In 2023, Vidya Ganji and her team studied 392 healthy non-smokers (aged 18-45) in Hyderabad, India. They compared 196 people who used air conditioners for 6-8 hours a day for over 2 years to 196 people who didn’t. They used a survey to check for Sick Building Syndrome, which means feeling sick from being in a building, and tested lung health with a breathing machine.

In 2025, Zhenqi Liu and team from the University of Virginia reviewed studies on GLP-1 drugs like Ozempic, focusing on their impact on cardiorespiratory fitness (CRF), a key predictor of heart health and longevity. While these drugs drive significant weight loss, they also reduce fat-free mass (25-40% of total weight lost), including vital muscle, raising concerns about long-term health.

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 clinical study found that over half of carotid artery plaques removed during surgery contained microplastics—and their presence was linked to a fourfold increase in the risk of heart attacks, strokes, or death.