There are different types of way to enhance the immune system. I think, if you drink the lemon to reconstruct the acid-alkali level. It is essential to drink fresh lemon juice with water. You also need to take it with tea, salad to manage the body's internal environment at defined pH level to supports bacteria and viruses that grow in more acidic level in the water. Herbal drugs are one of the most efficient ways to get the proper treatment. There are different types of herbal supplements are use to enhance the immune system. The second most important reason to enhance the immune system is to take the enough sleep of nearly 6 to 10 hours. Protein is one of the most immune boosters to get the better power. Drinking enough quantity of water is one of the most essential systems to boost the immune system.
Immunologist is not advising you to take the coffee. It is one of the most sever things to reduce the immune system. It is not advisable to eat the refined sugar. You can also avoid the ready to eat foods and soft drinks which are hazardous for the body.