How long we'll live is primarily because of genes, not lifestyle factors like what we eat. If it were anything having to do with medicine or diet then no one in the past should have lived beyond 30
That ain't true. Obesity alone taxes the heart and cardio network. Then we get a lot of inflammation from wheat and sugars, some of which can be hard to perceive because gut inflammation doesn't necessarily feel like joint inflammation. Premature death from strokes and heart attacks and gut ailments including inability to process nutrients, they all count toward life expectancy.