my fiance has degenerative disk disease. 4 yrs ago we were in an accident (auto) which severely aggravated this to where he now has spondyloptosis (stage 5 spondylolisthesis). Around that time he became also very stiff and found out he also has Ankylosing Spondylitis. He needs spinal fusion very badly as this has been going on for 3-4 yrs... He has a lot of stetching and atrophy in the backs of his thigh areas. Which I know is common in spondyloptosis. He is in constant pain. He has also lost a lot of weight. He's never been a large guy, he was about 5'8" and 130 lbs when we met 6 yrs ago, now he is weighing less and less. On a good day he weighs 107lbs. Which is very dangerous I think. He is 33 yrs old. He has been tested for HIV, TB, Hepatitis, which are all negative. He is not a drug user. Except pain medication Lortab prescribed for his pain. The doctor keeps telling him "Eat more, you aren't eating enough." But I know he eats because I see him eating at least 3 meals a day. He tells the dr this and the doctor doesn't seem to believe him. He desperately needs surgery and he has to gain weight before they will do it but he has really been trying and nothing works. He eats and nothing happens. sometimes he'll gain a couple lbs but in a day or two his weight goes down again. He is prescribed testosterone because his was a little low and they thought that might be why he is skinny but he has been on that for months and hasn't gotton bigger. He has really increased his protien intake, on his doctors's recommendation, and that hasn't worked. We've been to numerous doctors and nobody knows why he is losing weight. Could stress from having the other 2 conditions for so long be causing this? He looks very ill. I am extremely worried about him.....