I seem to get colds/flus more often than most people. Suggestions?
arthole: I've had the exact same problem for years and after much fiddling around I too recommend vitamin D3.  it's the same as produced by the body from sunlight.  eat more fruits and vegetables.  maybe take a multivitamin and fish oil daily.  exercise regularly.  and get enough sleep FOR YOU.  some people need more than others.I don't think it's any surprise that people are much less sick in the summer.  People are in the sun much more in summer and hence have higher levels of vitamin D in their blood stream.I personally feel that sufficient vitamin C and zinc (for men especially) are also important.  But taking D3 at 2000-5000 daily is perfectly safe and certainly beneficial.Why else would your body produce after exposure to UV radiation?