He said this in the text:
I know what you may be thinking. I have cherry picked one study to make a point. Well yes, this is just one study. However, it is the biggest and longest ever done. It represents one small part of the National Health and Nutrition Examination Survey (NHANES).
And, although it is only a small part, it represents very nearly ‘one-million-person years’ of observation. Of course, like all nutritional studies it has its weaknesses, but you will find nothing bigger, longer, or better than this. And if you want to find one that contradicts it – feel free – and good luck.
This is the full study, which has many more graphs like the one used. Most ages go up in a U shape, but that one was for people 40-60 and it did not.: