Hi Chris, Welcome to our forum family, but so sad to hear about your husband hun. Hummmmm... I dont know about your theory, my dad did not start to lose weight until after he was diagnosed. Plus PALS have trouble eating. My dads weight is not down to bad within a year of symptoms, of course he finally gets to eat high calorie foods like he always wanted to, so he is happy about that. I personally think that the weight loss is attributed to the neurons dying in the brain. I think it also messes with the metabolism.
My two cents anyway.
Hugs, Kari