The other worry about meat is homocysteine, homocysteine is well-known for its apparent contribution to heart disease.

关于肉食的另一个担忧是巯基丁氨酸，众所周知，巯基丁氨酸会导致心脏病。

So, once methionine donates that methyl group, it becomes homocysteine.

所以，一旦甲硫酸铵“捐献”出甲基组，就会变成巯基丁氨酸。

As was discussed earlier in the video, you want to keep homocysteine down and you need B vitamins like B12 to do that.

正如本视频之前所讨论的，巯基丁氨酸水平不能高，维生素 B12 可降低巯基丁氨酸的水平。

This study also found that 16% of the omnivores, 38% of the vegetarians, and 67% of the vegans had high homocysteine levels.

这项研究发现，16% 的杂食者、38% 的素食者以及 67% 的纯素食者的巯基丁氨酸水平偏高。

But, In order to get rid of the homocysteine, you need all the B vitamins. And... animal foods are quite high in B vitamins.

但是，摄入维他命 B 族能将巯基丁氨酸排出体外，巧的是，动物性食品中充满了 B 族维生素。