
Any diet that claims calories don't matter, forget it. Any diet
that tells you they have a magic ratio of foods, ignore it. Any diet that
tells you any one food source is evil, it's a scam. Any nutrition plan that tells you
it will work for all people all the time no matter the circumstances, throw
it out or give it to someone you don't like!
One school, I would say the 'old school' of nutrition, maintains weight loss
or weight gain is all about calories, and "a calorie is a calorie," no matter
the source (e.g., carbs, fats, or proteins). They base their position on various
lines of nutritional evidence to come to that conclusion.
The other school, I would call more the 'new school' of thought on the issue,
would state that gaining or losing weight is really about where the calories
come from (e.g., carbs, fats, and proteins), and that dictates weight loss
or weight gain. Meaning, they feel, the "calorie is a calorie" mantra of the
old school is wrong. They too come to this conclusion using various lines
of evidence.
This has been an ongoing debate between people in the field of nutrition,
biology, physiology, and many other disciplines, for decades. The result of
which has led to conflicting advice and a great deal of nutriton confusion by the general
public, not to mention many medical professionals and other groups.
Before I go any further, two key points that are essential to understand about
any unified theory exspecially nutrition:
A good unified theory is simple, concise, and understandable even to lay people.
However, underneath, or behind that theory, is often a great deal of information
that can take up many volumes of books. So, for me to outline all the information
I have used to come to these conclusions, would take a large book, if not
several and is far beyond the scope of this article.
A unified theory is often proposed by some theorist before it can even be
proven or fully supported by physical evidence. Over time, different lines
of evidence, whether it be mathematical, physical, etc., supports the theory
and thus solidifies that theory as being correct, or continued lines of evidence
shows the theory needs to be revised or is simply incorrect. I feel there
is now more than enough evidence at this point to give a unified theory of
nutrition and continuing lines of evidence will continue (with some possible
revisions) to solidify the theory as fact.
"A calorie is a calorie"
The old school of nutrition, which often includes most nutritionists, is a
calorie is a calorie when it comes to gaining or losing weight. That weight
loss or weight gain is strictly a matter of "calories in, calories out." Translated,
if you "burn" more calories than you take in, you will lose weight regardless
of the calorie source and if you eat more calories than you burn off each
day, you will gain weight, regardless of the calorie source.
This long held and accepted view of nutrition is based on the fact that protein
and carbs contain approx 4 calories per gram and fat approximately 9 calories
per gram and the source of those calories matters not. They base this on the
many studies that finds if one reduces calories by X number each day, weight
loss is the result and so it goes if you add X number of calories above what
you use each day for gaining weight.
However, the "calories in calories out" mantra fails to take into account
modern research that finds that fats, carbs, and proteins have very different
effects on the metabolism via countless pathways, such as their effects on
hormones (e.g., insulin, leptin, glucagon, etc), effects on hunger and appetite,
thermic effects (heat production), effects on uncoupling proteins (UCPs),
and 1000 other effects that could be mentioned.
Even worse, this school of thought fails to take into account the fact that
even within a macro nutrient, they too can have different effects on metabolism.
This school of thought ignores the ever mounting volume of studies that have
found diets with different macro nutrient ratios with identical calorie intakes
have different effects on body composition, cholesterol levels, oxidative
stress, etc.
Translated, not only is the mantra "a calorie us a calorie" proven to be false,
"all fats are created equal" or "protein is protein" is also incorrect. For
example, we no know different fats (e.g. fish oils vs. saturated fats) have
vastly different effects on metabolism and health in general, as we now know
different carbohydrates have their own effects (e.g. high GI vs. low GI),
as we know different proteins can have unique effects.
The "calories don't matter" school of thought
This school of thought will typically tell you that if you eat large amounts
of some particular macro nutrient in their magic ratios, calories don't matter.
For example, followers of ketogenic style diets that consist of high fat intakes
and very low carbohydrate intakes (i.e., Atkins, etc.) often maintain calories
don't matter in such a diet.
Others maintain if you eat very high protein intakes with very low fat and
carbohydrate intakes, calories don't matter. Like the old school, this school
fails to take into account the effects such diets have on various pathways
and ignore the simple realities of human physiology, not to mention the laws
of thermodynamics!
