The planetary health diet is linked to a 27% reduced risk of premature death, as well as lower levels of heart disease, cancer, diabetes and other chronic diseases, a report from 2025 Eat-Lancet Commission said. What can you eat on the planetary diet? Researchers wrote: “At present, all national diets deviate substantially from the planetary health diet, but a shift to this pattern could avert approximately 15 million deaths per year (27% of total deaths worldwide). How much do you eat per day on planetary diet? “The planetary health diet set out in this report is associated with improved health outcomes – and research that we have funded also supports such a diet for people after a cancer diagnosis.