Many of us believe we are supposed to walk 10k steps per day. The truth is that there has never been research to back that up. The number comes from a 1960’s, Japanese ad campaign for the first pedometer. Clearly the campaign worked because we’ve all been believing it ever since.

But now we have three research studies that indicate, perhaps to some people’s delight, that we may not need 10k steps for a substantial benefit. It looks like the magic sweet spot is between 7,000 and 8,000 steps. Upon crossing that threshold people decrease their chances of mortality by all causes by 50-70%.

These studies showed correlation not causation, so it is not evidence that walking makes you live longer, but people who walk certainly live longer. If you’d like to be in the “live longer” group, I’d encourage you to build up to 7k steps per day.

To be clear, I’m not suggesting if you already walk more than that (perhaps you have gotten in the habit of 10k steps) that you should reduce your goal. Increased steps was correlated with even more gains, but the most profound leap in longevity came […]