A staggering 99.99% of Americans fail to get the minimum recommended potassium intake (despite it being perhaps only half of our natural intake) and stay below the recommended sodium intake (even though it may be twice our natural intake). Worldwide, physical inactivity accounts for more than 10 million years of healthy life lost, but what we eat accounts for nearly 20 times that. Unhealthy diets shave hundreds of millions of disability-free years off people’s lives every year. What are the worst aspects of our diets? Four out of the five deadliest dietary traps involve not eating enough of ce...