This shows the fallacy of applying population studies to individuals.
Okay, fine, we identify a "risk factor". Then EVERYBODY thinks it is THE CAUSE. And that anybody who doesn't modify that risk factor is committing suicide. But geeze, 2 years for the obese? They make it sound as if I would live to be 200 years old except for my BMI. It just ain't so.
I note that our average life span is about 76. My guess is that it is 76 for cancer deaths, 76 for cardiac deaths, 76 for lung deaths. if we CURE heart disease, it won't add diddly squat to how long "we" live, we'll just die just as soon, just from a different cause. On the average.
And let me float a non-sequitor on you, humor involved: If we die at avg 70 from cancer, and we manage to cure heart disease which kills us at avg 76, won't we die earlier from cancer? On the average?
In summation of ALL of those population based studies, we don't care about the death rate, since the actual death rate is ONE. We don't need any statistics for that. What we care about is adding years to our lifespans. But they never tell us the avg life spans of those with and without that particular risk factor. It's the emporer's new clothes. This info is available, it's in somebody's lap top. Maybe the guys studying the Framinghamers. or the Harvard Health Care Workers. Thousands of deaths over 60 years, they have an avg life span of each risk factor by now.
Next question, while I have the podium: Who cares about population studies instead of individualized medicine? Insurers do. And they don't have to skip any bacon cheese burgers deluxe. If YOU do, they delay their payouts. Any miniscule delay for an individual makes profits rise when you have millions of customers. (Include Social Security, HMOs, Life Insurance,....)
It's not a Big Pharma Conspiracy, It's a Big Insurance Conspiracy.
eta: Of course, Big Insurance has investments. Lot's of investments. They actually make more money from investments than selling insurance. That is how they work. Some of those investments are in Big Pharma. Gotcha coming and going.