That either obesity or aids is a self-inflicted condition is a presupposition not based on the evidence.
This question does speak to your own personal value system, though.
And to demonstrate that you are not alone in pre-judging your fellow man: A person I know and love started gaining weight. Over a 3-year period, he gained 195 pounds, developed hypertension, diabetes, cardiac disease, skin disease, osteoporosis, lipodystrophy, telangiectasia, three broken ribs from sitting, several other symptoms, and severe mood swings. His PPO physician diagnosed "nothing wrong with you that losing weight and getting rid of some stress won't cure." At the end of the three years, he determined that job stress was the problem and quit his job. It wasn't. However, he was also entitled to Tri-Care as a military retiree, so he tried the military medical system where he was diagnosed with adrenal Cushing's syndrome, a life-threatening and life-altering condition. The military hospital referred him to a specialist, who took on a two-year course of treatment. After surgery to remove the adrenal tumor and two years of treatment, including 56 days hospitalized (11 of them in a coma), he's back down to 180 pounds (physician-approved weight) and is free of diabetes, hypertension, and most of the other "symptoms," but will always have the effects of the heart disease, osteoporosis, and other permanent damage. And Tri-Care picked up all but about $500 of the bill.
He's back to seeing a civilian doctor but not the doctor who spent three years *assuming* that because he was fat, he brought his troubles on himself.
Note: Tri-Care and the military hospitals comprise a government-run system. It runs smoothly and efficiently most of the time. In 30 years of dealing with Tri-Care and military hospitals on two continents, I have been dissatisfied with the care I got twice: Once when a dentist didn't want to stay overtime to repair a filling in my tooth (but he did) and once when "the system" didn't want to pay for me to see a non-military specialist. That time, the military doctor and I couldn't see eye to eye, so we fired each other and I got a doctor I could communicate with. I have NEVER had a problem with Tri-Care paying the bills accurately and on time, although several times providers have tried to bill me what Tri-Care did NOT pay (which is a felony on the part of the provider).
And finally, 5 years ago I went to the emergency room of the local for-profit hospital with severe symptoms. The ER doctor said that the symptoms were not serious and to go home, and the nurse on duty refused to disagree with the doctor even though she could see with her own eyes that the problem could be severe. So I drove to the nearest military clinic's ER and told the physician on duty what was going on. He couldn't understand how any ER physician could ignore my symptoms and had me transported by ambulance BACK to the original hospital and admitted through the ER on his say-so. I was a patient there for a week until the condition was diagnosed and brought under control.
Strange that people don't want a "government-run" medical system of the "socialist" persuasion, when it is the government-run system that is running smoothly while the rest of the health-care system is running amok.