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I know, I know, I’ve been MIA forever. Sorry about that folks!!
After my last article, I suffered from major burn out. I was working 60hrs/wk and then on top of that I was trying to make sure I was pumping out new articles regularly. Generally in the morning before work I would start my research of the next topic I would write about, collect data, and then pump out an article. This became a problem because my need for personal time got kicked to the side too much and it said “alright dude! Time to relax!!!”, and so without warning, I kinda went off the radar.
Fret not, though, my faithful followers! I am not gone, I am not out, I am alive! Nutrition and health is what I do, and that will never change, so therefore, this blog will never go away (unless it moves somewhere, but even then I’d announce that) and I’m going to keep on keeping on!
Does this mean I’m going to be adding more material regularly? We’ll see. Right now I’m studying my brain out for my NCBTMB exam, for which I have to know a crazy amount of anatomy and physiology I have previously forgotten over the years. This takes up a good deal of time for me. But I’m hoping that things will get better within the next month or two. Either way, I’m going to do everything I can to start bringing in new articles at least on a semi-regular basis this year. I’m also going to look in to setting up a spiffy Facebook account.
But enough about me, you want to know about the science. Well let’s talk about what’s been going on lately.
Good news for saturated fat!
Just last month an article was published in the BMJ titled Saturated fat is not the major issue. In it, the author argues against the widespread misconception about saturated fats correlating with heart disease. It’s really nice to see this issue gaining more traction in the mainstream literature and even in the media as well. Just recently ABC’s documentary TV show Catalyst ran a two-part program on the same topic, called Heart of the Matter. Part 1: Dietary Villains discusses the history and science of what’s called the diet-heart hypothesis (the idea that eating saturated fat and cholesterol increases the cholesterol in your blood and therefore increases your risk of heart disease). Throughout the first episode, interviews are conducted with experts (most against the diet-heart idea and a few members of government organizations that of course disagree) and they explain what is wrong with the theory, how it started, and what the evidence in the scientific literature really shows. Part 2: Cholesterol Drug War discusses the murky science of statin drugs and how the science shows that despite the hype, if you have never had a heart attack then statins are of no benefit to you.
Of course, heads are spinning in the medical community and those of the old guard that still cling to disproven, unscientific ideas. One doctor has already criticized ABC’s program, claiming that it is dangerous and that it will lead to people quitting statins and dying of heat attacks. Hey doc: what happens in science when the evidence shows something contrary to your old belief? You change your beliefs to reflect the data! I guess he missed that part in med school.
Something else that I recently noticed was this study was published the British Journal of Nutrition. The study compared the effect that dairy (low fat and full fat) had on biomarkers for cardiovascular disease. If you’ve been paying attention, then the results won’t surprise you any: full fat and fermented dairy won out! The biomarkers for cardiovascular disease were actually lower in the group that consumed full fat dairy than those that consumed the low fat dairy! This is just one more piece of evidence that confirms how wrong the diet-heart hypothesis is.
It’s all about the design
This is the diet-heat hypothesis in a nutshell:
- Saturated fat and dietary cholesterol raise blood cholesterol
- Elevated blood cholesterol is seen in people with cardiovascular disease
- Therefore, saturated fat and dietary cholesterol cause heart attacks
One problem: correlation does not prove causation (unless you believe that ice cream sales are linked to homicide). This is a basic rule of science, but it’s something that most researchers seem to forget (how, I have no idea). This is why we have controlled trials like the dairy study I just mentioned. As can be seen, the diet-heart hypothesis is dead and long since disproven, but that doesn’t stop its dedicated defenders from coming out and insisting that correlation somehow proves causation.
Something that continually drives me crazy about the scientific community when it comes to health, medicine, and nutrition is that old theories are clung to as dogma. When the evidence overwhelmingly shows that an idea is wrong, it is ignored only to continue the status quo.
Be Healthy Now! 