1. Excessive anxiety. Continuously coping with stress, the brain will increase the production of cortisol . Too much cortisol will inhibit the immune system and will be more susceptible to colds and virus infection.
2. Deficiency of vitamin D. People with low vitamin D levels are likely to affect immunity. It will increase the risk of autoimmune diseases
3. Don’t like to drink water. As people get older, they are more likely to be dehydrated. This puts the immune system under pressure, and dehydration limits the secretion of anti-protein into the saliva, which does not better prevent infection.
4. Eat too much sugar. Too much sugar can easily cause inflammation, which may reduce the function of white blood cells and lead to a decrease in immunity.
5. Alcoholism. A night of alcoholism is enough to damage the immune system.
6. Lack of exercise. Sitting for a long time will damage the body's ability to fight infections. Excessive exercise and not giving yourself time to rest will damage the function of the immune system.
7. Weight exceeds the standard. Obesity affects immune function and prevents white blood cells from producing antibodies to fight inflammation.
8. Stay up late often. When a person is sleeping, the body will repair itself, which can ensure the normal functioning of the immune system.
