Better get your B

If recent health efforts have you eating less meat, consider adding a B12 supplement to your diet. Most meat eaters get plenty of vitamin B12 from their diets, but people who don't eat meat or who eat very little may not get enough B12 for good health. That's because this nutrient, which helps maintain healthy nerve cells, is found almost exclusively in animal products.

If you get less than 25 micrograms per day, add a supplement. Three ounces of beef contain between 1.5 and 2.2 micrograms of vitamin B12. Salmon is an excellent source with 6 to 7 micrograms per half cup serving. It's also found in milk and some fortified cereals.

Although you need only about 25 micrograms per day of B12, aim for about 800 micrograms per day from food and supplements for optimum RealAge benefits. Many people have trouble absorbing vitamin B12, and the body can tolerate much more than 25 micrograms per day.