Why we can’t live forever: understanding the mechanisms of ageing

Video Why We Can’t Live Forever Old age is a combination of many processes that work together to produce the signs and symptoms we call “getting old.” Of course, there’s no way to stop the aging process, but better understanding the different mechanisms of aging can help us slow it down and enjoy better health over the years. – Whether amnesia or full of hair. When we look in the mirror, many of the features that we identify as “old” are simply a threshold. Although the time it takes to reach any arbitrary threshold can be considered “aging,” many other factors can shorten or prolong this time.

White hair

Hair ages gray when the cells that make hair pigment are damaged. By the age of 50, half of the hair follicles in half of men have lost their pigment. However, aging is not the only factor involved; Smoking, sun exposure, inflammation, stress and other factors all act on hair to shorten the time it takes for gray hair to take over. This is how we can age faster, as it takes less aging time to reach the point when all the black hairs are gone. if we never change our aging rate. Therefore, slowing down the aging process does not mean that time stops, but rather moves away from the boundaries so that time is no longer the enemy.

Injuries and mileage

With aging comes more trauma. As Indiana Jones once quipped about his lack of stamina, “It’s not the year, honey, it’s the way.” The human body accumulates numerous “natural shocks” throughout life, which ultimately threaten its integrity and are the basis of many of the phenomena we recognize as aging. Read more: Why do women eat cornstarch A good example is damage to the genetic code, known as a “mutation”. These errors become more common and severe as the sequence is copied and reopened over and over again, and they can eventually change the way the cell functions. All cells need stimulation for healthy growth and functioning. Hearing or vision loss, for example, seems to accelerate when people are not stimulated. seems to slow down.

Body Repair

Certain parts of the body may be more susceptible to aging because they have a limited ability to repair. The other parts hold up well, at least initially. But as we age, these repair mechanisms can become less effective, so any stress is likely to become more damaging. The appearance of aging can be a physical manifestation of these offsets, like canes or hearing aids. These offsets are also evident in aging bodies, such as an aging heart that adapts – getting bigger and contracting longer to maintain function despite the extra demands of stiff vessels. The atria also work harder and faster to fill the heart. This enhanced atrial contraction can sometimes be heard as a fourth heart sound (called a “gallop”) if you listen with a stethoscope in an elderly patient.

Can we live forever?

Our designs are not compatible with indefinite existence. As is the case with a toaster, its lifespan is very limited. Given the reliability of the parts, some toasters will outlast others, even though they do roughly the same job. But in the end, one morning, your toast just won’t bloom. We have an additional portion of specialized (post-mitotic) cells that have a very limited or no ability to divide. These include the nerve cells of the brain, the beating muscle of the heart, and the insulin-producing cells of the pancreas. They are not replaceable, which is why the effects of aging may be more significant and evident in these cells and the functions they serve. You can slow the signs of aging with physical and mental activity, but you can’t prevent them completely. funadium

Is aging a disease?

In the minds of most people, getting older means more diseases. But it’s not like that, for example our bones. From about 20 years old, our bones become thinner and thinner. At some point, bone loss becomes so severe that its integrity is compromised, leading to an increased risk of fracture. This point (or disease) is known as osteoporosis, and although bone loss is not separate from the aging process, it is not the same. Several other factors (such as smoking and inactivity) can also contribute to bone loss and thus osteoporosis (disease). Aging only brings you closer to the edge in a way that makes it easier for other factors to push you and cause disease. Similarly, preventing disease can slow the effects of aging.

Aging is the totality of life

In the end, aging is not a single factor but a combination of many factors: some harmful, some protective. In youth, these forces are kept in equilibrium. But over time, trauma accumulates and memories of its effects. lifestyle. Plan a long ride home.This is an edited version of an article appearing in the latest issue of Perspectives, an opinion-led journal published by the Baker IDI Heart and Diabetes Institute.Read more: Why hope is suicidal in jessica jones

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