My Tennis partner(Age:32) died 2 months ago due to cardiac arrest which was kind of shocking for me. Considering he plays 6 hours tennis and also goes to gym on a regular basis. I decided to my physical and went to doctor last week. Doctor handed out a prescription slip with the following supplement list even before examining my health: Omega 3 with Fatty acid - 2000mg/day Vitamin D 5000 UI - 1 per day B Complex - 1 per day I asked the doctor, how long should I eat this ...his reply was "life long". My test result came out 2 days later and show everything is fine. Now, I'm reading about taking supplements in web, it says excessive vitamins could be risky. For example, I'm playing in sunlight atleast 7 hours/ week ...am i still suppose to take Vitamin D supplement? or is it after certain age it is recommended to take these supplement (I'm 37)?