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cover of episode Does Your “Filtered” Water Still Have Fluoride?

Does Your “Filtered” Water Still Have Fluoride?

2025/6/10
logo of podcast Chasing Life

Chasing Life

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Sanjay Gupta
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Uma Naidoo
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Sanjay Gupta: 关于饮用水中氟化物的问题,我首先要说明的是,大多数普通滤水器无法有效去除氟化物,因为氟化物是一种溶解在水中的矿物质,很难过滤。不过,反渗透和蒸馏是两种可以有效去除氟化物的方法,前者大约能去除80-90%,后者几乎能100%。虽然最近关于氟化物的讨论很多,但实际上,在美国大部分地区,饮用水中的氟化物含量并不足以引起担忧。如果想了解自己所在地区的水中氟化物含量,可以通过水务公司的消费者信心报告或疾病预防控制中心网站查询。关于牙齿保护,含氟牙膏或漱口水能有效保护牙齿。水中加氟曾经是上世纪最伟大的公共卫生成就之一,但自1975年以来,随着含氟牙膏的普及,其额外益处已大大降低。对于儿童,只需米粒大小的牙膏,成人则用豌豆大小的含氟牙膏即可。刷牙后不要立即漱口,让氟化物在牙齿上停留一段时间,促进再矿化,且10-15分钟内不要进食。当然,从水中去除氟化物的影响也需要考虑,有研究预测,如果去除氟化物,未来几年内可能会导致更多的蛀牙。

Deep Dive

Chapters
This chapter explores the effectiveness of water filters in removing fluoride. Most filters don't remove it, but reverse osmosis and distillation are effective methods. The impact of removing fluoride from water is discussed, highlighting potential increases in cavities.
  • Most water filters don't remove fluoride.
  • Reverse osmosis and distillation are effective methods for fluoride removal.
  • Removing fluoride from water may lead to millions of excess cavities.

Shownotes Transcript

A simple question about your filtered water leads to some surprising truths about fluoride. Then: what to eat to keep your brain sharp—Dr. Sanjay Gupta shares the best foods for your memory.

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