62 overweight adults were randomly assigned to a low-fat vegan or Mediterranean diet for 16-week periods. Total greenhouse gas emissions and cumulative energy demand were reduced on the low-fat vegan diet by 57% and 55%, while the Mediterranean diet had a 20% reduction and no change, respectively.
Higher intake of total and saturated fats was associated with increased risks of several site-specific cancers, whereas polyunsaturated fats may have protective effects, umbrella review finds