How Vitamin Deficiency Causes Hair Loss
Hair loss, also called alopecia, can happen when you don't get enough of certain vitamins and minerals.
These include vitamins B, D, C, and E, as well as minerals like iron, selenium, and zinc. Scientists aren't completely sure how these nutritional deficiencies affect thinning hair, but they do know that these nutrients are important for healthy hair growth. If you don't get enough of them from your diet or can't absorb them properly, it might lead to hair loss.

Nutritional deficiency is just one of many possible causes of hair thinning, and it often happens along with other issues.
Taking supplements might help with hair loss only if it’s caused by a specific vitamin or mineral deficiency. In fact, taking too much of some vitamins can make the problem worse. If you're experiencing thinning hair, it's a good idea to talk to your healthcare provider about whether supplements could be helpful for you.

How Vitamins and Minerals Affect Hair Growth and Loss
The vitamins and minerals you eat can affect how healthy your hair follicles are and how your hair grows.
But the exact connection between vitamin intake and hair loss is still not well understood.

Here's what we know:
- Vitamin deficiencies don't usually cause hair loss.

- Getting too much of certain vitamins, like vitamin A, can lead to hair loss.

- Not getting enough iron or protein can also cause thinning hair.

- Rapid weight loss (which might happen with vitamin deficiencies) can also lead to hair loss.


Some types of hair loss are linked to nutrients, while others are not:
- Androgenetic alopecia is a type of hair loss that runs in families.
It's the most common kind and isn't affected by diet.
- Telogen effluvium is when hair falls out more than usual due to things like stress or trauma.
This type of hair loss can also be linked to a lack of zinc or not getting enough calories.
- Alopecia areata is when the immune system attacks the hair follicles, causing hair to fall out.
Some studies suggest that deficiencies in micronutrients like vitamin D and zinc might be involved, but more research is needed.

There is not a lot of solid research on how vitamins and minerals affect hair loss.
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