What Vitamin Deficiencies Can Cause Hair Loss: Exploring Nutritional Causes

Written by Our Editorial Team
Last updated

A balanced diet supplying adequate vitamins and minerals is essential for maintaining healthy, growing hair. Deficiencies in certain nutrients can disrupt the hair growth cycle and potentially lead to thinning or shedding over time.

What vitamin deficiencies can cause hair loss?

Some of the most common nutritional deficiencies linked to excessive hair loss include biotin, iron, vitamin D, and vitamins B12, A, C, and zinc.

Biotin (Vitamin B7)

Biotin plays a key role in keratin production. Deficiency can result in dry, brittle hair and scaling of the scalp. Fried eggs, almonds and sweet potatoes are good biotin sources.


Iron transports oxygen to hair follicles. Low levels may cause thin, weak strands. Leafy greens, beans, lentils and lean red meat prevent fatigue and hair fragility.

Vitamin D

Vitamin D regulates cell proliferation. Deficiency has been linked to alopecia. Fatty fish, eggs and shiitake mushrooms contain vitamin D.

Vitamin B12

B12 supports nervous system function. Vegetarians and vegans are at risk if no supplements taken. Salmon, tuna and fortified foods supply B12.

Vitamin A

Antioxidant vitamin A protects follicles from damage. Liver toxicity rather than deficiency can induce shedding.

Vitamin C

Vitamin C aids collagen production for strong hair. Bell peppers, kiwi and broccoli are vitamin C sources.


Zinc supports scalp health and sebum production. Pumpkin seeds boost absorption versus supplements alone.

Addressing Deficiencies

Blood tests determine shortfalls. Focus on nutrient-dense whole foods before supplements. Regrowth may take 6+ months with optimized diet.

A balanced diet featuring antioxidant-rich fruits and vegetables, lean proteins and healthy fats supplies hair with the vitamins and minerals needed for growth and strength.

Unlock the Power of Scandinavian Biolabs for a Healthier, Fuller Head of Hair

At Scandinavian Biolabs, we believe that everyone deserves to feel confident and beautiful in their own hair. That's why we've dedicated ourselves to developing cutting-edge formulations against hair thinning that are safe, effective, and backed by science.

Our revolutionary products are designed to combat your hair loss concerns. With Scandinavian Biolabs, you can finally say goodbye to hair loss and embrace a healthier, fuller head of hair.

Don't let hair loss hold you back any longer. Experience the Scandinavian Biolabs difference and unlock the potential of your hair's natural beauty.

Hair Growth Routine | For Men
Hair Growth Routine | For Men
Formulated to combat shedding & signs of balding
Hair Growth Routine | For Women
Hair Growth Routine | For Women
Formulated to combat thinning hair & visible scalp

Read more: