Maybe they mean literally the body composition of a fetus when it starts to grow as it feeds off via placenta, like it literally gets 100% of the mass from the mother’s organism

Eliza or its faithful clone comes with every Emacs. To conslult your doctor type M-x doctor

Chernoblyat

My question is genuine though, I’m not biophysics expert, I know there are radioactive elements in our body, but are they worthless? Probably the least meaningful to sustaining life would be least reactive elements if that makes sence, but life is more about energy of chemical reactions between molecules, not individual elements

All the radioactive ones maybe?

Try Bodhi Linux - you can burn it to CD/USB or copy it on a Ventoy USB stick to test before installing and it is available for 32 bit systems