In the United States, current guidelines suggest that consuming 400–800 International Units (IU), or 10–20 micrograms (mcg), of vitamin D should meet the needs of 97%–98% of all healthy people.

However, 800 to 1,000 IU is the dose that may have a better chance of giving a patient a normal vitamin D level. In some countries, vitamin D is listed in micrograms, and the relationship is as ...

Do you get enough Vitamin D in winter? We spoke to a registered dietitian/nutritionist about food you can eat and supplements ...

Our registered dietitian put 17 vitamin D supplements to the test — these eight options from brands like Nature Made and ...

If you’ve discovered you have a deficiency in vitamin D, you’re not alone. It’s particularly common among: people who get limited sun exposure people with dark skin people over 65 years old ...

per day for adults aged 19 to 70 20 mcg or 800 IU per day for those 71 and older There aren't many foods rich in vitamin D. Here are seven that can help you meet your daily requirement.

Sometimes the amount of vitamin D is expressed as International Units (IU). 1 microgram of vitamin D is equal to 40 IU. So 10 micrograms of vitamin D is equal to 400 IU." ...

When the Institute of Medicine announced last fall that it was changing the amount of vitamin D it recommends most adults get each day from 200 international units (IU) to 600 IU, some critics ...

A 21-year-old man or women exposed to summer UVB light generates 10,000 IU (the equivalent of 250 mcg, 25 multivitamin pills of vitamin D, or 100 glasses of milk) of vitamin D in 15 to 20 minutes.