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.
The vitamin A recommendation for adolescents varies depending on age and gender. During the preteen years through age 13, your teen needs 600 micrograms per day. From age 14 on, teenage boys need 900 micrograms daily, whereas teen girls in this age bracket require 700 micrograms each day.