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Pregnant women. If you’re pregnant, you need larger amounts of certain vitamins and minerals, particularly
iron and folic acid. Prenatal vitamins, which can be purchased by prescription or over the counter, meet
these needs. It is important not to take other supplements unless specifically advised by a qualified health
care provider. The earliest weeks of pregnancy are crucial in the fetus’ development, so the sooner in
pregnancy you start taking a prenatal vitamin, the better.
All women. Osteoporosis affects more women than men: about 80% of the 10 million Americans with
osteoporosis are women. That’s why it’s especially important for women to get enough bone-building
calcium and vitamin D. Some multivitamins supply relatively little calcium—typically only 40 mg to 160 mg,
which is far below the daily requirement of 1,000 mg to 1,200 mg. And depending on your age, standard
multivitamins may or may not meet your vitamin D needs, which increase as you get older. Vitamin and
mineral supplements formulated for women usually supply more, although not all, of your daily calcium
requirements and may have additional vitamin D, too. Although dietary sources of calcium and vitamin D are
best, supplements can help make up the difference. You need 1,000 mg of calcium daily if you’re between 19
and 50 years old, and 1,200 mg of calcium after that. As for vitamin D, some experts advise getting 1,000 IU
from supplements.
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