Lack of proper hygiene
A variety of microbes, including viruses and bacteria, are present all around us. These can cause a variety of illnesses if we do not maintain a healthy immune system. One of the factors that contribute to the weakening of the immune system is the lack of proper hygiene. The best way to keep these microbes at bay is to maintain proper hygiene habits like washing hands regularly, wearing clean clothes and drinking pure water.
Lack of fruits and vegetables in the diet
Fruits and vegetables are rich in vitamins, minerals and antioxidants. These can help strengthen your immune system to ensure that you aren't prone to seasonal sicknesses like the cough, cold and the flu. Fruits and vegetables are part of a healthy, balanced diet and many studies have shown that the compounds present in them can increase the production of T cells, which form the first line of defense against all illnesses.
Stress is one of the major factors that impact your immune system. There are more than 300 studies, which say that there is a consensus between physiological stress and the ability to combat common infections that the human body may experience from time to time. Stress is known to cause a 'fight or flight' response and this can affect the synthesis of immunological molecules, which tend to weaken the immune system.
Being overweight or obese is linked to several factors like an unhealthy diet or lack of regular exercise. Being obese can lower your immunity and can even affect the production of antibodies and the multiplication of your white blood cells. Some studies suggest that obese individuals have poor antibody responses and are at a greater risk of infections and autoimmune diseases.
Regular exercise is necessary for leading a long and healthy life. It is suggested that you get about 30 minutes of moderate physical activity for at least 5 days a week to ensure that your immune system is functioning at its peak. Even moderate physical activity can significantly increase the production of immune cells.
Lack of sleep
Last, but not the least, sleep is the factor that many people ignore, despite it being one of the natural ways of the human body to restore its defense abilities. All the molecules that are necessary to initiate and maintain the immune processes are present in the brain. If you aren't getting the required amount of sleep on a daily basis, your body will not be able to fully rejuvenate itself. This results in a weakened immune system.