Hobgood says in her paper that “low activity DBH would relate to impulsive behaviors while high activity DBH would relate to persistent behaviors.”

Hobgood 在论文里写到低活性的多巴胺-ß-羟化酶跟冲动行为有关，高活性的多巴胺-ß-羟化酶与常态行为有关。

This is why he recommends type O people to do vigorous exercise and eat a lot of protein because that will block the enzyme DBH.

这就是为什么他推荐 O 型血的人做激烈运动和吃很多蛋白质，因为这会阻断 DBH（多巴胺-ß-羟化酶）。

He explains that the neurotransmitter dopamine is converted into the neurotransmitter norepinephrine by an enzyme called dopamine beta-hydroxylase, and that blood type O people have higher levels of DBH, so they are prone to anxiety from increased levels of norepinephrine.

他解释神经递质多巴胺通过一种叫做多巴胺-ß-羟化酶的酶转化成神经递质去甲肾上腺素，O 型血的人有高水平的DBH（多巴胺-ß-羟化酶），所以他们容易因去甲肾上腺素的增加而焦虑。