8 Comments

I'm no scientist, but I'm guessing LPC is somehow made by splitting or breaking down (the lyso part) PC. I'm allergic to some, but not all, shellfish and I'm scared to try krill oil. Does krill oil have the allergens filtered out? PC is a much cheaper supplement than LPC. Can supplementing PC lead to higher levels of LPC? If so, are there any necessary cofactors for lysing PC? I ask because my mom and dad both succumbed to Alzheimer's, albeit in their 80s.

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I wouldn't trust the krill oil is filtered for allergens, and I wouldn't assume supp. PC would increase LPC in that way, no. As mentioned in the video coverage, your best bet is still the basics (including eating fatty fish). Rarely are supplements necessary, esp if you could be allergic.

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Hey, I also want to say thanks for taking the time to answer me. You popped up in my YouTube feed and I watched a few videos. I was impressed and thought, "I wonder if he has a Substack?" I subscribed instantly. Keep up the good work! I'm 60 and all the things I was taught about good health through the mainstream in the 90s and 2000s are being rewritten. Guys like you are making a difference.

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Thanks, but, haha, isn't krill oil a supplement? I eat sardines once a week. Do they contain appreciable amounts of LPC?

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Krill oil is a supplement. But I didn't say it was necessary. Generally when producing a YouTube video the audience likes action items. Sometimes, this includes supplements. I stand by what I said in the video, but that's still consistent with supplements not being "necessary." Sardines don't have as much as krill oil, but they're great. Once per week isn't that often so one could considering making them more routine? I see little downside to doing so.

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Haha, except they're not the tastiest things on the planet. You have to enjoy what you're eating or what's the point? I guess I'll try. I guess a couple times a week sardines beats Alzheimer's!

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just saw this paper in Nature this week on dietary fructose enhancing tumor growth in vitro and in vivo via increased LPCs...https://www.nature.com/articles/s41586-024-08258-3

I haven't read much about LPC metabolism and mechanism of action but interesting to try to reconcile that with this paper

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LPCs are a diverse group of biomolecules. Long-story short (I've seen the data), the liver can convert fructose into LPCs (again, many diff LPCs) that the tumor can use as substrate. This isn't particularly shocking or contradictory to the Alz LPC data. There's not really much to reconcile. It doesn't mean Krill oil will feed tumors. And keep in mind that a lot of rules of metabolism change when a person has cancer.

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