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Hair Loss Guide · NYC

Why you're shedding, explained straight.

Genetics, DHT, stress, postpartum, iron, thyroid — hair loss has many causes, and the right fix depends entirely on which one you have. Here's how to tell.

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Most common
Genetic (DHT)
Often missed
Iron / thyroid
Reversible?
Depends on cause
First step
Diagnosis

Not all hair loss is the same. Genetic (DHT-driven) loss is permanent and progressive, while shedding from stress, postpartum changes, iron deficiency or thyroid issues is often reversible — which is exactly why getting the diagnosis right matters before any treatment.

The main causes

Each behaves differently and responds to a different plan.

  • +Genetic / DHT — receding hairline, thinning crown; permanent without treatment
  • +Stress & postpartum (telogen effluvium) — sudden diffuse shedding; often reversible
  • +Iron, vitamin & thyroid — correctable medical causes
  • +Traction — from tight styles and extensions

How Folli diagnoses it

We combine a scalp analysis with relevant bloodwork to pinpoint the cause, then recommend the lightest effective plan — medical, regenerative or surgical. If you don't need surgery, we'll tell you.

★★★★★

They actually diagnosed me instead of selling me surgery. Turned out it was iron — and they fixed it.

P
Priya S.Diagnosis · Queens
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Answers

Common questions about Causes of Hair Loss.

Genetic, DHT-driven pattern loss — but stress, postpartum changes, iron deficiency and thyroid issues are common and often reversible.
It depends on the cause. We diagnose first, then recommend the lightest effective treatment.
Not always — many causes respond to medical or regenerative care. We'll tell you honestly.

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