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You need to consume around 0.8 g of protein per kilogram of body weight daily, although requirements for children, older adults, and physically active individuals may vary. Meeting your daily protein requirements supports normal hair growth and overall hair health.
You need protein for healthy hair as it is primarily made of a structural protein called keratin. If your daily protein requirements aren't met, the body prioritises vital organ functioning over hair growth. This may contribute to increased hair fall over time.
What Is the Role of Protein in Hair Growth?
Hair follicles are among the most metabolically active tissues in the body, so they require a continuous supply of protein to support normal hair growth and maintain strong, healthy strands. Protein provides the amino acids your body needs to produce keratin, the structural protein that makes up most of your hair shaft.
How Does Protein Support Healthy Hair?
Adequate protein intake helps hair follicles sustain the normal hair growth cycle by providing the nutrients needed for continuous hair fibre production. When your protein intake meets your body's needs, new hair strands are more likely to grow with normal strength and structure, reducing the risk of weak, brittle hair caused by nutritional deficiency.
Getting enough protein is essential for normal hair growth; however, it cannot reverse hair loss caused by genetics, hormonal imbalances or certain medical conditions. Alongside protein, other nutrients such as iron, zinc, biotin and vitamins are essential to support healthy hair.
Can Protein Deficiency Cause Hair Loss?
Yes, protein deficiency can contribute to hair loss, although it is not a common cause in people who eat a balanced diet. When you have a protein deficiency, more hair follicles are prematurely pushed into the resting (telogen) phase. This leads to increased hair fall, a temporary hair shedding condition known as telogen effluvium.
If you experience hair loss, it can be due to various factors such as genetics, hormonal changes, stress, medical conditions, or certain medications rather than low protein intake alone. It is recommended to keep track of protein intake and get advice from your doctor to understand the root cause of your hair fall.
How Much Protein Do You Need for Healthy Hair?
According to Harvard Health, the Recommended Dietary Allowance (RDA) for healthy adults is 0.8 g of protein per kilogram of body weight (0.36 g/lb) per day. This amount is intended to meet the body's basic nutritional needs and help prevent protein deficiency, rather than maximise protein intake.
While there is no separate daily quota for hair growth, a doctor or clinical dietitian may adjust your overall protein intake based on your activity level, age, or underlying health needs. Here's a brief overview of how much protein you should be consuming to meet your body's needs and support overall hair health.
|
Group |
Recommended Daily Protein Intake* |
|
Adults (19–64 years), sedentary |
0.8 g/kg body weight |
|
Adults who exercise regularly |
1.0 to 1.2 g/kg body weight |
|
Endurance athletes |
1.2 to 1.4 g/kg body weight |
|
Strength or resistance training |
1.2 to 2.0 g/kg body weight |
|
Adults over 65 years |
1.0 to 1.2 g/kg body weight |
|
Pregnant women |
1.1 g/kg body weight |
|
Breastfeeding women |
1.3 g/kg body weight |
Note: These values are based on general protein recommendations for healthy individuals. There is no separate Recommended Dietary Allowance (RDA) for hair growth. If you have any health conditions, are pregnant, planning to conceive, or breastfeeding, you should consult your doctor to plan your protein requirements. Planning your protein intake without expert advice is not recommended.
Best Protein-Rich Foods for Hair Growth
Including a variety of protein-rich foods in your daily diet helps you meet your protein requirements and provides the amino acids needed for normal hair growth. Choose both animal- and plant-based protein sources as part of a balanced diet.
- Eggs: One of the best sources of high-quality protein. 2 large eggs contain approximately 12-13 grams of protein. Eggs also provide sulphur-containing amino acids that help your body produce keratin.
- Chicken and fish: Lean animal proteins that supply all the essential amino acids needed to support healthy hair. 100 grams of chicken breast contain around 31 grams of protein, and 100 grams of fish contain around 20 to 25 grams of protein, which may vary based on the type of fish you prefer.
- Paneer, milk and Greek yoghurt: Dairy foods are rich in complete protein and are easy ways to increase your daily protein intake. You get approximately 18 to 20 grams of protein from either 200 grams of Greek yoghurt or 100 grams of paneer.
- Soybeans, tofu and tempeh: Excellent plant-based protein sources that contain all essential amino acids, making them ideal for vegetarians. 100 grams of cooked soyabeans give you 16 to 18 grams of protein.
- Lentils, chickpeas and other legumes: Good sources of plant protein that also provide iron and folate, nutrients important for overall hair health. 1 cup of lentils gives you 18 grams of protein, and a cup of chickpeas can give you 14 to 15 grams of protein.
- Nuts and seeds: Almonds, peanuts, pumpkin seeds and sunflower seeds contribute protein along with healthy fats, vitamin E and minerals that support scalp health. 30 grams of almonds or peanuts have approximately 6 to 8 grams of protein.
Nutritional Tip: Aim to include a source of protein with each meal instead of consuming most of it in one sitting. This can help you meet your daily protein requirement more consistently.
Traya’s Perspective on Protein for Hair Growth
Protein plays an important role in maintaining healthy hair as it helps support normal hair growth. At Traya, we believe that effective hair care requires identifying the root cause of your hair issues and following a complete care ritual rather than relying on a single nutrient or dietary change.
A personalised treatment plan that combines the right nutrition, lifestyle modifications, and evidence-based hair care can help support healthier hair growth over time. The Traya Hair Test identifies all the root causes and offers personalised kits catered to your hair needs.
Frequently Asked Questions
1. Is protein good for hair growth?
Yes, dietary protein is vital for hair growth because your hair strands are made almost entirely of a protein called keratin. You need to include protein, along with other essential nutrients, in your meals and spread intake throughout the day.
2. Does eating more protein make hair grow faster?
Meeting your daily protein requirements supports normal hair growth, but consuming more protein than your body needs does not make hair grow faster.
3. Can vegetarians get enough protein for healthy hair?
Yes, vegetarians can easily get enough protein for healthy hair by eating lentils, tofu, paneer, chickpeas, soyabeans, yoghurt, and milk.
4. How can you tell if you're not getting enough protein?
Signs of low protein intake include experiencing persistent fatigue, muscle loss, hair thinning, and brittle nails. Chronic deficiency often leads to a weakened immune system, lingering soreness after workouts, and slow wound healing.
5. How to include enough protein in your hair growth diet?
Including enough protein for hair growth means eating at least 0.8 grams of protein per kilogram of body weight daily as a baseline minimum. Your requirements might differ based on age, health levels, and nutritional deficiencies, and you can follow that if your doctor or nutritionist recommends it.
References
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8647708/
- https://www.health.harvard.edu/blog/how-much-protein-do-you-need-every-day-201506188096
- https://www.mdanderson.org/cancerwise/how-much-protein-do-i-need-a-dietitian-answers.h00-159781179.html
- https://pmc.ncbi.nlm.nih.gov/articles/PMC5315033/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC6434747/
- https://www.ncbi.nlm.nih.gov/books/NBK430848/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC9650738/
- https://public.iadvl.org/diet-for-healthy-hair
-
https://www.health.harvard.edu/skin-and-hair-health/can-insufficient-protein-intake-cause-hair-loss
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