Quote:
Originally Posted by nanjmc
Personally I do feel fruits and vegetables are foods we are meant to eat and have no plans on excluding them from my diet. Also plan personally limiting but not excluding my whole grains.
Most definitely. I agree, but ironically this statement/argument is often used as an argument against lower-carb and Paleo plans, but it's odd as an "argument" because most low-carb and Paleo plans do not discourage fruits and vegetables (and only certain grains).
No legitimate low-carb plan eliminates fruits, vegetables, and or whole grains permanently. They all (even Atkins) suggest that people eat the amount that their body can handle - in Atkins you add back carbs until you stop losing weight and then you back down. One person's appropriate carb level could be 200g (Atkins doesn't set an upper limit, only a lower one - your body's reactions to the carbs is supposed to be your guide).
Most paleo plans encourage abundant fruit and vegetable consumption, but warns that modern fruit and vegetables contains more sugar and less fiber than naturally occuring fruit, so we should compensate by choosing higher fiber, lower sugar produce whenever possible. Over the last 10,000 years or so, we've drastically bred fiber out of and sugar into our fruits and vegetables.
I think it was in Neanderthin or Paleolithic Prescription (and later other sources) that quoted nutritional anthropologists as estimating that paleo humans generally ate on average somewhere around 100 - 200g of fiber per day (and that wild chimpanziees our nearest relative average about 200g) that makes the FDA recommendation of 20 - 30g seem ridiculous.
Even when it comes to grains, the Paleo diets argue that not all grains are created equal. The seedlike psueudograins like quinoa, millet and buckwheat are closer to what might have been available to paleo humans. They also have higher protein and fiber contents and fewer or no anti- or counter-nutrients (substances that deplete specific vitamins or minerals).
Paleo diet books tend to grossly oversimplify because they don't go into what it is about the most modern of foods that is most harmful. As with South Beach, it boils down mostly to sugar, especially quickly digesting sugars (true grains also contain anti- or counter-nutrients that are also an issue, but even so, some grains, especially "older" ones like rice seem to be a more benign grain than "newer" grains like wheat and modern corn).
I think the biggest problem with most "diet plans" from South Beach to Paleo diets, in fact any diet with a popular book attached is that the information is oversimplified - and it has to be or average people would have no interest in reading it.
Oversimplification usually works ok for most folks, but it also lets superstition and myths creep in to the justification for or against a specific food plan.
If we had more nutrition education at the grade school to high school level, I think people would be better prepared in developing and evaluating a sound food plan (or even having one). But even medical doctors get very little formal training in nutrition. We say "see your doctor before begining a diet" but our doctors may be no more knowledgeable on the subject than we are (I've had many doctors admit the fact).
I do believe that obese bodies, especially super obese bodies like my own, work differently than healthy bodies. I think proper nutrition for someone with 200 lbs to lose, is very different than for healthier (average weight) and growing bodies, but there's not a lot of information on specialized nutrition, so we're left with a lot of guesswork.
It's why it still boils down to dieters having to be scientist AND lab rat.
Combined with the fact that we're a culture that seems to like and even prefer extreme, emotional, and controversial rhetoric to information grounded in fact makes our challenge that more daunting.
I love 3FC, because here for the most part, we're willing to talk about not only what we believe, but why we believe it. You can't always do that in the real world without facing a figurative lynching.