If 50% of people die from CVD, the rest from cancer, and statins halve CVD mortality. What will be the impact on all-cause mortality? What will be the impact on life expectancy? Probably less than expected.
This goes back to a very real issue with statins and all other drugs but there may be some additional confusion among lay people because statins have a bad reputation in some circles. Not that I am an expert on statins or epidemiology, but I want to offer an interesting take on this problem.