My medical record will say I suffered from anxiety due to the incident but that only lasted for a few weeks after and I now have no problems with anxiety. Can anyone who has heard of a similar situation put my mind to rest?
Sounds like you're suffering from anxiety? (Tongue in cheek, mate.)
Ok, re your weight. You need to lose weight for your own health, not to impress the board and convince them that you are committed/motivated.
Unlike many of my (occasionally drunk) mates, I don't believe that Defence Force Recruiting subscribe to the philosophy of "fatties need lovin' too"...
Walk in the door the first time in the right frame of mind, and in good health, and you'll stand a better chance. Re your medical record - I'm pretty sure they only know about what you tell them - your integrity would ensure you answered their questions honestly, but I'm pretty sure they don't get your medical records.