该不该担心防晒霜渗入血液?_BEC初级作文

该不该担心防晒霜渗入血液?

A recent study found that some chemicals in sunscreen can be found in your blood after just a day of applying them liberally, but don't freak out just yet-sunscreen is still considered safe to use, and you don't even necessarily need to switch brands.

最近的一项研究发现：涂完防晒霜一天后，部分化学物质会进入血液，但不要惊慌--防晒霜还是安全的，而且也没有换品牌的必要。

Is it bad for sunscreen to be absorbed through the skin?

防晒霜被皮肤吸收是件坏事吗？

该不该担心防晒霜渗入血液?1

Not necessarily. We've known for a long time that it can be absorbed, so this isn't news. FDA rules assume that some absorption can happen, but that if levels are above 0.5 ng/mL, extra safety studies should be done. The new study established that, yes, levels can get this high if you apply a ton of sunscreen.

不一定。很久以前我们就已经知道防晒霜会被吸收，这已经不是新鲜事儿了。美国食品药品监管局（FDA）的指标表示，防晒霜会在一定程度上被吸收，但如果超过0.5 ng/mL，则需进一步开展安全研究。新研究表明，是的，如果大量涂抹防晒霜，吸收水平的确会高达0.5 ng/mL。

How much sunscreen are we talking about?

大量涂抹防晒霜的定义是什么？

People in the study used way more sunscreen than any of us do in real life. Researchers followed the directions that we're all "supposed to" follow, applying two milligrams of sunscreen per square centimeter of skin, and then applying that same amount again and again throughout the day. Realistically, most of us apply a quarter to half that amount at a time, and reapply less if at all.