hello and thanks for writing to HCM. I read your query and understand you are concerned regarding improving immune status. few more details like following would have helped: your age and sex,your medical and drug history,your sexual history and occupational history etc i would advise you the following: Do a blood test,and a liver function test. if they are all normal,cut back or stop taking alcohol -get plenty of quality sleep and avoid stress -get some exercise and get sun exposure for 10-15minutes daily atleast to ensure adequate vitamin d levels -take probiotics like yogurt etc -you can try garlic,gooseberries ,bittergourds in diet which are known to improve immunity and have a healthy balanced diet in general -make you are vaccinated for your age and have proper hygiene -try natural herbs like ginseng extract All this above tips and measures will help your case,if you are free from other diseases. If your blood tests and liver function are abnormal,your doctor will treat you accordingly. Hope this helps and clarifies.followup if needed. good day