To put this summary post and, more importantly, this 10-part series in perspective, let’s examine one of the most pervasive pieces of dietary advice given to people worldwide:
“Eating foods that contain any cholesterol above 0 mg is unhealthy.”
- T. Colin Campbell, PhD, author of The China Study.
No summary of this length can begin to fully address a topic as comprehensive as cholesterol metabolism and the pathogenesis of atherosclerosis. In fact, those of us who challenge conventional wisdom often find ourselves needing to do exactly what Frederic Bastiat suggested:
A few months ago, I addressed the role gender plays in how we respond to intermittent fasting. That post sparked a great discussion, and I’ve since received a fair number of emails from readers eager to learn other ways in which gender plays a role in our health and nutrition. One email in particular set me off on a round of research. So, a hat tip to you, Winifred, for giving me something to think, learn, and write about. I hope everyone finds it to be helpful.
As you may know, women and men store and metabolize fat differently from each other, and a 2008 paper (PDF) reviewed the evolutionary reasons for these differences. Here’s a summary of their findings and few other noteworthy factoids:
As I figured it would, last week’s post on fat-adaptation generated a lot of comments and questions. I couldn’t answer all of them (maybe another time), so for today’s post, I tried to collate the most burning questions to arrive at a representative sample. That way I hit the major ones without making this one of those super long posts. If you feel I’ve missed any major ones, feel free to let me know in the comment section.
First up is the most basic of questions: how does one become fat-adapted? Some, probably most, of you have a good idea how to go about doing such a thing, but not everyone. And so, without further ado, let’s get to the questions:
We now know that the oft-repeated “your brain only runs on glucose!” is wrong. I’ve mentioned it before, and anyone who’s taken the time to get fat-adapted on a low-carb Primal eating plan intuitively knows that your brain doesn’t need piles of glucose to work, because, well, they’re using their brain to read this sentence. Obviously, you eventually adapt and find you have sufficient (if not much improved) cognition without all those carbs. That said, some glucose is required, and that’s where people get tripped up. “Glucose is required” sounds an awful lot like “your brain only uses glucose” which usually leads to “you need lots of carbs to provide that glucose.” And that’s the question today’s edition of “Dear Mark” finds itself attempting to answer: how much glucose is required?
Let’s get to it.
While the majority of people who go Primal see their blood lipids improve, a significant minority do not in the short term. They see LDL cholesterol skyrocket, or their total cholesterol increase, and sometimes triglycerides even mysteriously elevate despite a low-carb intake.
What’s going on here? Should you go on statins? Should you add grains back in? Should you start jogging for a couple hours every night? Should you even worry about it?
Before you freak out, let’s go over a couple things:
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