04/28/2026
Isn’t fish good for you? I hear this question a lot. And of course it’s better than eating a bacon double cheeseburger, but when you hear Karen’s story (and I see many others just like her) there’s more to this fish story.
A typical piece of salmon contains between 30 and 40% saturated fat. Yes, it does have omega-3 fatty acids but to reduce your risk of heart disease you want to eliminate sources of saturated fat that lead to raised LDL cholesterol, which leads to plaque development. In addition, the animal protein, whether it’s from beef, chicken, or fish, leads to the production of TMAO, which further contributes to plaque development. in fact, red meat requires our gut bacteria to create TMAO, but fish contains high levels of preformed TMAO, which contributes to plaque development.
Karen story is not unusual. She looks healthy, she’s a healthy weight, she’s active, she ate a typical Mediterranean, diet, rich in fruits, vegetables, whole grains, legumes, and fish, no red meat or chicken. Despite this, she had persistent elevated levels of total cholesterol around 220 and elevated levels of LDL in the 120s. The only change she made was giving up fish and her total cholesterol dropped from 216 to 159. Her LDL cholesterol dropped from 126 to 87!
The other health concern with fish nowadays is the level of contamination in fish from our polluted oceans. Unfortunately, runoff from agriculture, chemicals from flame retardants, byproducts from incinerators, heavy metals, and micro plastics… all end up being consumed by fish and if we consume the fish, we’re getting them too.
So if you feel like you’re eating a healthy diet like the typical Mediterranean style, try giving up the fish and olive oil and see what happens to your LDL.
If you want help with this, or you want to be part of a community doing it together, which is lots of fun, join the Plant Docs community. Come cook with us for free every month, join our jumpstart monthlong program, or check out our foods to fight cancer that starts May 6.
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