A 2025 study in Frontiers in Nutrition by Wen et al. found that low handgrip strength (HGS) and low relative handgrip strength (RHGS) were strongly linked to increased odds and risk of asthma—by up to 50% for those at the lowest quartile of grip strength.

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.