Does Low Carb/Keto eating make your hair fall out?

hair loss, keto, low carb


So I went to a new hairdresser last week, my last one is great but is a 40 min drive away and in Brisbane traffic, it ends up being an hour and a half round trip! The new one is 5 mins away, so it was worth a shot.

However I’m always a bit apprehensive trying a new one as you get to know your hairdressers, they become like friends – so it’s always… Will you like them? Will they like you? Do they do a good job? Do you like the salon and the rest of the crew? Does it all smell like chemicals in there? Do they leave you alone or talk too much? Does it cost 4 times more than you thought it would?

But I needn’t have worried, they were lovely and we got to talking about the low carb diet (as I tend to do, I can’t help myself.) And she said that she only went on it for about 3 months and while she did lose weight, being in the hairdressing game, she did notice her hair become considerably thinner in that short time. Her cousin though had been low carbing for longer and lost at least half the volume of her hair.

As I’ve mentioned before, it happened to me – I had visited my old Gold Coast hairdresser and she was shocked at how thin my hair had become. You could see tufts of it growing back along my hairline.

And on Instagram, a lovely lady I follow, Simmy Tan, who has now shifted to Ray Peat style of eating after years of dieting, showed a photo of considerable bald patches forming on her head.


(Her subsequent recovery is a great story to follow!)

A quick look on the net reveals it has happened to loads of people on low carb with the explanation being that it is a response caused by metabolic or hormonal stress in the body. With some saying “don’t worry, stay on the diet, it grows back!”

Are you kidding me?

Keep eating in a way that stresses and damages your body, just for the sake of weight loss? The thinning hair is just one clue as to what is going on inside your body and it gets much worse than that!

So I wanted to write this because I still see everywhere – the recommendations for a low carb diet, (example above is a case in point – your body is falling apart but keep going!) Even the medical industry is getting in on the act now recommending it and it is becoming mainstream.

The seduction of it is obvious – it works quite quickly in terms of weight loss, so the majority of people who are after the quick fix are happy. It even seems to improve people’s health markers like cholesterol levels, blood pressure and blood sugar levels; at the beginning anyway. But is there any research for long-term effects? Because remember it took 10 years before my body went haywire and all these things start to happen. (Read more here.)

I haven’t seen any long-term research and so all we have, is people like myself, the others listed above, even some of those who write about this now like Kate Deering and Cheryl Frost, who have all felt the negative consequences of low carbing for some years. All of us went off in a different direction to find answers because at some point it stopped working and we all felt like crap.

So here’s the main takeaway of my rant this week –

The pursuit of weight loss should never be at the expense of your health.

When I went down the Low Carb path, I had no idea it could potentially damage my health – no one promoting low carb ever says it or warns you about it even now. So having lived it for 10 years, here is my warning – approach with caution. Do what you want to do, but educate yourself and just be aware; a low carb diet is stressful for the body.

Instead of giving the body the exact fuel it needs in the form it needs it – that is easily digestible simple sugars – as glucose is the fuel for all cells, we are forcing it to have to work really hard to convert fats and proteins down into glucose to feed the cells.

It does it to a smaller extent all the time anyway, but in low carb/keto eating you are forcing it to do it all the time, to convert all of your fuel requirements and that’s a hard slog. And worse still, it sometimes also breaks down your body tissue – muscles, organs etc to get the glucose it needs. (Bye bye hard earned muscles!)

So if you are still low carbing, listen to your body and if you start to notice any of these symptoms…

  • low pulse rate – below 70 bpm
  • low body temperature – below 36.6 C waking temp
  • thinning hair
  • constipation
  • dry skin
  • cold hands and feet
  • cold most of the time
  • thin eyebrows on outer half
  • fatigue
  • puffy face
  • brain fog
  • weight gain, and more…

…take action immediately because your thyroid is taking a hammering and you could do permanent damage.

This is why I, and the others I have been reading about, are moving to a more nourishing way to eat, that supports hormones and leads to optimal health. I’m not sure if we’ve all worked it out perfectly yet, but we’re working on it!



Kristy x

2 thoughts on “Does Low Carb/Keto eating make your hair fall out?

  1. Pingback: Kayla Itsines – BBG – thinning hair & stretch marks | Slim birdy

  2. Pingback: Dr Ray Peat beginners guide to high metabolic eating & exercise | Slim birdy

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