Recent comments in /f/explainlikeimfive

GrumpyOldLadyTech t1_iugn960 wrote

I do my best! Just make sure you're not tinkering too much with your molecules, and you should be fine. Things like smoking, drinking, unnecessary hormones or supplements beyond reasonable amounts (ask your doctor if you're unsure), chronic inflammation and poor diet can really do a number on a molecular level - so drink water, eat fresh balanced nutrition from varied sources, get plenty of fiber (you wanna keep your gut flora happy if you want everything else to be happy!) and stay low on inflammation-inducing foods, and your DNA will thank you.

Oh, side note! Pay attention to your stress levels. I'm not talking physical workout stress, I mean brain and trauma type stress. High chronic levels of cortisol can really do a number on your telomeres!

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Floturbular t1_iugmkjv wrote

That’s true, but those guys tend to build unnatural amounts of muscle through anabolic steroids and hormone treatments like TRT. This puts more muscle on the frame than the body is designed for, and combined with heavy training leads to faster aging and often heart conditions or other cardio-vascular issues. For the average person who is simply muscular and strong in a natural way, these are not relevant people to look at.

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aus_ben93 OP t1_iuglodp wrote

That’s a great point, hoping someone can explain it a bit further. Im curious is could Jack have lived past 100 without the weightlifting?

Thanks for sharing though. This was my question as guys like Steve reeves and reg park and all these body builders seem to pass early.

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lsc84 t1_iuglagk wrote

Professional football players and boxers have a 100% chance of suffering traumatic brain injury during their careers (literally--a study of the brains of deceased football players showed that all of them had CTE). They still do it. Money, fame, glory, the belief in young people in their immortality, are probably all contributing factors.

As in modern sports, medieval athletes took steps to protect themselves. The goal wasn't to kill each other. They wore special armor and used blunted weapons.

Of course, sometimes people died, but people die in modern sports, too. To say nothing of the severe and debilitating brain damage they suffer from repeated concussive injuries.

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SurprisedPotato t1_iugkcbh wrote

Life existed before Oxygen was abundant, so no.

About 2.4 billion years ago, some bacteria figured out how to photosynthesise to get energy from sunlight. Photosynthesis produces Oxygen gas, which they didn't need, so they burped it out. Over hundreds of millions of years, the oxygen built up. Oxygen is quite toxic to life forms not used to it, so that led a mass extinction.

More info: https://en.wikipedia.org/wiki/Great_Oxidation_Event

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aawgalathynius t1_iugjksl wrote

The problem here is you’re talking about to different things. Exercise causes cells do die, but because it damaged the cell. Aging happens because of changes to the DNA, not the cell itself. Basically with time, DNA changes and gets bad at replicating (telomeres shortening), so cells don’t replicate and create new cells as they used to. When exercising, you damaged cells, but it doesn’t affect your DNA, so it has no effect on aging. You’re fine!

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