In hot weather the body often reduces appetite because digestion produces internal heat and the body prioritises cooling, so people tend to prefer lighter, more hydrating foods and drinks.
Why appetite decreases
Heat makes the body work to shed excess warmth, and because digesting large, heavy meals generates internal heat, many people naturally eat less during hot months to avoid adding to thermal load and discomfort.
What people prefer
Lighter, cooling foods such as fresh fruits, salads and cold soups are commonly chosen in summer both because they are easier to digest and because they help lower perceived body temperature and refresh the eater.
Hydration and hunger signals
Because dehydration can blunt appetite signals or mimic hunger, staying properly hydrated is essential: drinking fluids regularly helps maintain normal digestion and prevents mistaking thirst for hunger, which supports steady energy and nutrient intake in warm weather.
Practical advice
Prefer smaller, more frequent meals. Include high‑water foods like watermelon, cucumber and citrus. Choose cold or room‑temperature dishes to avoid adding heat, and drink water or electrolyte drinks during and after outdoor activity to replace fluid losses and support appetite regulation.
Takeaway
Summer often reduces appetite because the body avoids extra internal heat from digestion. Choosing hydrating, easy‑to‑digest foods and maintaining good fluid intake keeps energy balanced and supports overall wellbeing during hot months.