White bread, cheese (at least not the one on burgers) and red meat aren’t exactly known as healthy foods. Definitely not in the proportions of a burger. Even more definitely not when you boil the meat in oil (often together with the onions).
I don't think there's anything fundamentally wrong with eugenics. Screening for genetic diseases before birth is eugenics, selecting the best embryos for ivf is eugenics. Believing that people with severe genetic disabilities should be counseled before conceiving is eugenics as well.
The issue is the way it's done and the reason for it.
It’s a transverse section so it’s not really ‘top down’ or ‘bottom up’. It’s a thin slice where the densities of the tissue is calculated by sending through X-rays from around the body and measuring how much gets trough from each angle and then letting a computer do some fancy math.
TBF this doesn’t have anything to do with sexism, it’s just general incompetence. Listening to the lungs with a stethoscope would have been enough to notice that something was very wrong.