Spicy food does more than just excite your taste buds—it can actually make your body work harder. That familiar sensation of heat, sweating, and flushed skin after eating chillies is a sign that your metabolism is temporarily speeding up. Experts say this reaction is caused by capsaicin, the active compound found in chilli peppers.
People who enjoy spicy dishes often notice sweating, warmth, and a flushed face. While this may feel intense, health professionals explain that it is a normal bodily response. Capsaicin activates thermogenesis, a process in which the body produces heat and burns extra calories to cool itself down.
In a recent Instagram post, nutritionist Nmami Agarwal explained that capsaicin may help improve metabolism, suppress appetite, enhance insulin response, and increase fat burning. She noted that the body burns more energy during this process, which is why people tend to sweat after consuming spicy foods.
“Chilli isn’t just a flavour bomb—it’s a fat-burning superhero. The heat from capsaicin improves metabolism, boosts fat burning, reduces appetite, and improves insulin response. That sweat is your body literally burning extra energy,” Agarwal said.
According to the National Institutes of Health, capsaicin stimulates thermogenesis and fat oxidation by activating TRPV1 receptors in the body. Research suggests it may help reduce body weight and abdominal fat, encourage fewer calorie intake, and even convert white fat into brown fat—a type of fat that burns energy more efficiently.
Some studies also indicate that the body’s fat-burning ability can increase by 30–35% around 45 minutes after eating hot peppers. Regular consumption of capsaicin-rich foods may also help prevent weight regain after weight loss.
However, experts warn against excessive consumption. Too much spice can irritate the digestive system and worsen conditions like acid reflux, ulcers, and stomach acidity, especially in sensitive individuals.
“Spice should energise you, not irritate your gut,” Agarwal advises, urging people to adjust their spice intake according to their tolerance levels.
Disclaimer: This article provides general information and should not be considered medical advice. Always consult a qualified healthcare professional for personalised guidance.