Growth Hormone Replacement in Veterans With GWI and AGHD (GWIT)

This study is testing growth hormone replacement therapy in Gulf War veterans who have both Gulf War Illness (a chronic multi-symptom disorder) and adult growth hormone deficiency. Researchers want to see whether replacing deficient growth hormone improves veterans' energy, cognition, and overall quality of life. You may be eligible if... - You are a veteran who was deployed to Operation Desert Storm or Desert Shield between 1990-1991 - You are 64 years old or younger - You have been diagnosed with Gulf War Illness - You have adult growth hormone deficiency confirmed by a glucagon stimulation test - Your psychotropic medications have been stable for at least 4 weeks - Your hormone treatments have been stable for at least 3 months You may NOT be eligible if... - You have a serious psychiatric disorder such as schizophrenia, bipolar disorder, or a psychotic disorder - You have another neurological disorder significantly affecting your quality of life - You have active suicidal ideation or a recent suicide attempt (within the last 6 months) - You have an active infection, cancer, or serious uncontrolled medical illness - Your BMI is over 35 or you weigh more than 350 lbs - You have a known allergy or contraindication to growth hormone therapy - You are a woman of childbearing potential unwilling to use contraception - You are currently on growth hormone, estrogen supplements, hormonal contraceptives, or similar medications Talk to your doctor to see if this trial is right for you.