Regarding asthma: it is currently considered to be an auto-immune disorder. The latest theory I read is that the lungs need to develop their own resistance to infection; more specifically, developing lungs need exposure to hazards to tune the immune system and prevent overreactions of the immune system later [1].<p>Regarding antidepressants: there exist strong links between depression and stress. Current society is arguably more hectic and stressful than what we&#x27;ve had before, but I&#x27;m not sure if that is fixable (it is, however, one of the reasons I use an ad-blocker).<p>[1] <a href="https:&#x2F;&#x2F;www.sciencedaily.com&#x2F;releases&#x2F;2014&#x2F;06&#x2F;140606091157.htm" rel="nofollow">https:&#x2F;&#x2F;www.sciencedaily.com&#x2F;releases&#x2F;2014&#x2F;06&#x2F;140606091157.h...</a>