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Your Nails May Hide a Secret About Your Longevity! Harvard Researchers Have Discovered That the Growth Rate of Nails Is Directly Related to Biological Aging.
Human longevity is one of the most debated topics in modern science.
Researchers investigate different factors that influence aging and seek patterns in the human body that may indicate an individual’s overall health.
Among the various signs analyzed, one curious detail caught the scientists’ attention: the growth rate of nails. But what does this really mean?
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According to a study published by the University of Harvard, the rate of nail growth may be linked to a person’s biological age.
Geneticist David Sinclair, a specialist in longevity, pointed out that nails that grow quickly may indicate good overall health, while slow growth may be related to nutritional deficiencies or a slowed metabolism, two factors that influence the aging process.
What Science Has Discovered About Nail Growth?
Researchers at Harvard analyzed various aspects of the human body and identified a relationship between the reduction of the nail growth rate and aging.
A study published in the Journal of Investigative Dermatology revealed that, after the age of 30, nails begin to grow about 0.5% slower each year.
Over time, this can lead to nails that are more fragile and prone to breaks.
Sinclair himself revealed that he often observes his nails as a personal method of health monitoring:
“I pay attention to see if my nails are growing more slowly or not. Every time I need to cut them, I think: ‘How long has it been since I cut my nails?’”
Why May Nails Indicate Health Problems?
Nails are composed of keratin, a hardened protein, and are highly dependent on blood circulation to stay healthy.
As we age, blood flow may decrease, impairing the distribution of essential nutrients.
Dermatologist Lysa Nyanda-Manalo warns that changes in the structure of nails may be signs of nutritional deficiency, hormonal issues, or underlying diseases. According to her:
“It is essential that when patients notice changes in their nails, they seek a dermatologist who can identify a more serious problem”.
What Can Weaken Nails?
Various external and internal factors can affect the health of nails. Among the main ones are:
- Lack of essential nutrients, such as biotin, iron, and zinc
- Excessive use of chemical products, such as nail polish removers and detergents
- Presence of fungi, which can cause stains and weaken
- Habits like nail biting, which can damage the structure
- Constant exposure to moisture, which can dry out and weaken the nails
The dermatologist herself emphasizes that frequently washing hands or keeping nails in prolonged contact with water can cause dryness and make them brittle:
“If you keep your hands wet for a long time (like when washing dishes), it removes the moisture or the natural oils present in the skin and nails, allowing them to dry out and become a bit more brittle”.
How to Keep Nails Healthy?
To avoid problems, experts recommend some practices to keep nails strong and healthy:
- Maintain a balanced diet with essential vitamins and minerals
- Avoid excessive use of nail polish removers and harsh chemical products
- Moisturize nails and cuticles regularly with natural oils
- Clip and file nails regularly to prevent breaks
- Consult a dermatologist upon noticing unusual changes
The Harvard study does not suggest that the speed of nail growth is a determining factor for predicting longevity, but indicates that it can be a good indicator of overall health.
Therefore, paying attention to changes in this aspect may help identify problems early.
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