Christopher M. Jones wrote:

I'd disagree, and the fact that people can successfully
battle anorexia is proof that your analogy is not apt.
The neurochemical disorders in anorexics brains do not
force them to do things they create urges. They do
have a choice, it's just heavily biased toward not
eating. This is not at all the same as Alzheimer's
disease. It is far more akin to, say, alcoholism,
cocaine addiction, clinical depression, or OCD. Also,
not all anorexia is due to a neurochemical disorder.

It's similar in the sense that it's caused by an underlying
physical condition, not a moral failing. The difference
is one of degree, not of kind.

Paul