I'm a little unclear about the difference between increased susceptibility to weight loss [MP:0010180] and weight loss [MP:0001263]. When would we used the latter instead of the former?
I think the primary names are not well described, but the definitions are a little better. Maybe I should change the 'increased susceptibility to weight loss [MP:0010180] " to "increased susceptibility to weight loss in response to dietary modification". It's meant to be used when the mutant animals exhibit normal weight under normal dietary conditions, but show differences in weight loss under restricted dietary conditions.
Use weight loss [MP:0001263] when normal dietary conditions are used, or when not specified.
Same concept for "abnormal susceptibility to weight gain" MP:0011117