I've actually been thinking about this a lot lately because I've been more suicidal in the past few years than since my teenage years. I've always been off & on suicidal, but once I got our of college and out of the house, the suicidal thoughts mostly came and went, with just really short periods of deep depression. However, I've now been like this for 4-5 years now and in some ways it seems to be getting worse.
After much pondering, I don't know for sure, but I do think that my weight has a lot to do with it. Unfortunately, no matter how much I detest the weight and hate myself because of it, I think I am so fearful of failure at the weight loss game, that I cannot make myself actively try. Back when I first started gaining weight, I struggled to lose it and when I finally did, it seemed like it only took a few months to come back. And totally eliminating all of the good food in life is not a life worth living either.