Why is my hair falling out in the shower?

First, the number that calms most people down: the NHS says losing 50 to 100 hairs a day is normal, often without you noticing. Hairs spend years growing, then enter a resting phase and let go - and shampooing does not pull out healthy hair, it simply collects the resting hairs that were already loose and waiting. So a tangle of strands in the drain is usually your daily quota arriving in one visible batch, which is why wash days look dramatic. The shedding that means something has a different shape. The NHS lists temporary hair loss triggers including illness, stress, weight loss, iron deficiency, and cancer treatment - typically a diffuse increase that starts two to three months after the trigger and settles once it passes. Warning signs that deserve a GP: hair coming out in clumps or patches rather than strands, an itchy or painful scalp, sudden loss, or shedding that keeps increasing month on month. A GP can usually tell the type by looking and can test for iron deficiency and thyroid problems. Practical baseline: be gentle with wet hair (it stretches and snaps more easily), go easy on tight styles and high heat, and eat enough protein and iron. Pymander is a free AI doctor, 24/7 by text, that can help you judge normal shedding from real loss.