 So what have you changed in the knowledge that you've acquired? How have you changed your diet and your activities? Well, I've become a lot more, and this is not to sound alarmist or to fearmonger, but I've become a lot more aware of my environment. I try to make sure that I'm breathing in clean air. I've replaced the air filters in my HVAC system in my home regularly. I have an air purifier because we know that indoor air can be up to 100 times more polluted than outdoor air, actually.