Five myths about reversing grey hair you need to stop believing
Dr Jagadish Hiremath, public health intellectual, tells indianexpress.com, 'With countless claims circulating online about reversing grey hair naturally, it is crucial to approach such information critically.'
Can grey hair truly be reversed naturally, or are these claims largely unfounded?
'The reversal of grey hair is highly unlikely in most cases,' notes Dr Hiremath. Grey hair results from the depletion of melanocytes, the cells responsible for producing melanin, which gives hair its colour. As melanin production decreases due to aging or genetic factors, hair loses its pigmentation. This process is considered irreversible under normal circumstances.
However, there are exceptions, as stated by Dr Hiremath:
Reversible Causes: Grey hair caused by stress, nutritional deficiencies, or illness can sometimes regain pigmentation if the underlying issue is resolved. For instance, a study published in eLife (2021) showed that removing chronic stress partially restored pigment in some individuals' hair.
Permanent Greying: Age-related or genetic greying involves irreversible damage to melanocyte stem cells, making natural reversal impossible.
'The biology of hair greying underscores its permanence in most cases, as melanocyte depletion is rarely reversible,' the doctor highlights.
Some myths regarding reversing grey hair online
Dr Hiremath describes the myths regarding reversing grey hair that he has come across online:
Myth 1: Onion juice can reverse greying
Debunked: There is no credible evidence supporting the idea that onion juice can restore melanin production. A review in Dermatology Practical & Conceptual (2020) highlights that onion juice has no proven effect on pigmentation.
Myth 2: Coconut oil and lemon juice can restore hair colour
Debunked: While these may condition hair, there is no biochemical pathway linking coconut oil or lemon juice to melanin restoration.
There is no credible evidence supporting the idea that onion juice can restore melanin production. (Source: Freepik)
Myth 3: Collagen supplements prevent greying
Debunked: While collagen supports hair structure, it does not influence melanin production or reverse greying. Claims suggesting otherwise lack scientific backing.
Myth 4: Avoiding shampoo prevents greying
Debunked: Shampoo has no impact on the melanocytes in hair follicles. This is misinformation spread by influencers promoting 'natural' lifestyles.
Myth 5: Eating certain herbs restores hair pigment
Debunked: No herb has been proven to regenerate melanocytes. Claims around 'miracle herbs' are anecdotal and unverified.
Dietary changes or supplements that have a significant impact on grey hair
While diet can support hair health, Dr Hiremath stresses that reversing greying isn't possible through food or supplements. However, certain nutrients may delay its progression, he says:
Vitamin B12: Supports melanin production, found in meat, fish, eggs, and fortified cereals.
Copper: Essential for melanocyte function, found in nuts, seeds, and shellfish.
Antioxidants: Combat oxidative stress, found in berries, green tea, and spinach.
Iron: Supports hair pigmentation, found in lentils, red meat, and leafy greens.
Zinc: Supports hair follicle health, found in nuts, seeds, and seafood.
Caution against misinformation: Dr Hiremath asserts, 'Many social media influencers promote false claims about reversing grey hair, leading to wasted time and money. Rely on peer-reviewed research and accredited professionals instead of unverified miracle cures. Greying is natural, driven by genetics and age, and while stress or deficiencies may accelerate it, no solution can fully reverse it. Prioritise a healthy lifestyle and credible scientific advice.'
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