By the time patients present, how much hair density have they often lost?

McCall McPhersonFounder, Modern Thyroid Clinic.

Why Early Action Is Crucial for Hair Health #shorts

23 Oct 2025 · 1 min

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1:08

McCall McPherson talks to a clinician about why you can't wait on hair loss. Once follicles go dormant, they're nearly impossible to wake up. By the time most people seek help, they've already lost half their hair density, and thinning often signals deeper problems like insulin resistance or iron deficiency.

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And I love the idea of working on things to stimulate the follicles, because that's the whole end game, right? Is to keep those hair follicles healthy, vibrant, functioning. Because once they go dormant, it becomes pretty hard to reactivate them over time. Right?
And a lot of the time, by the time a patient comes to me, they've already lost 50% of their hair density. So it is something that's quite significant for them. And it doesn't matter if your hair still looks good, because I have a lot of patients that will come to me saying, I know my hair looks fine, but this is not what it was. And they're like, I'll show you pictures. I believe you. Like, if you feel that you're losing more hair and you're losing that density, then it's worth investigating, because let's say it is insulin resistance that increases your risk of prediabetes and diabetes, Alzheimer's and dementia, cardiovascular disease, that's not a small cosmetic thing, Right? And even iron deficiency, your risk of not being able to focus, having concerns with your mental health, that's a huge impact of your quality of life. So these are things that are really important to address.