Get enough sleep and manage stress. Sleep deprivation and stress overload increase the hormone cortisol, prolonged elevation of which suppresses immune function.
2.Avoid tobacco smoke. It undermines basic immune defenses and raises the risk of bronchitis and pneumonia in everyone, and middle ear infections in kids.
3.Drink less alcohol. Excessive consumption impairs the immune system and increases vulnerability to lung infections.
4.Eat plenty of vegetables, fruits, nuts, and seeds, which will provide your body with the nutrients your immune system needs. A study in older adults showed that boosting fruit and vegetable intake improved antibody response to the Pneumovax vaccine, which protects against Streptococcus pneumonia.
5.Stay away from sugar
