Great comment. And it's even worse with less common ailments like Asthma or Chronic Fatigue Symptom. My wife has Asthma that is triggered by a number of different things including perfume and smoke. People often dismiss concerns she raises about perfume or smoke as her just being picky when it's really a health issue. But you can't see it and most people never experience it so that makes it harder to take seriously.
These are great advices, good for everyone, but it won't cure asthma. I eat healthy breakfasts, sleep generally enough and exercise at least 1 hour a day, and I don't suffer from asthma thanks to inhaled corticosteroids I take every single day.