Questions tagged [aging]

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Study: "going from 0 to 1 daily alcohol unit is equal to 0.5 years of aging". Over what period? It's unclear from the text

From "More alcohol, less brain: Study finds an association that begins with an average of just one drink a day", a news report: To give a sense of the impact, the researchers compared the ...
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To what extent do UV-A, UV-B and UV-C exposure account for visible signs of aging in the skin? I'm looking for a breakdown between UV-A, UV-B and UV-C

Several studies indicate that UV exposure account for between 80% to 90% of visible signs of aging in the skin. E.g., from {1}: UV exposure may account for up to 80% of visible signs of aging in the ...
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Is it possible lengthen telomeres or increase the Hayflick limit in humans?

Human cells cease division when the telomeres shorten to a critical length. The number of possible cell divisions is usually between 40 and 60 in humans (This is called the Hayflick limit). There is ...
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How dangerous for the human skin are naturally occurring wavelengths above 380nm?

I read on https://www.cancer.org/cancer/cancer-causes/radiation-exposure/uv-radiation.html: UVA rays have the least energy among UV rays. These rays can cause skin cells to age and can cause some ...
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Best healthy lifestyle habits to reach old age with optimal health? [closed]

What are the best healthy lifestyle habits one should cultivate from very early age and throughout one's life in order to reach old age (e.g. 70s/80s) with optimal health?
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Do bearded faces age slower?

Recent research indicates that UV exposure may be responsible for around 80% of facial skin aging symptoms. The more unprotected exposure from the sun, the more the skin ages. Does the evidence show ...
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Authoritative Source on Sleep Requirement

What is the hours of sleep required for someone over 70. My Dads Dr (Internal Medicine) said at least 5 hours, yet Internet sites say 7 to 8. Which Internet site is authoritative source for sleep ...
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My grey / white hairs disappeared - in some sense, is aging reversible? [closed]

I accumulated less than a handful of grey / white hairs during some stressful days in graduate school. I looked in the mirror often and couldn't believe that I was "aging". Now, having finished with ...
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Downward Double-Vision

If I focus on the ring in this image (the ring is 1 cm tall on my monitor, I stand 300 cm away, the room is dark, and I cover one eye), I actually see an "8" formed from double-vision where the lower ...
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Is there a syndrome which causes a child's body not to "age"?

I'm hoping this is an appropriate question for this stack group. For several years I've been playing with a plot for a novel whose protagonist is a woman whose body does not seem to age. Science ...
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Do people from sunnier parts of the world show accelerated aging?

A lot of medical evidence seems to point to there being a link between sun exposure and skin aging. Would this mean that on average, a 30-year-old from Arizona would have more wrinkles and uneven skin ...
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Do big people age faster?

I learned that age is mutations across cells that become more common as you get older. Since a bigger person uses more calories and their cells die and are renewed more often, does that mean they have ...
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Can fasting destroy our adaptive immune system?

Fasting for 72 hours been shown to lead to white blood cell regeneration (1). The cells basically die after several days, and are created again from stem cells upon feeding. This article describes how ...
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Face Exercises - Facial Yoga, Pilates, Etc - Does It Work?

I would like to get some feedback on anybody that has some insight and/or experience in this area. I am thinking of purchasing some books on Facial Exercise - 'Facial Yoga' to be precise. Essentially ...
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2 votes
2 answers
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Do all very old people have heart failure?

A 95 year old will probably not be able to do hard exercise, such as running fast for one hour per day. The heart of such a person won't have the capacity to pump the required amount of blood through ...
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Are there ways to prevent or slow down the development of white hair?

I am caucasian man. I am 32 years old. In the last times, a lot of white hairs have appeared in my head. I know this is not a serious health problem, but it makes me feeling older than actual I am. I ...
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Is it worth testing regularly for oxidative stress?

I have read that oxidative stress is associated with neurodegenerative diseases, cardiovascular disease, ageing, cancer, and diabetes. Popular health 'buzz' would suggest consuming antioxidant ...
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11 votes
1 answer
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Does being optimistic help me to age more slowly?

I read an article that says that the superyoung (people who look at least 10 years younger than they are) are really optimistic and happy people. Is this true? Is there any cause and effect ...
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8 votes
1 answer
287 views

Long-term effects of lens removal as the vitreous ages?

In a case of pediatric cataract surgery where the lens was not replaced, there is no lens to serve as a barrier between the aqueous and the vitreous. I once asked an ophthalmologist what keeps them ...
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4 votes
1 answer
365 views

Why do tendons become less flexible with age?

This page from the Mayo Foundation for Medical Education and Research says: Your tendons become less flexible with age, so tendinitis is more common as you get older. Why do tendons become less ...
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18 votes
2 answers
26k views

Will eye floaters ever disappear?

According to wikipedia on eye floaters: Floaters are often caused by the normal aging process and will usually disappear as the brain learns to ignore them. Even if this might be the case for very ...
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