Your parents are either justified i.e you have a history of falling down stairs, burning yourself in the oven or people haven taken advantage of you on the phone before etc, hence they want to protect you, or they're being super over protective. We won't know which one it is though unless you give more details, which I realize might be something that you're uncomfortable about doing. So only you will know which scenario is applicable to yourself.
If it's the case that there is a genuine reason then I can understand you're frustrated, but then your family are doing it to keep you safe; you see this a lot in medical profession. For example nurses will often use these:
To stop sedated/confused patients from removing drips and catheters etc; sure it's restrictive but if the patient doesn't know better they could really hurt themselves and have a negative affect on their health, and they're only used if there is a prior history.
Having said that though you seem to realize that those things are dangerous, so it could very well be the case that your family is overeating. If you think so then you should confront them about it in a calm and mature way; shouting won't get you anywhere and will only reaffirm their child like image of you; kids throw tantrums, teenagers rant and rave, adults talk, it doesn't necessarily happen that way but that's the image people have. I'd also start by buttering them up a bit too; people are more likely to be cooperative if you agree with a part of their argument.
So say something like "Look I know you guys care about me, and I really appreciate that you don't want me to get hurt, but I think you're overeating a bit and it's really frustrating and hurting me; I feel like I'm a prisoner in my home, and if you really love me you'll give me a bit more freedom, and if you're still worried at least let me prove that I can do these things on my own (with supervision like a trial run at first) and if I'm okay I can do it by myself."
That's what I'd go with.
Hope everything works out.