Across India, from a plate of steaming momo drenched in fiery chutney, chilli pakora to a humble home-cooked curry, spicy food holds a charm that’s hard to resist. Even though it can leave us teary-eyed, sniffling, or reaching for cold water, we keep going back for more. It’s a curiosity worth exploring: why do we enjoy something that quite literally makes us uncomfortable?

What makes chillies hot in the first place?

According to an article in The Guardian, the heat we feel from chillies comes from a compound called capsaicin. This chemical acts as an irritant, and its natural function is to prevent plant seeds from being eaten by birds. When humans consume capsaicin, our bodies react instantly, sending signals urging us to expel this unfamiliar intruder.

The result?

Sweating, watery eyes, a runny nose which is the whole spicy-food experience that many of us know all too well.

If it hurts, why do we still love it?

Here’s where the story gets interesting. Despite these reactions, a large number of people across the globe, perhaps even a majority, feel that life without heat on their plate is incomplete. So why do we keep subjecting ourselves to what feels like mild torture?

The article also explains that capsaicin attaches itself to a receptor in our bodies called TRPV1. This receptor’s job is to alert us that the body must remove the irritant. But humans have a strange fondness for activities that flirt with discomfort while still remaining safe.

Think of bungee-jumping, or settling down with a horror film. These experiences bring a rush precisely because they are slightly unsettling, yet fully within our control. Spicy food offers a similar thrill. And the more often we eat it, the more accustomed our receptors become, reducing the intensity of the alarm and giving us an even greater sense of control.

In short, eating something spicy becomes a manageable, enjoyable challenge like a tiny adventure on the tongue.

How do we measure a chilli’s heat?

Scientists have created a way to quantify just how “sharp” or hot a chilli is: the Scoville Scale. Named after American pharmacologist Wilbur Scoville, who introduced it in 1912, this system measures the pungency of different chillies.

According to pepperhead.com, the current record holder for the ‘hottest’ chilli is Pepper X, boasting an average of 2.69 million Scoville units. Its seeds aren’t freely accessible, though they are considered far too potent for most people to handle.