[twoWhlsGud]

Speculation in the discussion section is that while lower TC (below the limits cited above) is correlated with lower cardiac risk, it seems to be correlated with a higher risk of death. So the implication is there's something else bad for your health about being out of the sweet spot they observed in the data.

[gumby]

I remember reading about 20 years ago that low cholesterol was correlated with increased mortality due to increased incidence of suicide.