A comprehensive guide to the science behind the supplements.

Stocksy

Do you know the little boost of confidence that happens after you get a fresh haircut?

A large patch of my hair fell from the top center of my hairline to the floor.

Woman Taking Vitamin For Hair Growth

Photo:Stocksy

Stunned, we both glared into the mirror, observing my new bald spot.

As I waited for my hair to grow back, I grappled with hard emotions like insecurity and shame.

Hair loss can also occur as a result of malnutrition in people with eating disorders (ED).

Even without an ED, hair loss can occur if someone is under-eating or deficient in certain nutrients.

For instance, a systematicreviewfound insufficient evidence to support biotin supplementation for hair health in healthy people.

“A biotin deficiency can lead to hair thinning and brittleness.”

For iron, thejury is still outon whether supplementing could benefit hair health, according to another review.

Zinc shares a similar story with iron in that it can become dangerously toxic if taken unnecessarily.

That said, there may be an association between supplementation and hair growth for those with a zinc deficiency.

Rosen and Draayer agree with the science.

In all cases, it’s important to address the underlying cause."

Vitamin D

People between 19 and 70 need15 mcg or 600 IUdaily.

Iron

Men need 8 mg while women need18 mgper day.

Zinc

Men need11 mgand women need 8 mg daily.

While beans, nuts, and whole grains offer zinc, it is less bioavailable than its animal sources.

Just like when you consider supplementation, consult with your healthcare provider before trying other options.

However, there are instances when hair loss merits immediate medical attention.