Fish Care Tips

Fish Consumption Associated With Brain Shrinkage



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DESCRIPTION: Exposure to mercury during pregnancy appears to influence fetal brain development as detected by decreased size of a newborn’s brain.

I’ve covered mercury in fish before in videos such as Nerves of Mercury (file:///Users/MichaelGreger/Downloads/nutritionfacts.org/video/nerves-of-mercury/index.html), Hair Testing for Mercury Before Consider Pregnancy (file:///Users/MichaelGreger/Downloads/nutritionfacts.org/video/hair-testing-for-mercury-before-considering-pregnancy/index.html), and Fish Fog (file:///Users/MichaelGreger/Downloads/nutritionfacts.org/video/fish-fog/index.html). For more on canned tuna in particular, check out:

β€’ Which Brand of Tuna Has the Most Mercury? (
β€’ Carcinogenic Putrescine (file:///Users/MichaelGreger/Downloads/nutritionfacts.org/video/carcinogenic-putrescine/index.html)
β€’ The Effect of Canned Tuna on Future Wages (file:///Users/MichaelGreger/Downloads/nutritionfacts.org/video/the-effect-of-canned-tuna-on-future-wages/index.html)
β€’ Amalgam Fillings vs. Canned Tuna (file:///Users/MichaelGreger/Downloads/nutritionfacts.org/video/amalgam-fillings-vs-canned-tuna/index.html)
β€’ Mercury in Vaccinations vs. Tuna (file:///Users/MichaelGreger/Downloads/nutritionfacts.org/video/mercury-in-vaccinations-vs-tuna-2/index.html)

What else can we do to protect our newborns? See:

β€’ DDT in Umbilical Cord Blood (
β€’ How Fast Can Children Detoxify from PCBs? (
β€’ The Wrong Way to Detox (
β€’ Diet Soda and Preterm Birth (
β€’ Meat Fumes: Dietary Secondhand Smoke (

But what about the long chain omega-3 DHA in fishβ€”isn’t that necessary for healthy brain development? That’s the topic of my next video, Mercury vs. Omega-3s for Brain Development (

Have a question for Dr. Greger about this video? Leave it in the comment section at and he’ll try to answer it!

Image Credit: redjar, Allison Stillwell, Fenderloving, redjar, matthetube and _paVan_ via Flickr.

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