Weekly stem cell reads: aging & cells, iPS cell mutations, gut, more

Does aging do something to time so it seems like as you get older that time goes by faster? Remember as a little kid when summer seemed to last forever and car rides could be agonizingly long? I’ve heard two theories on this.

Stem cells aging
Do stem cells change with aging? Guess who this young man is.

One is that the brain’s baseline of activity slows down with aging while the speed of the world’s activities (like the length of a day) remains the same so time seems to be faster.  The other is that we experience time in relation to how much time we’ve lived. So when you’re young a day is a much longer fraction of your entire life’s experiences.

Whatever is going on with our brains and time, it’s clear that time affects individual cells and often not in great ways. More time often equals more mutations. Older cells also tend to not function as well.  Of course, the topic of stem cell anti aging approaches is big both in the legit science world and amongst stem cell clinics. As to the latter, there’s a lot of hooey.

On the research side, there are huge efforts on the stem cell anti-aging front including a Saudi one committing $1B USD a year to it. Altos Labs has a major emphasis on regeneration and anti-aging as well.

Let’s start our recommended reads with the topic of time and cells. But first, see the image of a young guy above from decades ago. Who do you think this could be? It’s not me. See the answer at the bottom of the post.

Aging, mutations, and stem cells

Additional recommended reads

The photo above is of Professor Irv Weissman of Stanford when he was a young man first doing science. Photo courtesy of Irv Weissman found on the Stanford website. You can read my mini-interview of a sort from 11 years ago with Irv on science mentoring.

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