@ab11dda5 Is he also avoiding SARS-CoV-2? I suspect getting it frequently (or maybe even infrequently) will reduce lifespan significantly. Those hazard ratios for all sorts of chronic conditions don't look good.
@Carlos Guerreiro it does say the air at his home is purified :ablobsmile:
@ab11dda5 And he doesn't go out in the evening. That will help too.