Andrew Huberman· PhD
And he replied that for years, he had been a chronic smoker, which on the one hand had greatly impaired his cardiovascular health and his fitness, no surprise there. And we'll talk a little bit more about what the underlying reasons are, but most everyone, if not everyone knows that smoking cigarettes or smoking in general really impairs lung health. There's just simply no question about it. There are some more or less unhealthy ways to smoke, but the quite honest message is that smoking of any kind is going to disrupt lung endothelial function, lung function, blood vessels, and so forth. It's going to make it harder to breathe with vigor, take deep breaths, deliver oxygen to tissues, et cetera. That said, he also pointed out that the data on nicotine specifically are pointing to the fact that nicotine can be, can be protective against certain forms of cognitive impairment. And that is why he continued to chew nicotine containing gum. And he swore by the focus enhancing and motivation enhancing effects of nicotine containing gum.