Which deficiencies can contribute to hair loss?

Hair loss has many possible causes

Iron deficiency, restricted diets, illness, thyroid conditions, medication, inflammation, and genetic pattern loss can overlap. The pattern and history guide testing.

More supplementation is not automatically better

High-dose iron, vitamin A, selenium, and other supplements can cause harm or worsen hair loss when taken without an indication.

• Review diet and symptoms
• Test when clinically indicated
• Avoid megadoses

Treat the cause that is actually present

A clinician can decide whether laboratory testing, scalp examination, medication review, or referral is appropriate before a treatment plan is chosen.

Diagnosis comes before a product or procedure

Hair thinning can reflect androgenetic hair loss, temporary shedding, medication effects, illness, nutritional deficiency, thyroid or other hormonal conditions, inflammation, scarring disease, traction, or more than one contributor. Pattern, timing, scalp symptoms, family history, and examination help distinguish them.

Sudden shedding, sharply defined patches, scalp pain, scale, inflammation, scarring, or loss of eyebrows or body hair deserves medical assessment. A supplement, injection, or styling change should not delay investigation of a concerning pattern.

Testing and treatment should follow the history

Not everyone with hair loss needs the same blood tests. A clinician may consider nutrition, iron status, thyroid health, medication, illness, weight change, and other factors when the history suggests them. Taking high-dose supplements without a demonstrated need can create harm and may not address the cause.

Evidence and suitability differ for topical or oral medication, platelet-rich plasma, transplantation, cosmetic camouflage, and emerging biologic products. A positive early study does not make every protocol or product equivalent.

Set expectations around time and maintenance

Hair growth cycles mean that shedding and response are assessed over months rather than days. Treatment may slow progression or improve density without restoring a previous hairline or producing the same response in every person.

Some approaches require ongoing use to maintain benefit. Discuss side effects, contraindications, pregnancy or fertility considerations where relevant, cost, photographs, follow-up timing, and what happens if the response is limited.

Know Enhancement Institute’s scope

Enhancement Institute does not provide hair-transplant surgery and does not use this article to establish candidacy for medication, PRP, exosome-based products, or another treatment. Product identity and current Canadian regulatory status must be checked for any emerging therapy.

A dermatologist or appropriately qualified hair-loss clinician can assess diagnosis and options. The appropriate next step may be reassurance, styling support, treatment of an underlying issue, established medical care, procedural care, or no intervention.

Questions to resolve before making a decision

Ask what diagnosis or goal is being addressed, which outcomes are realistically measured, what remains uncertain, and which alternatives include observation or no treatment. Request the evidence for the exact product, device, medication, or procedure being proposed rather than evidence borrowed from a related intervention.

Confirm provider qualifications, complete cost, privacy, preparation, material risks, urgent-contact instructions, routine follow-up, and the plan after limited response or dissatisfaction. Bring a current medication list and relevant records, and allow time for questions. Record which clinician will remain responsible if another referral or urgent assessment becomes necessary for safety. Note any claim that feels too certain, incomplete, outdated, or inconsistent with current clinical practice and ask for clarification. This article is general education; it does not diagnose, establish candidacy, or replace individualized advice from the appropriate regulated clinician.