Greying hair, also known as canities, is the natural process of hair losing its pigment and turning grey or white. It occurs due to a gradual reduction in melanin production, the pigment responsible for hair colour. While greying is typical for ageing, it can also occur prematurely due to various factors.
Several factors contribute to the development of greying hair, including:
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This type of greying occurs as part of the ageing process and is influenced by genetic factors. It typically starts around middle age and progresses gradually over time.
Premature greying refers to the onset of grey hair while being young. Genetic predisposition, environmental factors, or underlying health conditions can cause it.
While it's impossible to reverse natural greying, specific treatments and lifestyle modifications may help slow the growth of greying hair and improve its appearance.
Some natural remedies, such as using herbal extracts like curry leaves or applying onion juice to the scalp, promote melanin production and slow down greying. However, their efficacy varies, and more research is needed to support their use.
Chronic stress can contribute to premature greying by increasing oxidative stress and inflammation, damaging melanocytes and disrupting melanin production.
Nutritional deficiencies, particularly of vitamins B12, folate, copper, and iron, can affect melanin synthesis and contribute to premature greying. Ensuring adequate intake of these nutrients through diet or supplements may help support hair health.
Greying hair is a natural part of the ageing process and can occur in people of all ethnicities. However, the onset and progression of greying may vary between ethnic groups due to genetic factors and other influences.