Cutting calories by 10% to 15% may boost healthy aging without extreme diets.

New Research Shows Vitamin B12 May Hold the Key to Healthy Aging

Only half of the calories produced on croplands are available for human consumption. The calories ‘lost’ to inefficiency (49.9%) is enough to support 7.2 billion people. 39.7% of the lost calories are from beef production, which requires 33 calories of feed for every calorie of boneless meat.

This Diet Change Cuts Over 300 Calories a Day, Without Decreasing Meal Size