What an amazing article!
"But Hersoug says the hypothesis gives us no excuse for dropping diets and exercise – on the contrary.
“We know already that a sedentary lifestyle is a risk factor for many diseases,” he says. “According to our theory, this may be because of the higher acidity in the blood arising from a sedentary lifestyle indoors in a CO2 concentration that is higher than it is outdoors.”
On the other hand, he says, “If you’re out running, you get your blood circulating and you can pump much of the CO2 out of your body, so our hypothesis is really further evidence that exercise is healthy. And exercise may be even more necessary in the future, when we can expect even higher CO2 concentrations in the atmosphere.”
Hersoug adds that fruit and vegetables also reduce the blood’s pH value, so the CO2 theory is also an argument for eating more healthily."