how much vitamin d does a person need daily
Adult men and women, including pregnant or nursing women, should consume 15 micrograms of vitamin D daily, according to the Institute of Medicine's Food and Nutrition Board. Vitamin D intake can also be measured in International Units; by this measure, adults require 600 International Units daily.Seniors over 70 years of age have a higher RDA -- 800 International Units, or 20 micrograms, of vitamin D each day.dult men and women, including pregnant or nursing women, should consume 15 micrograms of vitamin D daily, according to the Institute of Medicine's Food and Nutrition Board. Vitamin D intake can also be measured in International Units; by this measure, adults require 600 International Units daily.