitamin A and Vitamin D are missing
Your body will give these cues.
Lack of vitamin A manifestations.
Eye symptoms. Dry eyes, astringent eyes, blurred vision, or night blindness, decreased adaptability to dark environments, and may be accompanied by symptoms such as decreased tears.
*Symptom. Roughness, dryness, desquamation and other phenomena appear, especially in the arms, legs, shoulders, and lower abdomen. In severe cases, it is accompanied by dry hair, easy to fall out, or brittle, thin, and easy to break nails.
Failure to thrive.
Vitamin A deficiency can lead to poor height development, gingival hyperplasia and keratosis, and susceptibility to tooth decay.
How is it checked to confirm vitamin A deficiency? 】
Vitamin A in the human blood is generally in the form of serum retinol.
For children under 5 years of age, serum retinol 07 micromoles per liter is considered a high risk of vitamin A deficiency; ＜0.35 micromoles per liter, vitamin A deficiency is confirmed.
When the serum retinol concentration is between 07~1.At 05 micromoles per liter, there is still a risk of subclinical vitamin A deficiency.
Plasma serum retinol-binding protein 231 micromole per liter also indicates a possible vitamin A deficiency.
Lack of vitamin D manifestations.
In children, symptoms such as easy startling, crying, fatigue, and loss of appetite are often manifested;
Inflammation or infection often occurs, and it is not easy to get better after inflammation;
Feeling joint pain, muscle aches, weakness in the limbs and even difficulty walking;
Easily tired, often depressed, poor sleep.
How do I check for vitamin D insufficiency? 】
You can go to the hospital to have your 25-hydroxyvitamin D level checked to help you determine if you have a deficiency.
If the level of 25-hydroxyvitamin D3 < 30 ng ml, it means that the body does not have enough vitamin D, < 20 ng ml indicates that the body is deficient in vitamin D, and < 10 ng ml indicates that the body is severely deficient in vitamin D.
Put away this supplementary strategy for vitamin A and vitamin D.
Viruses are less likely to come and go.
Eat more of two types of food, vitamin A is not afraid of deficiency.
Some fruits and vegetables.
On the one hand, we can supplement more carotenoids, which are important for vitamin A, generally in dark green or reddish-orange-yellow vegetables or fruits, such as carrots, celery, spinach, amaranth, lettuce, pumpkin, snow peas, etc., and fruits are rich in mango, orange, loquat, etc.
Animal foods.
In addition, we can directly supplement foods rich in vitamin A, mostly animal foods, among which animal liver has the highest content, such as pork liver, chicken liver, cod liver oil, fish eggs, milk, cream, eggs, etc.
Tips: It is recommended that the daily intake of vitamin A is about 800 micrograms, and the maximum intake should not exceed 3000 micrograms.
If you eat too much at one time, or if you consume large doses for a long time, it may cause poisoning, causing symptoms such as nausea, decreased appetite, vomiting, blurred vision, hair loss, muscle and stomach pain, drowsiness, and even coma.
Teach you 3 tricks to help you replenish vitamin D
Basking in the sun supplement.
Exposure to the sun is a free way to supplement vitamin D, and the UVB in sunlight can help the body synthesize vitamin D, accounting for about 90% of the body's vitamin D supply.
It is recommended to go outdoors before 10 a.m. and after 4 p.m. to bask in the sun for 15 minutes at least twice a week.
Dietary supplements. Salmon, animal liver and fat, egg yolks, mushrooms, etc. contain a certain amount of vitamin D; Milk powder, yogurt, etc., usually add additional vitamin D, which can be appropriately increased.
Formulation supplementation. If you are still unable to maintain normal vitamin D levels after achieving the first two, you may consider taking vitamin D3 supplements. It has a higher affinity than vitamin D2 supplements, and the effect is generally better at the same dose.
Tips: The Dietary Guidelines for Chinese Residents recommend that adults aged 18 and 64 should consume 400 units of vitamin D per day, and the elderly over 65 years old should consume 600 units per day. Be careful not to overdose, otherwise it will cause side effects, loss of appetite, nausea, vomiting, diarrhea, polyuria, etc., and severe vitamin D poisoning will lead to death.