Odds are you need it.
Almost everyone does.
I use magnesium oil from ancient minerals mixed with DMSO to speed absorbtion (impatient) and take a mag glycinate supp.
Take it to bowel tolerance (eg rumbly guts) then back off a pill.
It does great things.
If you can't tolerate much at all, try different forms. Some need mag oxide, some need citrate, some need glycinate. Everyone is different. Take it with sat fat to aid absorbtion.
Chief cook & bottle washer for one kid, a dog, 6 hens, 2 surprise! roosters, two horses, and a random 'herd' of quail.
~The ultimate ignorance is the rejection of something one knows nothing about and refuses to investigate~