Okay, story time. Long read, but the effects of this legal loophole are funny as fuck. I don't know if I will be able to explain it perfectly, since it is a complicated subject and I am not that good at english. Anyway...
I'm from Argentina, and our legal system is determined by two supreme documents, the 'Constitución de la Nación Argentina' and the 'Código Civil y Comercial de la Nación'. The last one came out in 2015, and it established how the 'Derechos Personalísimos' work. These rights affect, among other things, the way the legal system interacts with the decisions people make about their own bodies. The general principle is that the system supports every choice the subject makes about their body, with a few exceptions, one of them being that the system does not support a person wanting to perform actions on his or her body that would damage or handicap his or her physical well-being. This means that, for example, the system does not support me if I go to the hospital and ask them to remove my leg because I want to pretend I am a pirate.
This new regulation also establishes that if a person voluntarily performed an action that damaged or handicap his or her physicall well being (without medical assistance, since, as I said, it is illegal to assist these actions), the system will treat the situation as if it does not exist. This is done to avoid things like chopping your own finger being considered a crime. Does that mean that if I cut my leg off and then go to the hospital, they can refuse to treat me because the injury doesn't exist? No, because this new regulation also says that it works in conjunction with an older regulation that refers to health services, and cases like this one are contemplated. However, this older regulation is, indeed, pretty old, and was designed when fat people pretty much didn't exist. What has happened, then?
... starting a couple weeks ago, what has happened is that Obras Sociales (I don't know how to translate this to english, Obras Sociales are entities to which you forcibly have to send part of your income if you have a salary, or contribute money for every employee you have if you are an employer; and they cover all the costs of every health problem you have) are refusing to treat fat people because the medical conditions that doctors believe result from being fat do not exist. And they do not exist because A) fat people got fat on their own accord so they fall under the category I told about earlier, and B) the older health regulation doesn't contemplate being fat.
It's likely that something is going to change so fats can get medical attention again, but the last 20 or so days of march, and this april, Obras Sociales have been kicking fats in the ass and denying them treatment, and their lawyers can't do anything about it.