Soaking Up Some Vitamin D
With summer in full effect, it should be easier to get some sun exposure to help boost your intake of vitamin D, aka the "Sunshine Vitamin." But have you ever wondered if you're getting too little? And what's the best way to get it? While you are enjoying fresh air and sunshine this summer, keep in mind:
- Vitamin D is produced by your skin when it's exposed to sunlight, but it can also be obtained from certain foods, vitamin D-fortified foods and supplements.
- Vitamin D is important to bone health because it helps to absorb calcium, which is used to make strong bones and teeth.
- Without enough vitamin D, only about 10 to 15 percent of dietary calcium can be absorbed.
- It prevents diseases, such as osteoporosis, heart disease and some cancers.
- It strengthens your immune system.
Vitamin D Deficiency - Are You at Risk?
In a study in the American Journal of Clinical Nutrition, vitamin D deficiency is now recognized as a worldwide problem. Another study was published in the journal Pediatrics. The results showed a high proportion of infants and their mothers in New England were deficient at the time of birth even though prenatal vitamins were taken. Risk factors for vitamin D deficiency:
- If you have low vitamin D intake and little or no sun exposure (due to winter season, high latitude, sun avoidance, etc.)
- If you have darker skin pigmentation (e.g., African-Americans, Hispanics, Asians) - increased skin pigmentation reduces the skin's ability to produce vitamin D
- If you are obese
- If you are an older adult
If you believe that you may be at risk for vitamin D deficiency, please talk with your doctor to determine if you need a screening blood test.
Note: The content of this blog is for informational purposes only. It is not intended for use as diagnosis or treatment of a health problem or as a substitute for the professional consultation of a physician or qualified health care provider. If you have specific questions or concerns regarding a health or medical condition, contact your physician or a licensed health care professional.
Getting What You Need
|
Age |
Recommended daily dietary intake for vitamin D National Institutes of Health (NIH) |
|
Ages 1 to 70 |
600 IU (international units) |
|
Ages 70+ |
800 IU |
Vitamin D from Food
Some foods are good sources for the vitamin, including:
- Fatty fish (e.g., tuna, salmon, mackerel)
- Fish liver oil
- Small amounts are found in beef liver, egg yolk and cheese
- Fortified foods and beverages (e.g., milk, cereal, orange juice, yogurt, margarine)
- Vitamin D2 and D3 supplements
Vitamin D from the Sun
You can meet some of your vitamin D requirement from sun exposure, but keep in mind:
- The NIH recommends approximately five to 30 minutes of sun exposure between 10 am and 3 pm at least twice per week to the face, arms, legs and back without sunscreen.
- The season, time of day, cloud cover, smog and sunscreen can affect the amount of vitamin D that gets produced by the skin.
Related: Read 5 Steps to Help Avoid Osteoporosis for information on ways to help keep your bones strong.