Hair loss can occur for many reasons; to name a few, genetics, illness, and hormone imbalance all play a big part. But, did you know that your diet could be causing your hair loss or hair thinning?

If your diet is lacking in important nutrients, you might see your luscious lock suffer the consequences. Our hair follicles need nourishment just like every other part of our body. And, the hair growth cycle can be interrupted if you lack essential nourishment.

Correcting nutrient deficiencies could fix the problem.

If youโ€™re wondering which nutrient imbalances could cause a thinning of hair, this article is for you. Letโ€™s go over 3 vitamin deficiencies that could be causing your hair loss.

Vitamin D

Vitamin D

The most abundant source of vitamin D is the sun. This is why it’s called the sunshine vitamin. It’s estimated that 1 billion people across the globe have a vitamin D deficiency, the adult population being the most affected.

Having low levels of vitamin D can cause a whole host of unwelcome symptoms such as depression, fatigue, back pain, muscle pain, bone loss and, the causing your hair loss.

Specifically, hair loss in women has been linked to vitamin D deficiency.

Luckily, it’s an easy fix as this can be remedied with regular sun exposure, eating more fatty fish, mushrooms, and eggs. You can also supplement with D3 up to 4,000 IU while your vitamin D levels are being monitored.



Iron deficiency is the worldโ€™s most common nutritional deficiency. It’s causing your hair loss and is well known as a potential cause.

Iron is extremely important for the hair growth cycle as each hair follicle needs a good, oxygenated blood supply. When you are deficient in iron, also known as anemia, your blood becomes less oxygenated. This can slow hair growth and eventually result in thinner hair.

Vegans and vegetarians are at a higher risk of developing anemia as meat elimination can cause low levels of iron. Women who are menstruating or pregnant can also develop anemia.


Zinc is necessary for protein synthesis. While our hair is 95% protein, this makes zinc an important nutrient for hair growth. Having a zinc deficiency can cause changes in the hair structure, causing weakening, breakage, and hair loss.

Studies have shown that the most common symptom of zinc deficiency is hair loss. Studies also suggest that supplementing with zinc can help reduce hair loss caused by a zinc deficiency.

However, there is a fine line — too much zinc can cause hair loss issues as well. Mayo Clinic suggests daily zinc intake should be 8mg for women and 11mg for men. According to the NIH, 40 mg of zinc per day is the upper limit dose for adults

Zinc can be found in red meat, poultry, pumpkin seeds, egg yolks, and soy products.

Hair loss is preventable if treated

Hair Loss Tips

Severe hair loss can be prevented if the root cause is treated. For those with DHT-sensitive hair follicles (male pattern baldness), early treatment shows the best outcomes.

For those who are hormonally imbalanced, getting your hormones monitored and corrected by a doctor should correct hair thinning.

Finally, those with nutrient deficiencies, causing your hair loss, or thinning can be avoided if you manage your vitamin levels. If you suspect you might have one of these common deficiencies, talk to your doctor about blood work and correction.

Correcting the root cause, in all of these situations, will help stop the progression of hair loss and perhaps induce new, healthy hair growth.

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