Archive for the 'Lipids' Category

A tale of two studies

The last few studies I’ve posted on here seem to have been designed by their authors to show that low-carb diets aren’t all they’re cracked up to be. Of course none of these studies have used real low-carb diets – they’ve all used diets that are called low-carb, but really aren’t. They’ve set up a low-carb straw man, knocked it down, then crowed about it. These antics have left us all longing to see a study using a real low-carb diet.

Fate has dropped two studies into our hands that clearly demonstrate the superiority of low-carbs diets when matched against the high-fiber, high-cereal diet beloved of so many in the nutritional establishment and even against low glycemic index (Low-GI) diets.

In the same couple of week period two studies came out – one you’ve probably read about; the other you likely haven’t. By combining the data from these studies, we can see how these three diets match up.

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Gary Taubes responds

A couple of weeks ago I posted that Gary Taubes had agree to answer questions from readers of this blog.  Over a hundred readers sent in questions through the comment section.  Many of these questions were actually multiple questions, so Gary ended up with probably 200+ questions to deal with.

I’ve gone through and compiled a list of the most common questions and presented them to Gary.  Here are the questions followed by his responses.

The most commonly asked question was how do Asians and others living a seemingly high-carb existence manage to escape the consequences? Read more »

Carbohydrates are addictive

You think carbohydrates aren’t addictive?  You think it’s easy to give them up?  You don’t think it possible that people might prefer carbs to life?

Think again.

A story appeared in the online version of Time Magazine last year that I read when it came out, put aside to blog about later, then got sidetracked.  A reader sent me a link to it a few days ago, which brought it back to the front of my mind.

The article discusses a study being done in Germany using a carb-restricted diet to fight cancer.  In pre-WWII days, a German scientist, Otto Warburg, received a Nobel Prize for his work in sussing out the fact that cancer cells don’t generate energy the same way that normal cells do.  Cancer cells get their energy, not like normal cells, from the mitochondrial oxidation of fat, but from glycolysis, the breakdown of glucose withing the cytoplasm (the liquid part of the cell).  This different metabolism of cancer cells that sets them apart from normal cells is called the Warburg effect.  Warburg thought until his dying day that this difference is what causes cancer, and although it is true that people with elevated levels of insulin and glucose do develop more cancers, most scientists in the field don’t believe that the Warburg effect is the driving force behind the development of cancer.

But it stands to reason that it can be used to treat cancer that is already growing.  Since cancers can’t really get nourishment from anything but glucose, it stands to reason that cutting off this supply would, at the very least, slow down tumor growth, especially in aggressive, fast-growing cancers requiring a lot of glucose to fuel their rapid growth.

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Talking diet with your doctor

I’m always amazed at the number of comments this blog gets from readers who are worried about discussing health issues with their doctors.  Most are a variant of this composite of many comments I’ve read:

I’ve been on a low-carb diet, and I’m afraid my cholesterol is going to be up a little and my doctor will want to put me on a statin.  How can I show him/her that I’m really on the right track?

Another common variant:

I want to go on a low-carb diet, but I’m sure my doctor will be against it.  What should I tell him/her?

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