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Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

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11–20 of 41 posts

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#11
Is there any actual clear link between dietary DHA and serum DHA? I’m guessing no.

Humans survive on quite a wide range of dietary fat sources and composition. I stopped supplementing with fish oil after realizing there’s lots of “science” and few facts.

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#12

Is there any actual clear link between dietary DHA and serum DHA? I’m guessing no. Humans survive on quite a wide range of dietary fat sources and composition. I stopped supplementing with fish oil after realizing there’s lots of “science” and few facts.

There has to be, since humans can't make it themselves. (Assuming that's true.)

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#13

Is there any actual clear link between dietary DHA and serum DHA? I’m guessing no. Humans survive on quite a wide range of dietary fat sources and composition. I stopped supplementing with fish oil after realizing there’s lots of “science” and few facts.

Fish is not the only source of DHA. Walnuts, acai berry and flaxseeds are also good sources.

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#14

Is there any actual clear link between dietary DHA and serum DHA? I’m guessing no. Humans survive on quite a wide range of dietary fat sources and composition. I stopped supplementing with fish oil after realizing there’s lots of “science” and few facts.

Fish is not the only source of DHA. Walnuts, acai berry and flaxseeds are also good sources.

The only good vegetable source of DHA is some types of algae. The foods you listed contain alpha-linolenic acid, which the human body can convert to EPA and then to DHA, but this is an inefficient process and might not always meet the full requirements for those longer chain omega-3 fatty acids. See:

https://rnd.edpsciences.org/articles/rnd/pdf/2005/05/r5505.p...

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#15
post #2

When you eat oily fish you are eating the same oil that is expelled and inserted into a capsule. So how is the form changed?

Chelation. When you concentrate the oil you can remove impurities there are a lot of in fish. In particular, Mercury and I think Cadmium too impede and reverse myelination, making taking fish oil for the nervous system benefits almost counterproductive.

But eg sardines should not contain much of any heavy metal? Salmon is also pretty low in mercury.

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#16

Is there any actual clear link between dietary DHA and serum DHA? I’m guessing no. Humans survive on quite a wide range of dietary fat sources and composition. I stopped supplementing with fish oil after realizing there’s lots of “science” and few facts.

Fish is not the only source of DHA. Walnuts, acai berry and flaxseeds are also good sources.

They aren't. In order to overcome the omega-6 metabolic preference, you need to consume, at a minimum twice as much omega-3 oils as omega-6, but actually closer to 4x.

Twice as much omega-3 means eliminating olive oil, soy, most nuts, and many other foods. Or, alternatively, downing a pint or so of flax seed every day.

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#17
post #12

Is there any actual clear link between dietary DHA and serum DHA? I’m guessing no. Humans survive on quite a wide range of dietary fat sources and composition. I stopped supplementing with fish oil after realizing there’s lots of “science” and few facts.

There has to be, since humans can't make it themselves. (Assuming that's true.)

They can.

> This finding suggests that when animal foods are wholly excluded from the diet, the endogenous production of EPA and DHA results in low but stable plasma concentrations of these fatty acids.

https://www.ncbi.nlm.nih.gov/pubmed/16087975

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#18

Is there any actual clear link between dietary DHA and serum DHA? I’m guessing no. Humans survive on quite a wide range of dietary fat sources and composition. I stopped supplementing with fish oil after realizing there’s lots of “science” and few facts.

Not sure why this is getting downvoted, it's a valid concern.

Going by this review, I would say that supplementation does work:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4176556/

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#19
post #14

Earlier quoted context omitted.

Fish is not the only source of DHA. Walnuts, acai berry and flaxseeds are also good sources.

The only good vegetable source of DHA is some types of algae. The foods you listed contain alpha-linolenic acid, which the human body can convert to EPA and then to DHA, but this is an inefficient process and might not always meet the full requirements for those longer chain omega-3 fatty acids. See: https://rnd.edpsciences.org/articles/rnd/pdf/2005/05/r5505.p...

More bluntly, ALA supplementation doesn't work:

https://www.ncbi.nlm.nih.gov/pubmed/19269799?dopt=Abstract

Re: Dr. Rhonda Patrick on DHA in Phospholipid Form and the Prevention of Alzheimers

#20
post #12

Earlier quoted context omitted.

There has to be, since humans can't make it themselves. (Assuming that's true.)

They can. > This finding suggests that when animal foods are wholly excluded from the diet, the endogenous production of EPA and DHA results in low but stable plasma concentrations of these fatty acids. https://www.ncbi.nlm.nih.gov/pubmed/16087975

TIL. Thank you.
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