Sunday, January 17, 2010

Michael Pollan from a CR perspective Part 2


Not too much: 

From a CRON viewpoint, this seems obvious. But because we are looking at calories as opposed to just volume, there are some caveats here. Leafy vegetables are hard to overeat. They are very high in nutrients, filling, and low in calories. In general though, you want to have smaller than average plates. Become familiar with portion sizes, both the RDA size portions and the portions that you calculate out through your CRON diet software. When I have oats in the morning it is 1/4 of a cup of raw oats. It seems like a small portion until that becomes your mental standard. Especially in the US, the portion sizes have increased significantly over the last 50 years.  

Wait 20 minutes before taking another helping. This gives your body time to register that it is satisfied. In fact, it helps if you do not serve "family style", but prepare the plate of food, and put the rest away.  

Be aware of calorie density and look for lower-calorie (but actual food), substitutes. For example, as a relaxing winter beverage "treat" I substituted my old comfort cocoa with warm milk with nutmeg, saving 120 calories a serving. Spaghetti squash instead of pasta saves about 360 calories per serving (as well having much higher nutrient density). Fruit instead of cake. Turnips rather than potatoes, etc. 

Additionally, we should especially not eat too much of foods that have been highly correlated to increased cancer, heart disease, and other health risks. In no particular order:  

Saturated fats and especially trans-fats have been correlated with increased cholesterol and higher risk of heart disease and stroke.  
Red meat has been linked to cancer.  
Protein consumption of more than .8g per kg per day may negate some of the benefits of the CRON diet. 
Sucrose and Fructose have been correlated with a number of health ills including diabetes, obesity, and heart disease. Foods with high glycemic indexes, which include potatoes, and most refined grains have been strongly correlated with type 2 diabetes, and recently with cancer.

Finally, avoid eating things that are not food. This includes artificial and natural dyes, artificial and natural flavors, hydrogenated fats, polysorbate 60, high fructose corn syrup, food gums etc. Basically, avoid foods that are manufactured rather than grown or raised. While I have not seen studies specifically linking food additives (in general) to disease or health problems, it is just common sense that if you don't even know whether something once was a plant, animal, or mineral, not to put it in your mouth. The FDA, after all, is only saying that there is no proof that these additives are UNSAFE.

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Menu from January 12th

Breakfast:
Coffee with half and half,
Egg on 11grain bread with Artichoke Hearts and Tomato Slices

Lunch:
Finnan Haddie Chowder
Braised Zucchini with Almonds

Dinner:
Parsley Salad,
Parsnips,
Peppers, Tomato and onion stir-fry

Snack:
Yogurt

Free Calories (109)
Brown rice with the stir-fry.


Nutrition Summary:



Calories 1108 , Protein 59g, Carbs 156g, Lipids 33g
Vitamins 100%, Minerals 100%

Tuesday, January 5, 2010

Michael Pollan from a CR perspective Part 1

So, Some people wonder what you should eat on a CRON diet.

I think that Michael Pollan condensed it very well with his statement "Eat food. Not too much. Mostly plants". An oversimplification to be sure, but a nice summary of the current nutritional knowledge. I am going to talk about these ideas from more of a CRON perspective.

Eat Food

Try to get your nutrition through food, not through supplements. There is growing evidence that supplements do not provide the same benefits as the whole foods that contain the same vitamins. This should not really be all that surprising. We evolved eating whole foods, and so our body evolved to maximize beneficial interactions from eating those foods, while minimizing negative effects. Furthermore, new beneficial micronutrients are being discovered all the time, but have always existed in the actual foods. Along the same lines, the more heavily processed (via industrial processes) the food is, typically, the fewer nutrients it has left. Companies that sell these foods on the grocery store shelves often try to hide this fact by being fortified, but that is simply a supplement that has been added to the food, and is no better than taking a supplement yourself.

Eat a wide variety of foods. Try not to rely on a short list of foods that you repetitively eat. Even though swiss chard is amazingly high in potassium (per calorie), you should not eat only swiss chard to get your potassium. Find a number of good sources and rotate through them. The more the better. The rational for this is that all the essential micronutrients are not yet known for humans. It is better to use the RDA list of known micronutrients as an indicator list. If you are consistently getting your RDA through a variety of foods, you stand to have a good chance of having received the benefits of hottest new supplements in the same way that when the benefits of phytochemicals, anti-carcinogens and omega-3 fatty acid came to my awareness, I found that my diet was already rich in these substances.

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Menu Jan 5th
Breakfast
Coffee w/ half and half
Banana
Lunch
Bagel and Lox w/ green olive cream cheese
Spinach salad w/ fresh mozzarella, tomatoes and avocado
Snack
Black grapes
Dinner
3 Crispbreads w/ cheese and tomatoes
Clementine
Nutrition Summary:
Calories 1185, Protein 63g, Carbs 111g, Lipids 61g
Vitamins 92%, Minerals 96%

Sunday, January 3, 2010

Supplements

I am an advocate for getting your daily nutrition through whole foods rather than through supplements. There are a number of reasons for this.

Tthe body is complicated, and we do not even know a complete list of essential nutrients. We are constantly finding new essential micronutrients, anti-oxidants, anti-carcinogens, etc that we were previously unaware of. For example, Vitamin B was once thought to be a single vitamin, but now we believe it to be 8 water-soluble vitamins that affect cell health. Whole foods contain these nutrients already.

Micronutients are complicated. You may (for example) take a Vitamin B12 supplement, but you would be getting cyanocobalamin, which does not occur naturally. The body can convert it to methylcobalamin and adenosylcobalamin, leaving behind cyanide. But, it is almost impossible to know whether the body treats cyanocobalamin exactly the same way that it treats naturally occurring forms of Vitamin B12.

Furthermore, foods are complicated. Oranges, for example are high in Vitamin C. So is taking water fortified with Vitamin C equivalent? A study shows that while the Vitamin C absorbed into the blood plasma was the same for both juice and Vitamin C water was the same, the benefits associated with the vitamin only shows up in the plasma of the juice-drinkers. Furthermore, it should be noted here that drinking juice causes glycemic spikes that is in turn mitigated by dietary fiber, which is abundant in the rest of the fruit.

I do not have confidence that we currently have the knowledge to understand the subtle and complex interaction between the body and micronutrients to rely on supplements. I know that some people feel that because we do know SOME things we ought to do them. For example that we need Vitamin E, and if one is not getting enough Vitamin E, then one ought to take supplements of that vitamin. However, I think that it is better to look at the known vitamins as indicators. If you know you are not getting enough Vitamin E, then you may not be getting enough of some other not-yet-known nutrients. Find a variety of foods that contain Vitamin E and add them to your diet. I think that you are likely to be better off in the long run.

January 1st menu
Calories: 1180
Vitamins: 100%
Minerals: 100%

Breakfast:
Coffee w/ half and half
Braised mushrooms and peppers Omelette
Snack:
Clementines
Dinner:
Finnan Haddie Chowder
Spinach Salad w/ Avocado
Quick tomato sauce over spaghetti sauce
Desert:
Full cream Yogurt w/ Blueberries