MINNEAPOLIS (WCCO) — When you live in a state with long winters, it’s not uncommon for doctors to recommend extra Vitamin D.

But new guidelines have lowered the healthy level of Vitamin D needed in a person’s blood. Researchers say that change means millions of Americans might not need to take supplements.

Some doctors don’t agree with the new guidelines, but others say a balanced diet and a little sun can maintain Vitamin D levels.

Another new study done in New Zealand shows Vitamin D does not help fight off winter colds.

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