Doctors and other experts now understand the significant role that nutrition plays in health.

In fact, it is possible to manage some conditions, such as diabetes and hypertension, through diet alone.

However, the role of nutrition in preventing or treating cancer is not so clear cut.

Jason Locasale, the senior author of a recent study, explains: "Cancer is, in many ways, more difficult, because it's different diseases with multiple forms, and often defined at a molecular level, so we're just beginning to understand how diet and nutrition are influencing that."

Their paper, published in the journal Nature, looks at the role of an amino acid called methionine in cancer treatment.

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