DHT & Genetic Hair Loss Risk Quiz

Why genetics from both parents actually matters

A persistent myth holds that hair loss only comes from the mother's side. This isn't accurate — genetic pattern hair loss (androgenetic alopecia) is polygenic, meaning multiple genes from both parents contribute, not a single gene on one side. See our DHT explainer for the biological mechanism this quiz is built around. This is exactly why the quiz asks about relatives on both your father's and mother's side separately, and why having affected relatives on both sides compounds the overall risk signal rather than one side simply overriding the other.

Why age of onset in relatives matters

Earlier onset in affected family members is generally associated with a stronger genetic loading overall — families where hair loss tends to start in the 20s often show a more pronounced hereditary pattern than families where it typically doesn't appear until the mid-30s or later. This is a meaningful, though not absolute, signal worth factoring in alongside which specific relatives are affected.

What a strong genetic signal means practically

A strong signal doesn't mean hair loss is certain or that treatment won't work — genetic predisposition affects likelihood and typical severity, not a fixed, unchangeable outcome. It does mean that if you start noticing any early signs (see our hair loss in your 20s guide if that applies), acting on them sooner rather than waiting tends to produce meaningfully better long-term results than a "wait and see" approach, given how predictably genetic pattern loss tends to progress once it starts.

What this quiz can't tell you

It cannot examine your own scalp, confirm you will experience hair loss, or rule out non-genetic causes affecting you right now. It's a family-history mapping tool, not a diagnosis of your current hair. For that, see our full diagnostic quiz or try the broader hair loss risk calculator, which combines genetic and lifestyle factors together.

Frequently asked questions

Q: My family history is unclear — what should I do?
A: It's common not to know everyone's history in detail, especially on one side of the family. Answer with what you genuinely know, and treat the result as a partial picture rather than a complete one.

Q: Does having no family history mean I'm safe from hair loss?
A: Not entirely — spontaneous genetic variation and non-genetic causes (stress, nutrition, thyroid issues) can still cause hair loss even without a known family pattern, though the statistical likelihood is lower.

Q: Should women use this quiz too?
A: Yes — the same genetic principles apply, though female pattern hair loss (see our dedicated guide) often involves additional hormonal factors beyond genetics alone, like PCOS or menopause.