Hair loss: foods that strengthen hair keratin

Hair loss may be associated with a shortage of essential nutrients in the body. Find out which foods can support the keratin in hair strands and how minor changes to your diet may make a difference.

Why does diet affect hair loss?

Hair needs a steady supply of protein, vitamins and minerals to grow strongly. If these nutrients are lacking, the production of keratin may be affected.

Hormonal and genetic factors can also play a role, but a balanced diet provides the body with the nutrients it needs to reduce hair fragility and support healthier growth.

Which nutrients strengthen hair keratin?

Hair health relies on a range of vitamins and minerals involved in building the hair fibre. Including these nutrients regularly may help make strands more resilient.

Key nutrients worth including in your meals are:

• Protein, which is needed to form keratin.
• Biotin, which is important for hair metabolism.
• Iron, which supports oxygen delivery to the scalp.
• Zinc, linked to hair growth and renewal.
• Vitamin D, associated with the hair’s natural cycle.
• Omega-3, which helps support scalp health.

Which foods should feature more often in your diet?

Eggs, fish, lean meat, milk and dairy products provide high-quality protein. This is essential for maintaining the structure of hair strands and encouraging their natural renewal.

Dark green vegetables, beans, nuts, seeds, citrus fruits and other nuts also supply important vitamins and minerals. Together, they form a nourishing combination that can strengthen hair from within.

Which habits can be harmful despite a good diet?

Highly restrictive diets, rapid weight loss and a high intake of ultra-processed foods may lower the consumption of essential nutrients. As a result, the body gives priority to vital functions, and hair may become weaker.

Stress, poor sleep, smoking and certain illnesses can also contribute to hair loss. Looking after your lifestyle is therefore just as important as following a balanced diet.

When does hair loss require specialist attention?

Losing some strands each day is normal, but heavy or persistent hair loss, or hair loss accompanied by visible patches, should be assessed by a professional to establish the correct cause.

In many cases, laboratory tests can identify nutritional deficiencies or other conditions requiring specific treatment. Combining a healthy diet with medical advice can therefore deliver more effective results for hair health.