Things may seem very obvious, but if you are to survive this "swine" flu season unscathed, it's a good idea to stock up on some Vitamin D before the end of the summer (which is practically over).  The skin converts Vitamin D to its active form using the energy from the Sun's UVB rays.  This reaction produces approximately 10,000 IU of vitamin D after a 10 minute exposure.  So, it doesn't take that long to get your daily dose of Vitamin D, without increasing your risk of skin cancer.  Always use SPF 15 or greater sunblock when out in the sun for longer.  And check out the upcoming eBook, "The Ultimate Swine Flu Survival Guide" for more information about how Vitamin D can be used as a preventative for the swine flu.