Thursday, July 26, 2012

Macronutrient extreme diets may not be healthy.

How our bodies use and store the energy of the calories of the macronutrients (carbohydrates, proteins and fats) we put into it is a complex process. The diet industry has been pretty good at confusing most of us by its use of these complexities to justify their method. We have every end of the spectrum when it comes to diets touting specific diet ratios of these macronutrients to help us lose weight: low-fat/high carbohydrate, low carbohydrate/high protein, low carbohydrate/high fat, etc. They all claim they work and show scientific research they work, how can that be?

With calorie control, most diets will work to lose weight, for a short time. Also some people, no matter what macro nutrient ratio they use can lose weight (hint: it’s not the diet, but the genetics their mom and dad gave them that is working for them). Also remember when most people talk about diet success, they are referring to weight loss. Weight loss is healthy for us, if it is the excess body fat above a healthy range we carry around. But what if I just lost muscle mass? I would be losing weight, but do you see where this is not healthy. So a diet successful in losing weight may not always be healthy for us. Also understand even if we do lose some of the excess storage fat with our diet, it may still not be healthy for us due to increase in other health risk factors.

A recent study in the June 27, 2012 issue of the Journal of Medical Association demonstrated some of the ill health effects of these restriction type diets. Those people on these restriction diets have been found to have increase in heart disease risk factors, chronic inflammatory markers and stress hormone production (none of those are good things if you want to live a long healthy life). Senior author Dr David S Ludwig (New Balance Foundation, Obesity Prevention Center) told heartwire in an interview (this may be some of the best suggestions about diet in just a few sentences I have ever read):

"Extreme restriction of fat or carbs can have bad effects. The best long-term approach will be to avoid restriction of any major nutrient--either fat or carbohydrate--and instead focus on the quality of nutrients. This is not to say that the number of calories isn't important, but it's now saying we should also pay attention to the quality of those calories. So the argument that the food industry likes to make--that all foods can be part of a healthful diet as long as you watch calories--is really misleading at best. Relatively unprocessed, low-glycemic-index foods are best, things that our grandmother would recognize. Choose relatively unprocessed foods whenever you can and cut back on white bread, white rice, potato products, prepared breakfast cereals, and, of course, concentrated sugars."

So as we can see that restriction diets may help us lose weight, but they may be making us unhealthier. What is the proper ratio of macronutrients one should be using? This is going to vary for all of us (again due to that genetic thing mom and dad passed on to you). Typically a general range to start with is 50% carbohydrates, 30% proteins, and 20% fats. But remember each calorie of the macronutrient is not the same. Carbohydrates should come from low glycemic index foods (think the natural stuff not the processed stuff that comes in a box or a bag). Proteins should be from lean sources and from multiple sources (think fish, chicken, turkey, and some red meat). Fats need to be of the monounsaturated, polyunsaturated and Omega 3 fatty acid type, while avoiding the saturated and trans fat types. Then you can play with the ratios “a little” to see if it helps you feel better and get a little better weight control. When we say “a little”, we mean probably no more the 5-10% any one direction with any one macronutrient. Extremes of anything usually are never healthy for us and a diet pushing the macronutrient ratios to extremes are no exception to this simple healthy rule to follow.

1 comment:

  1. This is a great article, and a great topic to explore. Thanks for sharing.

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