Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of vitamin D in a teaspoonful of cod liver oil. However, 800 to 1,000 IU is ...
Vitamin D is crucial for bone health, immune function, and overall wellbeing, especially for adults over 75. Due to reduced sunlight exposure and less efficient vitamin D synthesis with age, older ...
“Those aged 19 to 70, including people who are pregnant or lactating, need 600 IU (15 micrograms) of vitamin D daily, while those over 70 need 800 IU (20 micrograms) daily,” says Andrew ...