Starvation triggers neurobiological changes unseen by the naked eye. For some people these will be permanent, because eating disorders are neurobiological in nature. And, they are also WEIGHT NEUTRAL. The neurobiological responses happen in bodies of any size, shape or weight. And while weight restoration is essential, the thing that will protect people the most is the restoration of, and construction of new neural pathways within, the physical brain. It is completely unethical to starve adolescents because of the neurobiological impact of starvation.