The reason it's only starting to emerge now is as far as I understand that molecular biology is a relatively new field, and the related technologies simply didn't exist not so long ago.
People become a little more self-aware as they get older.
First you know someone famous that died young from a horrible disease.
Next you personally know someone who died from a disease.
Then you get older and wonder if the “1 in 3 people” might be you.
Quercetin and glycine. IMHO, they help to stay healthy and slow aging, but does not stop it. I also tried resveratrol and nicotinamide for a few months.
MSM 3g + Vitamin C 1g + NAC 600mg thrice a day
Kimchi (for Vitamin K) at breakfast, Niacinamide from a multivitamin B + Vitamin D 5kUI + Magnesium glycinate at night, with Melatonin 60 mg sublingual at night (20x the doses for sleeping is among other things anti-inflammatory and radioprotective)
Every few months an azythromycin+doxycyclin+vitamin C cure as a senolytic: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520007/
Every few month a dasatinib+quercetin cure as another senolytic : https://sci-hub.se/10.1146/annurev-pharmtox-050120-105018
BTW dasatinib+quercetin are also in clinical trials NCT02848131 and NCT02874989
Knowing people younger than you who die of old man's diseases.
Your doctor is younger than you are.
The President is younger than you are.
Your longtime friends look old.
CDC categories don't line up to "70" that well, but there are plenty of younger deaths.
51% are 74 or younger.
33% are 64 or younger.
https://data.cdc.gov/NCHS/Provisional-COVID-19-Death-Counts-...