Marks Daily Apple
Serving up health and fitness insights (daily, of course) with a side of irreverence.

Archive for the ‘ Dear Mark ’ Category

12 May

Dear Mark: Cooking Omegas

eggs2Dear Mark,

What are your thoughts on Barry’s suggestion that there is some sort of problem in cooking O-3 enhanced eggs? I’ve seen similar things related to flax seed oil and roasted & toasted walnuts, etc. What is the bottom line on cooking with omega-3s?

Thanks to Ed and others who offered up similar questions in response to last week’s Enough Omegas? post.

Polyunsaturated fats (which include omega-3 fatty acids) are, indeed, very prone to oxidation when exposed to heat, light or oxygen. This oxidation essentially renders them rancid to some extent, and this will result in less appealing taste (and smell) as well as decreased nutritional value. Add to that the damage imposed by the resulting free radicals, and that “healthy” food has now become a health hazard.

5 May

Dear Mark: Nuts

nuts1Dear Mark,

Can you give me more explanation about nuts and seeds? I eat a ton of them and am always confused about which ones are actually nuts and which are seeds and which are legumes. Does it make any difference if you eat them whole, roasted, raw or as nut butter?

Thanks to reader Charlotte for these questions in response to last week’s “Get Primal” post. The classification question does get tricky.

28 Apr

Dear Mark: Gene Expression

gene1 1I received tons of emails from last week’s Gene Expression: Location, Location, Location post. Thanks to everybody for their feedback and questions. In the comment section of last week’s post, Ed was interested in other concrete examples of gene expression (the ability of a gene to produce a biologically active protein). In personal emails, others asked for more explanation of the difference between genes and gene expression. Still others wanted to hear more about the interaction between their gene expression and lifestyle choices. Given the range of reader questions this week, I thought I’d reframe this week’s Dear Mark to include more of an overview of this recurring MDA theme. There’s a lot to be said on the subject, and I promise this post won’t be the last word on it. Nonetheless, there’s no time like the present to give a proper introduction and dive right in.

Let me just say that gene expression is one of my favorite areas of interest, and it’s truly at the heart of the Primal Blueprint. In fact, it’s the real beauty of it as well. It confirms that the day-to-day choices we make have incredible impact. And we can influence gene expression to a far greater degree than anyone ever thought possible.

21 Apr

Dear Mark: Alcohol

martiniDear Mark,

I keep hearing news stories about how alcohol is good for you, but I wonder how that figures in with the Primal Blueprint. What’s your take? Can I have that beer when I come home from a long hard day at work and not feel guilty?

It’s true that we tend to hear a lot about a given piece of advice publicized again and again with a slightly different spin from varied studies. While researchers will often pursue subjects that are “timely,” I sense the media (popular and even medical journals to some extent) is more the influence in this case.

14 Apr

Dear Mark: Beans/Legumes

beansDear Mark,

I’m a former vegetarian who still enjoys cooking with all kinds of beans. I don’t see them in any of the MDA recipes. What’s your take on them?

Legumes (beans, lentils, chickpeas, split peas, etc.) aren’t, by any means, the worst thing you can eat, but they don’t make the ideal meal either. In my estimation, legumes fall into the “O.K.” category with wine, chocolate, cheese and other dairy, etc.

On the upside, legumes offer protein, and they tend to be good sources of several minerals like potassium and magnesium. On the downside, they offer only a moderate at best amount of protein (generally 4-9 grams per ½ cup serving). As the How to Eat Enough Protein post showed, legumes’ protein content is dwarfed by the 28 grams you’d get from a cup of cottage cheese or the 50+ grams you’d get from six ounces of several meats. And this relatively small amount of protein comes with a hefty carb content: as high as 28 grams for that same ½ cup serving!

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