India’s dirty air worse than cancer? 'Age-reversing' CEO warns: 'Babies exposed from birth...' as we normalise an emergency

Can bad air cut short a conversation? That’s exactly what happened when Bryan Johnson, the biotech entrepreneur known for his ‘age-reversing’ experiments, walked out of Nikhil Kamath’s podcast. His reason? India’s air pollution.

Why did Johnson end the podcast?

Johnson, who was in India recently, shared on X that he had to leave the podcast midway due to poor air quality inside the recording room.



"When in India, I did end this podcast early due to the bad air quality. @nikhilkamathcio was a gracious host and we were having a great time. The problem was that the room we were in circulated outside air, which made the air purifier I'd brought with me ineffective."

According to him, the room’s AQI was 130, and PM2.5 levels stood at 75 µg/m³—equivalent to smoking 3.4 cigarettes over 24 hours.

‘Air pollution is normalised in India’

Johnson went on to describe how the pollution affected him physically.

"This was my third day in India, and the air pollution had made my skin break out in a rash and my eyes and throat burn. Air pollution has been so normalised in India that no one even notices anymore despite the science of its negative effects being well known. People would be outside running. Babies and small children exposed from birth. No one wore a mask which can significantly decrease exposure. It was so confusing."

His concerns didn’t stop at personal discomfort. He claimed that fixing air pollution would do more for public health in India than curing all cancers.

‘Why isn’t air pollution a national emergency?’

In his post, Johnson questioned why India’s leadership hasn’t taken stronger action on air pollution.

"The evidence shows that India would improve the health of its population more by cleaning up air quality than by curing all cancers. I am unsure why India's leaders do not make air quality a national emergency. I don't know what interests, money, and power keep things the way they are, but it's really bad for the entire country."

Comparing India’s air to America’s obesity crisis

After returning to the US, Johnson had a moment of self-reflection. He realised how easy it is to overlook issues that one is constantly exposed to.

"When I returned to the U.S., my eyes were fresh to see what is normalised to me. I saw obesity everywhere. 42.4% of Americans are obese, and because I was around it all the time, I had been mostly oblivious to it."

He argued that, in the long run, obesity could be an even bigger problem than air pollution, questioning why American leaders don’t treat it as a national emergency either.

A podcast cut short

During the recording, Johnson, wearing a face mask, even joked about the pollution. When Kamath asked how bad the air quality was, he responded, "I can't see you over there."

The episode may have ended abruptly, but it left behind lingering questions—about India’s air pollution crisis, about what people choose to ignore, and about the larger health challenges nations fail to prioritise.