When it comes to measuring your health status or fitness level, there’s no shortage of metrics out there, which makes figuring out which ones actually matter confusing. One number you might want to ...

Move over, BMI. It’s time to get SAD. This article first appeared in The Checkup, MIT Technology Review’s weekly biotech newsletter. To receive it in your inbox every Thursday, and read articles like ...

This may not give you the best reading of your body composition. Few health metrics are as contentious as body mass index, or BMI. A ratio of height to weight, BMI is used widely in the medical field ...