When autumn temperatures drop, the human body increases energy expenditure to maintain internal thermal regulation around 37°C, triggering neurological signals that demand high-calorie foods. Le Tribunal du Net reported that this seasonal hunger is driven by biological needs and changing light levels rather than a lack of willpower.
Why does the body burn more energy when the temperature drops?
The body maintains its internal temperature around 37°C no matter what happens outside. When the air cools down, the organism must spend more energy to stay warm by making muscles shiver, narrowing blood vessels in the skin, and activating fat reserves that produce heat. Although this energy cost is modest daily, the brain acts as the energy budget manager and sends signals to resupply the stock.
What role does diminishing natural light play in increased appetite?
As the days shorten, the brain registers less natural light, which reduces the stimulation needed to produce serotonin, the hormone linked to mood and well-being. Serotonin is partly manufactured using tryptophan, an amino acid found in food, and carbohydrates facilitate its arrival in the brain, which explains why the body demands pasta or bread. A lack of light disrupts melatonin, the sleep hormone, leading to fatigue that also stimulates hunger.
Why do we specifically crave sugar, fat, and comfort foods?
Fatigue and lower moods cause the brain to seek the fastest fuel, where sugar offers an immediate boost and fat provides many calories in a small volume. These foods activate the reward circuit, releasing dopamine. However, Le Tribunal du Net noted that this appetite is not always a true caloric need, as part of it stems from a desire for comfort, alongside social contexts like family meals and reduced physical activity.
How can you manage autumn cravings without depriving yourself?
Punishing yourself only strengthens cravings, so the publication advises against deprivation. Instead, you can drink a hot tea, rely on seasonal soups and veloutés made from squash, pumpkin, or leek, add legumes for protein, and prioritize proteins like eggs, fish, and legumes at every meal as reported by Le Tribunal du Net on October 8, 2026.
