I've conducted a small personal experiment and only ate one type of fat along with my meals - each for 2 weeks. Using cornometer, I made sure the calories were virtually the same.
Olive oil: Great energy, warm hands
Lard: Energy okay, body doesn't emit so much heat, but hands still warm
Ghee and coconut oil: no energy, cold hands, freezing all the time
What's the deal? I thought especially the MCTs in coconut oil are supposed to be thermogenic? And why does olive oil make me produce so much heat?
I know ghee and coconut oil are the better choices, but I don't like the cold hands at all. Any ideas?
asked byThomy (2384)
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on July 18, 2012
at 10:05 AM
Assuming all variables were controlled (like mindmt asked) I think a possible explanation for this result is the greater effect of oleic acid on thermogenesis.
First of all, I think the effect of medium chain triglycerides as consumed in coconut oil and butter on increasing metabolism/thermogenesis has been overblown by many. Such an increase likely occurs, but it appears to be short lived.
Anyway, It's been shown in rats that oleic acid appears to increase thermogenesis relative to saturated fat and linoleic acid (here and here). In humans, oleic acid seems to increase thermogenesis relative to saturated fatty acids (here and here), but compared to linoleic acid it's about the same (here and here)
Of course, another factor that could be involved is the potential thermogenesis increasing phenolic compounds in olive oil, as this study suggests.
So that's my theory. Interestingly enough, my own observations put butter on the top of my heat list, but I tend to eat a lot butter because, well, I just love the stuff. I guess that would be a confounding variable.
on July 18, 2012
at 09:13 AM
Better write a thesis on MUFA being the optimal fat for thermogenesis?... and looks like Sat fat inhibits, maybe. Nevertheless, I'm not inclined to binge on olive oil (or lard) due to the significant PUFA payload. Have you scientifically controlled all other variables/potential confounding factors?
Olive Oil: 14% (Saturated Fat); 9% (PUFA); 77% (MUFA)
Lard: 41% (Saturated Fat); 12% (PUFA); 47% (MUFA)
Ghee / Clar Butter: 66% (Saturated Fat); 4% (PUFA); 30% (MUFA)
Coconut Oil: 92% (Saturated Fat); 2% (PUFA); 6% (MUFA)