Some people are naturally thin and some people are naturally heavier. It doesn't mean that bigger is healthier, or much thinner is healthier, it's on an individual basis.
“Hope is the only universal liar who never loses his reputation for veracity.”
“One needs but to say that, in the case of an unfamiliar sequence of syllables, only about seven can be grasped in one act, but that with frequent repetition and gradually increasing familiarity with the series this capacity of consciousness may be increased.”