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Yes, low-carb and keto diets may cause temporary hair loss that is primarily driven by rapid weight loss, inadequate protein intake, and sudden nutritional or caloric stress. This condition, known as telogen effluvium, forces hair follicles into a resting and shedding phase.
A low-carb or keto diet may give your body a sudden metabolic shock and disrupt normal hair growth cycles. When you restrict certain food groups completely, it may affect the hair follicles' essential keratin building blocks.
Does Hair Loss Happen with a Ketogenic Diet?
Yes, hair loss can happen after starting a ketogenic diet, but the diet itself is not a direct cause of permanent hair loss. Instead, you may experience temporary hair shedding, usually because of the physiological stress associated with rapid dietary changes, significant weight loss, reduced calorie intake, or nutritional deficiencies.
A ketogenic diet is a very low-carbohydrate, high-fat eating pattern that shifts your body into ketosis, a metabolic state where fat becomes the primary source of energy. Hair fall associated with a ketogenic diet is usually linked to factors that may accompany the diet, such as rapid weight loss, calorie restriction, insufficient protein intake, or deficiencies in key nutrients.
The American Academy of Dermatology also identifies significant weight loss as a potential trigger for temporary hair shedding, regardless of the dietary approach used.
Does Ketosis Itself Cause Hair Loss?
While ketosis itself does not damage hair follicles, the transition to this eating pattern can affect the normal hair growth cycle if your nutritional needs are not adequately met.
If your body experiences nutritional stress during the transition to ketosis, it may trigger telogen effluvium, a temporary form of hair shedding. This occurs when more hair follicles than usual enter the resting (telogen) phase after a physical or metabolic stressor.
Is Keto Hair Loss Temporary?
In most cases, yes. Hair loss associated with a ketogenic diet is temporary, especially when it is caused by telogen effluvium. Unlike permanent forms of hair loss, telogen effluvium does not damage the hair follicles. Once the underlying trigger is addressed, the follicles gradually return to their normal growth cycle, and new hair begins to grow.
Most people notice increased hair fall 2–3 months after starting a ketogenic diet or experiencing rapid weight loss. Hair fall typically lasts 3–6 months, although visible hair regrowth may take several more months because hair grows slowly.
What Is Keto Shedding and Why Does It Happen?
Keto shedding is a term commonly used to describe temporary hair shedding that some people notice after starting a ketogenic diet. Although it is not a medical diagnosis, it most often refers to telogen effluvium, a temporary condition in which more hair follicles than usual enter the resting (telogen) phase and shed a few months after a physical or nutritional stressor.
Keto shedding usually occurs because of the changes associated with starting a ketogenic diet, rather than ketosis itself. Common triggers include rapid weight loss, reduced calorie intake, insufficient protein intake, vitamin and mineral deficiencies, and physiological stress.
Does Hair Loss Happen with a Low-Carb Diet?
Yes, hair loss can occur with a low-carb diet, but it is not caused by reducing carbohydrates alone. Instead, temporary hair shedding is more likely when a low-carb eating plan leads to rapid weight loss, inadequate calorie intake, low protein consumption, or nutrient deficiencies that support healthy hair growth.
Several factors associated with low-carb diets may contribute to temporary hair loss:
- Rapid weight loss: Sudden weight loss triggers telogen effluvium, regardless of the diet used.
- Low protein intake: Hair is primarily made of keratin, a structural protein. Consuming too little protein may affect normal hair growth.
- Nutrient deficiencies: Restricting certain food groups like carbohydrates can reduce your intake of iron, zinc, vitamin D, biotin, selenium, and other nutrients important for healthy hair.
- Excessive calorie restriction: Eating significantly fewer calories than your body needs may temporarily shift energy away from non-essential functions like hair growth.
Is Hair Loss From a Low-Carb Diet Temporary?
Yes, hair loss from a low-carb diet is often temporary, particularly when it is caused by telogen effluvium. This condition develops when a physical or nutritional stressor such as rapid weight loss, a significant calorie deficit, or inadequate intake of protein and essential nutrients causes more hair follicles to enter the resting (telogen) phase before shedding.
Hair shedding related to a low-carb diet typically does not mean that your hair follicles are permanently damaged. Once your body receives adequate nutrition and the underlying trigger is resolved, the hair growth cycle usually returns to normal, allowing new hair to grow.
Keto Nutrition Tips to Prevent Hair Loss
Following a ketogenic diet does not mean you have to compromise your hair health. A well-planned keto diet that provides enough protein, calories, vitamins, and minerals can help support the normal hair growth cycle and reduce the risk of diet-related shedding.
Here are some of the tips that can help you prevent hair loss while being on a low-carb or keto diet:
|
Nutrition Tip |
What to Eat or Do |
|
Eat enough protein |
Eggs, chicken, turkey, fish, tofu, paneer, Greek yoghurt |
|
Avoid crash dieting |
Follow a moderate calorie deficit instead of very low-calorie diets |
|
Increase iron intake |
Lean red meat, liver, spinach |
|
Get enough zinc |
Beef, shellfish, pumpkin seeds |
|
Maintain vitamin D levels |
Fatty fish, egg yolks, fortified foods |
|
Include selenium & biotin |
Brazil nuts (in moderation), eggs, mushrooms, almonds |
|
Eat omega-3-rich foods |
Salmon, sardines, mackerel, walnuts |
|
Stay hydrated |
Drink enough water throughout the day |
|
Lose weight gradually |
Aim for slow, sustainable weight loss |
|
Check for deficiencies |
Speak to a dermatologist if hair fall continues |
Traya’s Perspective on Keto Diet Hair Loss
Following a ketogenic or low-carb diet does not automatically mean you will experience hair loss. In many cases, temporary hair shedding is triggered by rapid weight loss, inadequate protein intake, or nutritional deficiencies, rather than ketosis itself.
At Traya, we believe that instead of stopping a ketogenic diet immediately, you should focus on building a nutritionally balanced eating plan that provides enough protein, healthy fats, vitamins, and minerals to support both your overall health and your hair. The Traya Hair Test identifies all your hair concerns and provides a personalised kit that suits you.
References
- https://pubmed.ncbi.nlm.nih.gov/23682615/
- https://pubmed.ncbi.nlm.nih.gov/27659896/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC7432488/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC5715231/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC10993087/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC4932669/
- https://www.aad.org/public/everyday-care/skin-care-secrets/routine/pregnancy-skin-care
- https://www.aad.org/public/diseases/hair-loss/insider/stop-damage
- https://www.nhs.uk/best-start-in-life/pregnancy/week-by-week-guide-to-pregnancy/2nd-trimester/week-15/
- https://www.nhs.uk/pregnancy/complications/itching-and-intrahepatic-cholestasis/
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