研究发现，素食可能有助于促进癌症治疗

Going vegan may halt cancer in its tracks, scientists say.

科学家说，素食可能会阻止癌症的发展。

It could also make chemotherapy and radiotherapy more effective, according to their tests on mice and people. The findings were published in Nature.

根据他们对小鼠和人的测试，它还可以使化疗和放疗更有效。研究结果发表在《自然》杂志上。

The researchers focused on restricting the amino acid methionine, which affects metabolism and is found in meat, fish and dairy products.

研究人员将重点放在限制蛋氨酸的含量上，蛋氨酸影响新陈代谢，存在于肉类、鱼类和乳制品中。

First they cut it out of food for rodents with cancer and found that growth of tumors was “inhibited.”

首先，他们将其从患有癌症的啮齿动物的食物中剔除，发现肿瘤的生长受到了“抑制”。

When the diet was combined with the chemo drug 5-fluorouracil or radiation therapy, spread of the disease was halted.

当饮食与化疗药物5-氟尿嘧啶或放疗相结合时，疾病的传播就停止了。

Researchers then gave five women and a man — ages 49 to 58 — a methionine-free diet for three weeks. At the end, their levels of methionine had been cut by 83 percent and metabolism molecules in their blood were at the same level as the rodents.

然后，研究人员让五名女性和一名年龄在49岁至58岁之间的男性进行为期三周的无蛋氨酸饮食。最后，他们的蛋氨酸水平被降低了83%，血液中的代谢分子水平与啮齿动物相同。

Study leader Prof. Jason Locasale, a cancer biologist at Duke University in North Carolina, said: “In the people, a reduction in dietary methionine had a similar effect on metabolism to that seen in mice.

研究负责人、北卡罗来纳州杜克大学的癌症生物学家杰森·洛卡塞尔教授说：“在人类中，饮食中蛋氨酸的减少对新陈代谢的影响，与在老鼠身上看到的相似。”

“These findings provide evidence that dietary manipulation can affect tumor-cell metabolism.”

“这些发现提供了证据，证明饮食控制可以影响肿瘤细胞的新陈代谢。”

Low-methionine foods include fruits, nuts, vegetables, grains and beans — in other words, a vegan diet favored by celebs such as Natalie Portman and Ariana Grande.

低蛋氨酸食物包括水果、坚果、蔬菜、谷物和豆类——换句话说，这是娜塔莉·波特曼和爱莉安娜·格兰德等名人喜欢的纯素食饮食。

The study comes 40 years after a paper claimed cancer had “absolute methionine dependency.”

40年前，一篇论文声称癌症“绝对依赖蛋氨酸”。