We just don't need them to be overactive or underactive, you know.

要它过活跃或过迟钝，明白吗。

Cracked heels could be a sign of underactive thyroids.

脚后跟干裂可能是甲状腺功能低下的征兆。

And so it can make anxiety worse if it affects the genes that express cortisol production by making it overactive or underactive.

因此，如果它影响了表皮质醇生成的基因，使其过度活跃或活性足，可能会加剧焦虑。

They are either overactive or underactive, depending on what symptoms we're looking at, but they've got a malfunctioning brain that is causing the experience of depression.

它要么过度活跃， 要么活跃足，这取观察的症状是什么，但他的大脑功能出现了故障， 导致了抑郁体验。

It's just the same thing as when the thyroid's underactive, you go and take thyroid replacement.

这就像甲状腺功能低下时，你去服用甲状腺替代药物一样。