By Jeff Prescott and Brian ManaloMay 25, 2013
More than 40 percent of men and women in the United States use multivitamins. They are the most commonly used dietary supplements. In women older than 60 years, the use of supplemental calcium has seen large increases. The use of vitamin D has increased in both men and women.
A recent study of older women suggests multivitamins may not be as helpful as people think. In the study, researchers found an increased risk of death in older women taking several commonly usedvitamin and mineral supplements. Although these findings may seem troubling, you should not stop taking vitamins that your doctor has prescribed unless told to do so.
What Are Vitamins and Minerals?
Vitamins are nutrients that your body needs in small amounts to stay healthy. The amount you need depends on the vitamin. Because your body can only make limited amounts of vitamins for itself, the rest must come from a nutritious diet. Minerals are other nutrients that your body needs to function properly. Examples of minerals include iron, calcium and zinc.
Using Vitamins and Minerals
Before starting any vitamin or mineral supplements, you should talk to your doctor to determine if it is appropriate. Because these supplements may affect the way prescription drugs work, you should also tell your pharmacist if you begin taking them.
It is important to remember that supplements are not a substitute for a healthy diet of nutritious foods. As you get older, however, you can become deficient in certain vitamins and minerals, and the nutrients you get from diet alone may not be enough. In these cases, you should not treat yourself with over-the-counter supplements without first talking to your doctor.
Due to its beneficial effects, vitamin D has seen more and more use over the years. In the body, vitamin D helps your body absorb calcium from the gut and is essential for strong, healthy bones. It can help reduce the risk of osteoporosis, a condition that makes your bones brittle and more prone to breaking. Taking the right amount of vitamin D may also reduce the risk of certain cancers and heart disease.
There are two forms of vitamin D: vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Because vitamin D3 is the form of vitamin D that is actively made by and used in your body, you should look for vitamin D3 if your doctor recommends it as a supplement. If you are a strict vegetarian or vegan, you can use vitamin D2 because it does not come from animal sources. After you take D2, it is converted to vitamin D3 by your body.
Normally, vitamin D is made when you go outside and your skin gets exposed to the sun. It is thought that five to 30 minutes of mid-day sun twice a week without sunscreen is enough to get the right amount of vitamin D. As you get older, you might not get enough sunlight, especially in the winter. Also, your skin and other organs that are responsible for making vitamin D might not work as well. Therefore, your doctor may supplement your vitamin D intake.
Almost all the calcium in your body is found in your bones. As you age, calcium tends to leave your bones, which can put you at risk for osteoporosis. Deficiency may also put you at risk for osteomalacia, which is a softening of the bones. To maintain strong bones as you age, you should do weight-bearing exercises, such as brisk walking, golf or dancing. Because vitamin D helps you absorb more calcium, your doctor may recommend supplementation with both of these nutrients at the same time.
If your doctor recommends a calcium supplement, it is important that you buy the right one. Several different forms of calcium are available in stores. They are known as calcium salts. Each salt has varying amounts of calcium in it. For example, calcium carbonate has more calcium in it than calcium citrate. Talk to your pharmacist if you are not sure whether you are purchasing the right product or how much you should be taking.
When taking calcium supplements, you might experience constipation. You can lessen these side effects by drinking plenty of fluids, eating lots of fiber (or using a fiber supplement) and exercising