Can Spicy Food Help You Eat Less? A New Study Says Yes

A recent study published in Food Quality and Preference (June 2025) presents compelling evidence that increasing the oral burn sensation—without altering texture or nutritional content—can slow down the eating process and reduce food intake.

The study, titled "Increasing oral burn without changing texture reduces oral processing speed and food intake", was conducted by Dr. J. Forde and a team of researchers specializing in sensory and behavioral nutrition. The primary aim was to assess how varying levels of oral pungency, induced by capsaicin, influence eating behavior.

Study Design
Researchers prepared several versions of the same hearty soup (containing meat and vegetables), all identical in appearance, caloric content, and texture. The only variation was the intensity of the burning sensation, modulated using controlled doses of capsaicin.

Participants were monitored in a controlled environment while researchers recorded variables such as number of chews, total meal duration, eating speed, and total food intake.

Key Findings
As the level of oral burn increased, participants ate more slowly, chewed more thoroughly, and ultimately consumed less food. These changes occurred without participants being aware of them, suggesting that the sensory adjustment acted subconsciously on satiety cues.

Nutritional Implications
The study offers a novel, non-restrictive approach to appetite regulation. Introducing moderate spiciness to meals could serve as a practical and accessible method to promote slower eating and earlier satiety—key factors in supporting metabolic health and weight management.

Reference
Forde, J., Brunstrom, L., et al. (2025). Increasing oral burn without changing texture reduces oral processing speed and food intake. Food Quality and Preference, Volume 114. Elsevier.