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  • There's been a lot of buzz about dubious chemicals in the environment


  • that might contribute to some pretty frightening stuff like obesity, breast cancer, thyroid issues.

  • And they seem to lurk everywhere:


  • in pesticides, cosmetics, and especially plastic packaging.


  • In light of this, it's understandable to start panicking.

    不過在開始要驚慌前,先來聽聽分子生物學家 Bruce Blumberg 對這件事的看法。

  • But before you do, let's hear what molecular biologist Bruce Blumberg has to say on the subject.

    他對合成化學物和過胖問題之間的關係已經研究大約 15 年。

  • He's been studying the link between synthetic chemicals and obesity for around 15 years.


  • So he might be able to give us a better idea of what's really going on and what to do about it.

    有一個壞消息是 Blumberg 已經證實的,沒錯,我們身邊都充斥著這些化學物質。

  • Bad news is, Blumberg confirmed that, yep, we're surrounded by these chemicals.

    其中一個化學物是大家都知道的 BPA 或是說酚甲烷,多用於水瓶、罐頭、牛奶盒等等。

  • One of the most well known is BPA, or Bisphenol A,


  • which shows up in water bottles, cans, milk cartons, and more.

  • You get them from thermal paper receipts.


  • Like I have, I have these receipts from a recent trip.


  • All of these things are coated with Bisphenol A.


  • It goes right into your skin.


  • BPA has been making headlines for years about whether or not it's harming us.

    儘管與美國食品藥物管理局 (FDA) 資助的獨立研究結果有衝突,但核心的問題是:BPA 是難以避免的,因為它是一種堅韌透明且有彈性的塑膠也就是聚碳酸酯的關鍵元素。

  • And while FDA-funded and independent studies have conflicting conclusions, the bigger heart of the issue is this:

    也因為與食物有如此緊密的接觸,正是像 Blumberg 這樣的科學家所擔憂的。

  • BPA is hard to get away from, because it's a key building block in the tough, clear, flexible plastic called polycarbonate.


  • And that proximity to food is what concerns scientists like Blumberg.

    組成塑膠的 BPA 分子是由酯鍵連接,該酯鍵對熱極其敏感。

  • You don't wanna store food in plastics because some fraction of those plastics will leach into your food.


  • The BPA molecules that make up plastic are bound together by what's called an ester bond,

    根據美國疾病管制與預防中心 (CDC) 對 2,517 人所進行的一項檢測指出,估計超過 90% 的美國人的尿液樣本中都驗出 BPA。

  • which is extremely sensitive to heat.

  • So, when you heat up your food in plastic, that heat breaks some of the bonds,

    不只有 BPA。

  • releasing the chemicals into your food.

  • A survey by the CDC of 2,517 people estimated that over 90% of Americans have detectable levels of BPA in their urine.

    還有苯二甲酸酯 — 可以讓塑膠變得有彈性,在加熱時也會滲進食物裡。

  • And BPA isn't alone.

    數百項研究報告已指出 BPA 和苯二甲酸酯與心臟疾病、過胖和第二型糖尿病有關聯。

  • Phthalates, which make plastic flexible, can also leach into food when heated.

    更不用多提 2015 年的一篇報告中指出,苯二甲酸酯和損害兒童神經系統發育是有關係的,這促使美國兒科學會於 2018 年宣佈有小孩的家庭應該全面避免使用塑膠食品容器。

  • And reviews of hundreds of studies have linked BPA and phthalates to heart disease, obesity, and Type 2 diabetes.


  • Not to mention, a 2015 review linked phthalates with impaired neurological development in children,


  • which in 2018 prompted the American Academy of Pediatrics to announce that families should avoid plastic food containers entirely.

  • And other studies on animals, like mice and monkeys,


  • have shown that these chemicals can lead to problems in the lungs, brains, and reproductive organs.

  • This is about the time someone like me would probably panic.

    Blumberg 建議加熱食物時不要使用塑膠,可以選用其他材質的容器。

  • But there are ways you can avoid these chemicals.

    順道一提,不含 BPA 的塑膠容器並不是最好的方法,因為有研究顯示通常用作替代 BPA 的 BPS 和 BPF,對身體可能也有差不多的影響。

  • Blumberg suggests it's best to just stick to heating your food in anything but plastic.


  • Now, quick aside, BPA-free plastic containers aren't the answer,


  • because research suggests that BPS and BPF, the most common replacements for BPA,

  • might have similar effects on your body.

  • Instead, opt for replacements like ceramic or glass containers.


  • You have to do the best you can,


  • and it makes sense to me to do the things that give you the most return for the least effort.

  • And here's the best part.

    如 Blumberg 所說,這些化學物質儲存在脂肪細胞,最終這些細胞會死亡並離開身體系統。

  • Once you reduce exposure, those chemicals slowly leave your body.


  • As Blumberg says, they're stored in fat cells, which eventually die and ultimately leave your system.


  • Don't stress about it. Right.

  • Do your best and make conscious choices to improve things.

There's been a lot of buzz about dubious chemicals in the environment


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【環境教育】常用塑膠瓶嗎?塑膠所含的有害物質有哪些? (The Dangerous Chemicals In Your Plastic Packages)

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    Fibby 發佈於 2019 年 10 月 21 日