Please make appropriate changes as needed. NOAA Weather Radio (NWR) broadcasts NWS warnings, watches, forecasts and other hazard information 24 hours a day. NWR is the prime alerting and critical information delivery system of the NWS.
Intake Recommendations. Most women need 2,333 International Units, or 700 micrograms, of vitamin A each day, while men need 3,000 IU or 900 micrograms, according to the Linus Pauling Institute. Because vitamin A plays such an important role in a developing babyâs development, pregnant and breastfeeding mothers need more vitamin A -- 2,567 IU and 4,333 IU, respectively.
That's how vitamin D is measured. The Institute of Medicine, a nonprofit organization that gives expert advice on health, recommends that adults age 19 to 70 get 600 IU a day. If you're older than 70, you need 800 IU a day. For calcium, the amount you need depends on your age and sex. All adults 19-50: 1,000 milligrams.