T
tca300
Guest
I might consider it. My PUFA has been <440mg per day for a while now ( under 2 grams for the last few years, and under 5 grams for about 10 years ) Its extremely difficult because the amount of food I have to eat to keep from developing the concentration camp look is way more that I would prefer. If adding cholesterol increases the metabolic rate further I couldn't handle it. I have already had to stop coffee, and lower light exposure.Essential fatty acid deficient. They tend to just say EFAD in the literature.
I did find the study I was thinking of, though it was done on gerbils and it's hard to extrapolate the amount of cholesterol they were getting given they it was a percentage of their food in grams.
Study: Assessment of the Essential Fatty Acid Requirement in Gerbils by Polyunsaturated Fatty Acid Ratio
I think I will just start a new thread to discuss it because I want to tie in some other things. EDIT: Okay this post was still long... so I guess I lied. I was going to throw quotes from the paper in the thread I start.
The study basically says that when the body gets in the state of PUFA deficiency where it starts making Mead acid, adding cholesterol to the diet accentuates this and causes a lot more Mead acid to be made. The relationship between cholesterol and PUFA is quite interesting. We all know how eating PUFA can lower cholesterol as this is the basis for which vegetable oil is recommended for heart disease. I am not an expert on this topic, but I think the reason why vegetable oil lowers cholesterol is because cholesterol is having a protective effect on the body against the PUFA. I'm not sure how it does this, but in the study I linked above the low amount of PUFA combined with supplemental cholesterol seems to lower PUFA even more. The effect was only seen when the gerbil was already in the EFAD "zone". It is possible though that adding more cholesterol than the gerbils were getting would cause that zone to change in the direction where a person can eat a bit more PUFA and still be EFAD. It's speculation of course. However if someone is eating very low PUFA, like @tca300 and a few other forum members, adding the cholesterol would have a large effect on Mead acid production and possibly the other effects of EFAD.
I am going to generalize this, but I think if a person is eating 0.5% of their calories or less as PUFA, so under 1.38g for a person eating 2,500 calories, they would have an effect on Mead acid if taking supplemental cholesterol. Furthermore, if someone is eating 0.25% of their calories or less as PUFA (0.7g of PUFA or less) then they will probably have quite a large effect on Mead acid if they are supplementing cholesterol. If you want to go all out you can add hydrogenated coconut oil (or possibly MCT oil) and some CLA, both of which would potentiate the EFAD further (though I am not sure about the safety of CLA). Infact in this study they had a HCO + cholesterol group. There are studies on the combination of CLA and coconut oil in regards to fat loss.
Below is taken from the study. Notice right around 1% mark the increase in triene:tetraene ratio. At around 0.25% of linoleate in the diet notice how high the ratio is for the hydrogenated coconut oil + cholesterol group. They don't plot the curve for the fat-free and fat-free + cholesterol group, but you can see the the triangles indicating the levels at the far left. The open triangle being around 1.5 and the filled in triangle at 1, and that's at like 0.1% PUFA or lower (almost impossible while eating regular food... like 250mg of PUFA or less). The HCO + Cholesterol group is already higher than the fat-free group at around 0.5% linoleate. Keep in mind this is measuring the triene:tetraene ratio and not the total levels of mead acid. I believe the fat-free + cholesterol group had the highest Mead acid by a small amount, it's just that the addition of HCO displaces some arachidonic acid, which changes the ratio. Both cholesterol groups (HCO + Fat-free) had low levels of various other PUFA's, like in the liver phospholipids for example.
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As for the dose? It's hard to say as the cholesterol in the diet is a percentage of the total weight of the food + minerals. I am going to guess and say that it's between 500mg to 1g of cholesterol for a human. So if someone is going to try the William Brown diet for 6 months or something, try supplementing some cholesterol with it at the same time.