The Science of getting old

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WHY WE AGE:

Eventually the cells in our bodies become less equipped to repair and replicate themselves.

  • This process of senescence is the basis of aging.

Scientists believe senescence is an irreversible step in the lives of cells. What is not known is why this happens in the first place.

  • One Theory is that senescence of cells developed to prevent the uncontrollable growth of cells in old age; we known this as cancer.

WHY HAIR TURNS GRAY:

  • Melanin, the pigment that gives your hair its color, becomes exhausted at some point, which is different for each person. Genetics and stress both play a huge role.

WHY SKIN WRINKLES:

  • Collagen is what gives youthful skin its luster and supple feeling. When you turn 20, your body produces about 1 percent less collagen every year. The cumulative effect after a number of years is that the skim becomes thinner, fragile and more susceptible to the ravages of gravity.

WHY WE FORGET THINGS:

Minor declines in memory and mental abilities most likely occur because the brain, like many parts of the body, change as we age.

  • Certain parts of the brain shrink and the ability of neurons to communicate effectively with each other decline.

WHY WE GET SHORTER:

The disks between the bones in our spines become compressed over time. This causes the vertebrate to press closer together, meaning we become shorter.

WHY WE CAN’T SEE AS WELL:

After age 40, most of us will have a hard time focusing on objects up close. You can thank the hardening of the surface of your eye’s lens.

There are several organizations that are doing everything they can to not only understand aging, but to fight it or even reverse it!  They are all taking different approaches from studying the genetics to figuring out how to combine software and live as a high-tech form.  Here are a few of those organizations:

  • Methuselah Foundation

  • Calico

  • Human Longevity Inc.

  • Terasem Movement, Inc.

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Source:

https://visual.ly/community/infographic/health/science-getting-old

 

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