A long–term health study that followed a group of people who were age 35 in 1950 found that those whose weight increa...

Amandaccs on December 28, 2022

Why is c correct

Hello, can you please explain why C is correct? I don't understand how talking about lean smokers can help solve the paradox.

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Emil-Kunkin on December 30, 2022

Hi, this offers an alternative reason why skinnier people, who normally should tend to live longer, might actually be less healthy. This resolves the tension. We needed to understand why something seemingly healthy is correlated with living shorter, and smoking gives us a reason to think that.