The Surprising Benefits of Eating Spicy Food

Capsaicin is the molecule that gives chilli peppers their distinctive, spicy kick; a potent irritant found in the fleshy, seed-holding parts of peppers and any dish that has you reaching for the milk after a few bites. But growing evidence links it to reduced all-cause mortality and protection from many specific vascular conditions.

The 2025 Chinese Cohort Study

One study in particular is making the rounds on Reddit and some news outlets: a huge cohort study following 500k adults living in China.

The researchers compared people who eat spicy food less than once a week with people who eat it more often, following up with them for an average of 12 years. They looked for differences in rates of vascular disease, major coronary events, ischemic heart disease, cerebrovascular disease, stroke, and non-stroke cerebrovascular disease.

They rated them on how healthy their lifestyles are, and adjusted some models for relevant factors like BMI, drinking and smoking status.

They found some statistically significant benefits to eating more spicy foods:

• Reduced rates of vascular disease (3 to 5% risk reduction)

• Lower risk of ischemic heart disease (2 to 5% risk reduction)

• Lower risk of major coronary events (4 to 13% risk reduction)

• No significant differences for other conditions

Benefits were more pronounced in people with better lifestyle scores (from better diets, less smoking, less drinking and more exercise), and were confined to people who ate mildly spicy or moderately spicy food (rather than very spicy).

Other Studies with Similar Results

This wasn’t the first study on the topic, either. Other research on 16k American adults found a 13% reduction in all-cause mortality, and a meta-analysis covering studies from four different countries broadly agreed, finding a 12% risk reduction.

Why Capsaicin Might Be Helpful

The research from the Chinese study proposed three possible mechanisms for this benefit:

1. Capsaicin’s effect on messenger RNA and some specific cytochrome P450 enzymes (CYP7A1) results in lower cholesterol.

2. Its effect on TRPV1 receptors (known as vanniloid or capsaicin receptors) helps regulate vascular tone.

3. It reduces the level of an oxidative stress marker (MDA) and boosts superoxide dismutase, increasing the antioxidant capacity of blood vessels.