The obesity paradox is actually even more hilarious than just that. Researchers noticed that fatter patients that developed heart disease survived longer than thinner patients with the same condition. That was of course confusing to everyone and people started to study this phenomenon more. As it turned out fatter patients developed the disease much earlier in life than thinner people. So in the case of a thin 70 year old and a fat 40 year old who both develop the disease at the same time the fatty might survive the condition for a few years longer than our old shitlord, but it will still have lived a much shorter life in total. The Lord Beetus giveth and taketh away again. Mostly taking away though.