Jemastock/Shutterstock.com Sitting for more than 30 minutes at a time is linked to a higher risk of dying from cancer, while breaking up long sitting spells with light activity appeared to lower that risk, according to new data. But media reports of the study left many questions unanswered. Here’s what you need to know. What did this study actually find? The main message is simple: it’s not just how long you sit each day, but how you sit that seems to matter. People who stayed seated for long, u