Reading some of the posts on this thread makes me wonder "How would those who advocate lying about a condition they believe could lead to losing their medical feel if one of their peers was responsible for the death of one of their family members, as a result of not being truthful"?
In the case of mental disorders such as depression & anxiety, would you prefer that someone gets medical treatment for the illness and doesn't declare it to CASA, or suffer in silence and let it go undiagnosed whilst still continuing to fly?
I know which I think is the more sensible (and safer) option.