The antioxidant known as beta carotene is a staple in the daily supplement ritual for many people (myself included). A study published this week stated that taking beta carotene for 15 years or more will dampen future dementia.

If you have a history of Alzheimer's disease, this study seems to suggest that you may want to read up on and begin taking beta carotene as part of your daily diet. Fruits and vegetables are full of this antioxidant, but many of us don't get enough fruits and veggies anyway.

The impact here from the researchers was the length of time taking beta carotene, not the simple act of taking it every day. Study lead author Francine Grodstein stated "my hypothesis is that it's how long you take it."