Nicotine

如果有一种小小的维生素，可以在孕期为那些无法避免主动或被动吸烟（包括吸二手烟）的母亲和她们未出生的孩子之间搭建一座“防护墙”，那该有多好？俄勒冈健康与科学大学（OHSU）的研究人员发现，维生素C可能正是这样一位“守护天使”，它能够帮助减少吸烟以及二手烟对胎儿健康的损害。 相关研究结果近期发表在Scientific Reports期刊上，论文标题为“Vitamin C supplementation improves placental function and alters placental gene expression in smokers”。论文通讯作者为俄勒冈健康与科学大学俄勒冈国家灵长类动物研究中心神经科学教授Eliot Spindel博士。 众所周知，无论是主动吸烟还是长期暴露于二手烟环境中，都如同给胎儿的成长之路布满了障碍，尼古丁和其他有害化学物质会穿过胎盘，影响到宝宝的肺部、大脑、肾脏和血管等器官的正常发育。因此，这些“小烟民”未来的生活中往往会出现肺功能问题。 在这项临床研究中，研究人员随机选取了两组在怀孕期间无法戒烟或不可避免接触二手烟的女性参与。所有参与者都服用了含有60毫克维生素C的标准产前维生素，但其中一组还额外服用了500毫克的维生素C。 然后，他们使用一种叫做多普勒超声波（Doppler ultrasound）的技术来测量脐带血流，结果令人惊喜：维生素C不仅有助于改善吸烟孕妇的血流，使其更接近非吸烟孕妇的水平，而且还可能改善了胎盘的整体功能，即使对于那些主要受到二手烟影响的孕妇也是如此。 各组胎儿/胎盘重量比及其与5岁肺功能的关系 Spindel博士解释道：“我们之前在非人灵长类动物身上看到的数据表明，维生素C可以抵消一些由吸烟引起的负面影响，这促使我们在人类中进行了这项研究。虽然维生素C不能解决所有的问题，但它确实能在某些方面提供帮助，特别是对于那些无法完全避免烟草烟雾暴露的孕妇。” 尽管大力倡导戒烟，并尽量避免暴露于二手烟环境中，但仍有许多女性在怀孕期间继续吸烟或处于二手烟环境中，这对母亲和宝宝的健康构成了威胁。 McEvoy教授，OHSU医学院儿科教授，指出：“尼古丁非常容易让人上瘾，有些人因为遗传因素等原因，很难戒掉这个习惯。而对于那些生活在吸烟者身边的人来说，避免二手烟几乎是不可能的任务。”她补充说，“我们之前的其他研究表明，接受维生素C治疗的女性所生的孩子，在3个月和12个月时的肺功能测试中有明显改善，即使到了5岁，这种改善仍然存在。” 然而，重要的是要认识到，尽管维生素C可以帮助改善呼吸系统的状况，但它并不能消除吸烟或二手烟带来的所有风险，如早产、脑部发育减弱以及整体生长速度降低等问题。因此，最好的选择仍然是尽可能避免在怀孕期间吸烟或接触任何含尼古丁的产品，包括电子烟，同时也要尽量远离二手烟环境。 参考资料： Lyndsey E. Shorey-Kendrick et al. Vitamin C supplementation improves placental function and alters placental gene expression in smokers. Scientific Reports, 2024, doi:10.1038/s41598-024-73005-7. 本文仅用于学术分享，转载请注明出处。若有侵权，请联系微信：bioonSir 删除或修改！ 点击下方「阅读原文」，前往生物谷官网查询更多生物相关资讯~

Magazines like Seventeen, Cosmopolitan and Vogue Partnering with Philip Morris to Promote IQOS and Zyn WASHINGTON, Dec. 19, 2024 /PRNewswire/ -- The Campaign for Tobacco-Free Kids is joining more than 50 public health advocates from 10 countries in calling on Hearst Communications Inc. and Condé Nast - two of the world's largest media companies – to stop promoting tobacco and nicotine products to kids online. The call to action comes as Hearst and Condé Nast magazines like Seventeen, Cosmopolitan, Vogue and Glamour have been partnering with Philip Morris International to promote IQOS heated cigarette and Zyn nicotine pouch products to hundreds of thousands of young people under the age of 25. The promotions have been published online in numerous countries and regions including Spain, Eastern Europe, Mexico, Latin America and the United States. In the U.S., paid advertisements for Zyn, an addictive nicotine pouch, were observed paired with articles such as "34 Best Gifts for Teenage Girls" and "Best Christmas Movies for Teens," on websites for Seventeen and Cosmopolitan. In response to these promotions, the Campaign for Tobacco-Free kids, along with five other organizations, sent letters earlier this year to Hearst and Condé Nast, urging them to immediately terminate their partnerships with Philip Morris. Yet, the companies continue to advertise Philip Morris products to young people online. Last week, advocates from around the world participated in a global week of action on social media to call on publishers to stop targeting young people. According to evidence collected by the Campaign for Tobacco-Free Kids, magazines such as Vogue, GQ, Glamour, ELLE and Esquire have been partnering with Philip Morris in numerous countries to promote IQOS as a trendy lifestyle accessory on social media platforms like Facebook and Instagram. Paid content advertising tobacco and nicotine products is banned under the current advertising policies of Meta, the parent company of Facebook and Instagram. Online advertising of tobacco products like IQOS is illegal in Spain, where many of the paid advertisements are running, according to the letters. The letters explain that Condé Nast and Hearst are helping Philip Morris skirt Meta policies on tobacco advertising and undermine advertising laws in at least one country. "It is absolutely outrageous that magazines like Seventeen are helping one of the world's largest tobacco companies reach teens and young adults online," said Smita Baruah, executive vice president of global tobacco control at the Campaign for Tobacco-Free Kids. "By allowing Philip Morris to advertise IQOS and Zyn through popular lifestyle magazines, Hearst and Condé Nast are exposing their readers to harmful and addictive products meant to hook to a new generation." Philip Morris launched IQOS in Japan 10 years ago, and the product is now widely available in many countries. It is expected to launch in the United States imminently. For years, IQOS has been extensively marketed on social media to and by young people. In 2022, Philip Morris spent $16 billion to purchase Swedish Match, manufacturer of Zyn, a nicotine pouch that is sold in appealing flavors and has been aggressively promoted on social media. "Tobacco companies like Philip Morris International are constantly seeking new ways to reach youth – it's time for Hearst and Condé Nast to stop allowing tobacco companies to exploit their readers and end their partnership with Big Tobacco," added Baruah. SOURCE Campaign for Tobacco-Free Kids WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED