I try to take my vitamins every day. I take a multi, a fish oil, vitamin C, an 81mg aspirin and vitamin D. Vitamin D is something I added this year. I used to believe that we got enough D from sunlight and fortified foods like milk but then I read an article about the fact that most of the nation is vitamin D deficient. Jean Carper explains why we need to take D supplements:

Cuts heart attacks- men with low levels suffer twice as many heart attacks
Curbs cancer- 2000IU daily may reduce breast cancer by half and colon cancer by two-thirds
Prevents diabetes- men with vitamin D rich blood were 72% less apt to develop diabetes
Boosts the brain- helps fend off depression and dementia

How much each day? Kids need 1000 IU and adults need 1000-2000 IU.
Take care-
Amy