Still struggling.

[SteelCurtain]

Mom and dad told me I have the gene, they learned from the doctor. My grandmother broke her hip and she needed surgery. That's how they learned.

They learned from a doctor that told them their son has a gene based on the fact that grandmother has a gene? Sorry, GDog, but that's horseshit.

There's a reason why people with hereditary Huntington's disease still have to have the gene marker identified before they are diagnosed. Which means that your parents are either lying to you or vastly misinterpreted what the doctor told them. If grandmother has the gene and neither mom nor dad express the gene, then you have nominally a 1 in 8 chance of just carrying the gene, depending on a lot of factors, but that's the simplest calculation. And just because you carry the gene does not mean that the gene expresses itself.

A quick pubmed search shows that the defective gene (if the same one) causes a condition called malignant hyperthermia, where general anesthesia causes fever and muscle contraction, and 5% of the time it can be fatal. The test for the disease is removing a 2-3" strip of muscle from your thigh.

So, unless you've had a strip of muscle out of your thigh, you don't know if you have this gene. It's hyper rare.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2360775/

Your parents are trying to scare you back into their religion. The use of fear and emotional leveraging rather than evidence is a signal that it's all bullshit.