The best supplements for hair loss: what actually helps
As doctors at My Hair UK, we see the full spectrum of hair loss. Some patients arrive with clear nutritional deficiencies. Others have pattern hair loss with normal blood tests. Supplements sit in the overlap between nutrition and dermatology. They can help when you correct a true deficiency. They offer mixed results when you do not. The evidence base is uneven, so the smartest plan is to test first, target second, and avoid scatter-gun shopping. Nutrient deficits are linked with shedding and regrowth may follow correction, but over-supplementation can backfire and provoke shedding in its own right, and there aren't really any supplements that can improve hair loss by taking larger amounts or if a patient doesn't have a deficiency in that nutrient in the first place.
Biotin is the most popular hair supplement in the UK, yet frank biotin deficiency is rare outside specific medical settings. The clinical literature contains case reports where biotin corrected hair or nail problems in clearly deficient patients, but there are no robust trials showing benefit for typical male or female pattern hair loss when levels are normal. Newer summaries repeat the same message. If you are biotin-replete, extra biotin has not been proven to change density or calibre. If testing shows deficiency, correct it. That is a very different question.
Vitamin D is frequently low in the UK, and low levels track with several non-scarring alopecias including telogen effluvium and androgenetic alopecia. Mechanistic work links vitamin D signalling to hair-cycle control, while observational studies show an inverse relationship between serum 25-OH-D and shedding across multiple conditions. What we do not yet have is a large randomised UK trial proving that repletion speeds regrowth in pattern loss. In practice, we check levels and replete to national targets for general health. It is a sensible, low-cost move when levels are low, and it aligns with the biology.
Iron remains a common concern, especially for women with heavy periods, low dietary iron, or postpartum shedding. The relationship between ferritin and hair is complex. Some studies show lower ferritin in hair loss. A 2021 systematic review could not confirm a clear association across all nonscarring alopecias. Our clinical stance is pragmatic. If ferritin is low or borderline with symptoms of iron deficiency, correction is reasonable, and we pair it with investigation of the cause. Treat the person, not just the number, and retest to confirm repletion.
Zinc is essential for DNA synthesis and immune regulation within the follicle. Alopecia is a recognised sign of frank zinc deficiency and regrowth can follow correction, yet data across telogen effluvium and pattern loss are inconsistent. We reserve zinc supplementation for patients with low serum zinc or dietary risk, and we avoid high-dose, long-term use without a biochemical indication.
Omega-3 and antioxidant combinations have limited but interesting evidence, particularly in women with diffuse thinning. A six-month randomised study reported improved density, a lower telogen percentage, and patient-reported gains with a marine-derived omega-3 and omega-6 plus antioxidant blend. This is not a cure, and brand formulas vary, yet for patients who prefer a nutritional adjunct while medical therapy is considered, this category is reasonable. We frame it as an adjunct, not a replacement for evidence-based treatments.
Plant-based 5-alpha-reductase inhibitors and so-called natural DHT Blockers for hair loss such as pumpkin seed oil and saw palmetto sit closer to pharmacology than nutrition. A 24-week randomised controlled trial of pumpkin seed oil in men with mild to moderate androgenetic alopecia showed increased hair count versus placebo, with good tolerability. Saw palmetto evidence is mixed but growing, with small trials and comparative studies suggesting modest benefit in some patients. Doses and preparations differ, which complicates guidance. If you choose this route, use standardised products and reassess at six months.
What do we actually recommend at My Hair UK? We start with diagnosis. We take a full history, examine scalp and hair, and look for triggers such as childbirth, thyroid disease, weight change, dietary restriction, new medication, or illness. We then focus supplementation on what your tests show. If you are low in vitamin D, we replete. If ferritin is low, we address iron and the cause. If zinc is low, we correct it and monitor. If your bloods are normal, broad multivitamins are unlikely to transform pattern hair loss. In that setting we discuss medical therapy, procedures, or both, and consider adjuncts such as omega-3 blends or pumpkin seed oil where appropriate. The goal is measurable change, not a cupboard full of capsules.
See your GP before you see us. A short health check sets you up for a better consultation. Ask your GP for a focused panel that typically includes full blood count, ferritin, TSH, vitamin D, B12, and zinc, and mention any menstrual, thyroid, dietary, or recent illness history that could drive shedding. Bring the results to your My Hair UK assessment. It saves time, reduces guesswork, and lets us build a plan that targets your specific deficits rather than guessing at the till in a pharmacy. PMC
Where do supplements fit next to surgery? Supplements can correct deficiencies that cause hair loss and can support scalp health, yet they do not recreate density in established pattern loss. That is where surgery may enter the plan. At our clinic typical hair transplant costs in the UK range between about £2,899 and £4,899 depending on graft numbers and your goals, with smaller hairline cases at the lower end and larger crown or combined work at the higher end. We discuss numbers transparently and match them to what you want to see in the mirror. Ask yourself a simple question as you plan: do you want to slow loss, fill specific gaps, or do both, and what evidence supports each step for you?
Putting it together means testing, correcting what is low, and choosing adjuncts with the best signal. For many UK patients that includes vitamin D when deficient. For selected women with low ferritin, iron repletion matters. For those who prefer nutritional adjuncts, marine omega-3 blends have some support, and plant-based 5-alpha-reductase inhibitors may help a subset. Biotin belongs to those with demonstrable deficiency or clear clinical indications rather than to everyone with thinning. If you want a plan that is specific, book a consultation with My Hair UK and bring recent GP bloods. We will build your regimen around evidence, your biology, and your aims.
Related Articles:
https://aerztestellen.aerzteblatt.de/de/unternehmen/my-hair-clinics
https://aerztestellen.aerzteblatt.de/de/unternehmen/my-hair-clinics-london