High blood sugar produces unstable forms of oxygen called free radicals.

高血糖会产生不稳定的氧叫做非常自由氧。

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This happens because of exposure to free radicals, highly reactive molecules that are byproducts of bodily functions involving oxygen (which is just about all of them).

这种情况发生的原因是身体机能接触氧后产生的副产物自由基的释放，自由基是一类具有高活性的分子，对人体具有巨大的威胁。

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Treating with too much oxygen, therefore, could increase the production of free radicals and make a bad situation even worse.

因此，用过量的氧气进行治疗，可能增加自由基的产生，使本就糟糕的情况更加恶化。

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Much of the damage looks like the result of oxidation by free radicals (oxygen-rich compounds released during cellular energy production).

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These free radicals are oxygen-rich molecules in which one of the oxygen atoms is particularly likely to react with other chemicals.

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They then have nowhere to put all the light energy they are absorbing, and the resulting breakdown of biochemical pathways creates toxic oxygen-containing molecules known as free radicals.

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