Nutrition Facts with Dr. Greger NutritionFacts Grab Bag 31
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Dec 4, 2025 Christine Dennis, PhD, a senior research scientist at NutritionFacts.org, dives into the potential dangers of turmeric supplements, highlighting their link to liver toxicity. She explains that enhanced bioavailability through substances like piperine can raise health risks. Additionally, the discussion covers the environmental impacts of fish consumption, revealing how pollutants might offset their benefits. Dennis also warns about the neurotoxic risks associated with pawpaw fruit, linking it to serious neurological conditions. Culinary turmeric emerges as the safer alternative.
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Contaminants Can Cancel Fish Benefits
- Industrial pollutants in seafood can negate fish's nutritional benefits by raising toxic exposure above safe limits.
- Farmed salmon generally carries much higher levels of PCBs, dioxins, and other contaminants than wild-caught salmon.
Farming And Fraud Drive Exposure
- Farmed salmon often shows over ten times more PCBs and dioxins than wild salmon due to contaminated fish feed.
- Mislabeling is common, so consumers may unknowingly buy farmed salmon sold as wild-caught.
Limit Seafood Frequency And Check Labels
- Avoid frequent supermarket salmon consumption and heed local advisories to limit exposure to PCBs and dioxins.
- Favor labeled, tested seafood and support better labeling to reduce unnecessary contaminant intake.
