It is a data point because it is the same family, similar genetics, similar upbringing, similar socioeconomic status. One generation ate crap and did okay. Another was more cautious, but to no avail. As to whether or not that diet is causal, I made no statement or suggestion. I don't even have an opinion on it. I am merely stating that, according to the science of the day, they did "the right thing", but the situation did not improve.