In this article, Dr Dan Baumgardt explains how a range of internal processes relating to appetite are impacted by Summer heat. Heat exposure may trigger hormonal shifts which decrease appetite, increased thirst can lead us to seek out more water-dense foods which are lower in calories and heat stress can mean the stomach empties more slowly, keeping us fuller for longer.
Baumgardt recommends cooling down, drinking plenty of fluids and prioritising protein-rich meals to help regulate appetite in hot temperatures.