[patrocles]

Perhaps; the medical industry follows our collective choices.

Say we eat more and grow obese, industry then works hard on maintaining sclerotic, clogged arteries and other over-sizing-related sequelae. Or we choose to have unsafe sex, so we get better at treating STDs.

Ultimately, medical industry expands to support an ever-increasing number of human configurations. Financing this expansion aside, we are witnessing an evolution of the human form.

Nature doesn't provide an unchanging measure by which we can gauge our overall fitness. Luckily, the OP wishes to provide one for us.