A 2024 cross-sectional study in Nutrients by Havemann-Nies et al. analyzed nearly 10,000 German adults and found that those who regularly ate organic food had healthier diets overall—higher in fruits, vegetables, whole grains, and fiber, and lower in sugar, saturated fat, and ultra-processed foods.

A 2025 study in Nutrients found that adults who slept longer and had better sleep quality also had stronger handgrip strength—but only when they consumed more protein and followed a higher-quality diet.