There are a few medical conditions that can result in a person gaining weight that is difficult to stop but those are rare cases. The other 99% are obese by choice. Stop making excuses, stop blaming others. McDonalds and KFC didn't force feed you on gunpoint. That 1.5L bottle of soda is not on your doctor's prescription for twice a day consumption. 16oz is too much steak for anyone. Hot fudge sundae is not a food group. Parking by the curb in a fire lane just so you don't have to walk 20-steps if parked in a the parking lot is a choice. It is your choice to make. At least be honest about it and don't expect others to treat you special for your personal choices (e.G. You want more space on the place, buy an extra seat or biz class seat).
While being simply overweight can be attributed to things like a medical condition or lack of healthy food choices, being obese is a whole different ball game. That says to yourself and the people around you that you've made some extremely poor choices in diet and exercise, and you've done so much wrong that it's hard to go back.
Being obese is a choice; people in the US are becoming obese from laziness, less exercise, and more food. Research states that obesity is the 2nd most critical health in america. Being obese can give you a heart attack, it can cause obstructive sleep apnea (causes your breathing to stop during sleep.) you can get diabetes, high blood pressure, and causes acid reflux. Its hard to stop but its your fault in for being that way ion the first place.
Walking around your neighborhood on public roads is absolutely free. In the winter, you can walk around the mall if you dislike the cold.
You can prepare healthy meals from scratch for LESS overall than you can purchase pre-packaged processed frozen meals. There are plenty of resources for healthy recipes online such as allrecipes and pinterest. Did you know food stamps can even be used to purchase food bearing plants and seeds? Grow a small garden for cheap, healthy veggies and herbs! NO EXCUSE.
A person who was sexually abused may subconsciously eat so as not to appear attractive to those who they feel threatened by.
A person who is resistant to insulin may have a situation where their body produces insulin but the cells reject it, which cause no breakdown of the glycerol/sugar units, increasing the body's insulin production to counter it. Here's a situation in that until their pancreas breaks down, they can't be treated, but anything they eat is sent to fat reserves, slowly killing them.
A person who is depressed may eat to feel better about themselves, like a smoke, or a drug-addict, or an extreme "athlete", taking themselves out of the horrible feeling that they are in. Some suggest taking "antidepressants", which MAY work, but may not, and sadly, going through a range of chemicals leaves one sick, and may not do what they are stated to. They are unproven, based on "theories" that they will work. Some store in fat cells too, making it hard to know what "levels" are, and to work out a balance.
A person who is raised in a single parent family may find it hard to learn to cook, meaning they take the easier option of using takeaway foods, as they still need to eat. They're humans like the rest of us, and need food.
A person may live in a cold country, where body fat being stored is a good idea, so that they don't die in the extremes of the cold.
A person may have inherited genetically genes altered by any of these circumstances, or even been raised with parents who have had these circumstances. It isn't the parents fault, as they are also a victim of society's attitudes and teachings which are promoted by businesses. They may have been struggling to raise children, work, and pay may bills as a single parent with their marriage just ruined, and the money being leached away in re-establishing a platform that took all their lives to get there.
A person may withdraw from society because society is NOT society any more, but instead made up of millions of individual selfish, horrible, judgmental, hypocritical, murderous and tortuous wicked individuals, who they don't want to be around. This may lead to obesity as they can't get out due to anxieties of being harmed by these slimy people.
After this, there is natural body mass.
If society wasn't so sexually oriented, nor so selfish, and stopped contaminating our food, air and water sources, this would reduce these situations. Also, if they stopped thinking that being obese was ugly, and instead realised that society had become stagnant, like a smelly patch of fresh water with nothing to promote except bits of metal with faces stamped on, or plastic sheets with the same, they might realise that obesity is just one of the symptoms of the sick filthy society in which we live, which isn't a society at all.
In case you're thinking I'm obese, I'm not.
Humans are biologically programmed to choose unhealthy foods high in sugar and fat over healthier foods. Fast food companies as well as companies selling processed foods high in sugar and fat take advantage of this by making unhealthy addicting foods unavoidable. Many people just don't have the choice to eat healthy. i.e. food deserts where sometimes people have to drive over 20 miles to reach a supermarket with fresh produce and often times do not have a vehicle to do so. Furthermore, our culture makes unhealthy food available to us 24/7 on the tv, on the computer, on the plane, while we are driving, or by the over saturation of fast food joints across American and then expects that we constantly reject these temptations that appeal to our biologically programmed desires.