对于其他种类的癌症，则“没有充足”证据。

For other kinds of cancer, the evidence was "inadequate."

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科学家认为抗氧化剂（例如维生素C、E以及各种类胡萝卜素、锌等）能降低视网膜的氧化破坏，但是尚未有足够证据证明食物中的抗氧化剂能防止黄斑衰变。

Antioxidants (such as vitamin C, vitamin E, various types of carotenoids, and zinc) are thought to reduce oxidative damage to the retina.

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他通过鉴定四个可能的视角，评估每个种类的证据的力度开展工作。

He does this by identifying four possible perspectives and evaluating the strength of the evidence for each category.

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