Louis Theroux gave a positive health update on his alopecia in a clip shared to Instagram on Thursday, revealing he was 'bouncing back' and seeing regrowth a year after hitting bottom. His hair was at its worst point in 2025. Five years after his alopecia started, Louis Theroux and his scalp have been enjoying some bounce-back with regrowth in several major areas.
Theroux first started to battle alopecia as early as 2021, and he has been diagnosed with an autoimmune disease that leads to hair falling out in patches. Theroux was prompted to give an update after Netflix viewers noticed changes in his hair while watching his latest Manosphere documentary, which he filmed last year. His Manosphere documentary investigates a growing ultra-masculine network and its controversial influencers.
It [his hair] is quite weird in parts of it, especially the back, when I enter buildings a couple of times, you can see it is quite patchy.
The Manosphere refers to an online network that promotes anti-feminist beliefs and masculinity. Theroux has made no interventions, taken no drugs, not changed his diet, and does not feel less or more stressed regarding his alopecia improvement. He does not take any medication nor is careful with his diet.
Theroux attributes his hair regrowth to the vague mysteries of life and the human condition. The specific autoimmune disease he has been diagnosed with remains unknown, and it is unclear whether he has consulted medical professionals about his hair regrowth. The exact medical cause or trigger for his alopecia improvement is not specified, and the current extent or percentage of his hair regrowth has not been detailed.
So I filmed that documentary last year, and that was my hair I think at its lowest depth of the two.
The good news is that my hair seems to be growing back. Not all of it, but much of it. It is better than it was.
So it is more than a year, or about a year in fact, since I last updated you about alopecia. This condition that I have been diagnosed with, an autoimmune disease, leads to your hair falling out in patches or your lesions, as they are called, and this is me saying, surprise, surprise, it seems to have gotten better.
What have I done? nothing. I have made no interventions, I have taken no drugs, I haven't changed my diet, I don't feel like I am less stressed or more stressed.
I am just going to put it down to the vague mysteries of life and the human condition.
I am grateful that it is better. I take nothing for granted, I am pleased I have hair, I can see the sides and even in the back... you can see a little bit there, Still a bit funny.
So there are bigger things in the world than this I realise, but some of you may have alopecia and it is stressful and some of you may have questions about my alopecia, so I hope I have answered some of them.
A year ago, almost to the week, I posted about my alopecia… Starting in 2021 my beard started falling out, then my eyebrows, then patches appeared in my hair.
So here we are five years later, and after hitting bottom in 2025 me and my scalp have been enjoying some bounce-back! Regrowth in several major areas! I don’t know what to put it down to. I don’t take any medication. Nor am I careful with my diet. Anyway, I’m very grateful. I like having hair.