If you find yourself unaccountably laughing, for instance, you could be overdosing on manganese. Manganese madness is a recognized disorder that can produce manic states followed by deep depression.

• 比如，如果你发现自己无缘无故地大笑，那可能是锰摄入过多。而锰引发的疯狂被认为是一种病症，它可引起狂躁，继而发展成深度沮丧的状态。