What has changed in the time

you've been doing this work? So I started operating on lungs in late 80s.

So it's about 36 or 37 years now that I've been looking at people's lungs.

And very sadly, and I say it with a very heavy heart, that I have noticed a change in the color of the lungs of people.

So lungs are pink, pristine pink when we are born.

But the toxins that we inhale during the course of breathing 25,000 times a day, from the first breath of our life till the last breath of our life, those toxins are bringing about a change in the color of the lungs of my countrymen.

And nowadays, when I look at the lungs, I hardly ever find a pink lung.

Why not? Visibility.