The reality is, although it's clear different macro nutrients in different
amounts and ratios have different effects on weight loss, fat loss, and other
metabolic effects, calories do matter. They always have and they always will.
The data, and real world experience of millions of dieters, is quite clear
on that reality.
The truth behind such diets is that they are often quite good at suppressing
appetite and thus the person simply ends up eating fewer calories and losing
weight. Also, the weight loss from such diets is often from water vs. fat,
at least in the first few weeks. That's not to say people can't experience
meaningful weight loss with some of these diets, but the effect comes from
a reduction in calories vs. any magical effects often claimed by proponents
of such diets.
Weight loss vs. fat loss!
This is where we get into the crux of the true debate and why the two schools
of thought are not actually as far apart from one another as they appear to
the untrained eye. What has become abundantly clear from the studies performed
and real world evidence is that to lose weight we need to use more calories
than we take in (via reducing calorie intake and or increasing exercise),
but we know different diets have different effects on the metabolism, appetite,
body composition, and other physiological variables...
Brink's Unified Theory of Nutrition
...Thus, this reality has led me to Brink's Unified Theory of Nutrition which
states:
"Total calories dictates how much weight a person gains or loses; macro nutrient
ratios dictates what a person gains or loses"
This seemingly simple statement allows people to understand the differences
between the two schools of thought. For example, studies often find that two
groups of people put on the same calorie intakes but very different ratios
of carbs, fats, and proteins will lose different amounts of bodyfat and or
lean body mass (i.e., muscle, bone, etc.).
Some studies find for example people on a higher protein lower carb diet lose
approximately the same amount of weight as another group on a high carb lower
protein diet, but the group on the higher protein diet lost more actual fat
and less lean body mass (muscle). Or, some studies using the same calorie
intakes but different macro nutrient intakes often find the higher protein
diet may lose less actual weight than the higher carb lower protein diets,
but the actual fat loss is higher in the higher protein low carb diets. This
effect has also been seen in some studies that compared high fat/low carb
vs. high carb/low fat diets. The effect is usually amplified if exercise is
involved as one might expect.
Of course these effects are not found universally in all studies that examine
the issue, but the bulk of the data is clear: diets containing different macro
nutrient ratios do have different effects on human physiology even when calorie
intakes are identical (1,2,3,4,5,6,7,8,9,10,11).
Or, as the authors of one recent study that looked at the issue concluded:
"Diets with identical energy contents can have different effects on leptin
concentrations, energy expenditure, voluntary food intake, and nitrogen balance,
suggesting that the physiologic adaptations to energy restriction can be modified
by dietary composition."(12)
The point being, there are many studies confirming that the actual ratio of
carbs, fats, and proteins in a given diet can effect what is actually lost
(i.e., fat, muscle, bone, and water) and that total calories has the greatest
effect on how much total weight is lost. Are you starting to see how my unified
theory of nutrition combines the "calorie is a calorie" school with the "calories
don't matter" school to help people make decisions about nutrition?
Knowing this, it becomes much easier for people to understand the seemingly
conflicting diet and nutrition advice out there (of course this does not account
for the down right unscientific and dangerous nutrition advice people are
subjected to via bad books, TV, the 'net, and well meaning friends, but that's
another article altogether).
Knowing the above information and keeping the Unified Theory of Nutrition
in mind, leads us to some important and potentially useful conclusions:
An optimal diet designed to make a person lose fat and retain as much LBM
as possible is not the same as a diet simply designed to lose weight.
A nutrition program designed to create fat loss is not simply a reduced calorie
version of a nutrition program designed to gain weight, and visa versa.
Diets need to be designed with fat loss, NOT just weight loss, as the goal,
but total calories can't be ignored.
This is why the diets I design for people-or write about-for gaining or losing
weight are not simply higher or lower calorie versions of the same diet. In
short: diets plans I design for gaining LBM start with total calories and
build macro nutrient ratios into the number of calories required. However,
diets designed for fat loss (vs. weight loss!) start with the correct macro
nutrient ratios that depend on variables such as amount of LBM the person
carries vs. bodyfat percent , activity levels, etc., and figure out calories
based on the proper macro nutrient ratios to achieve fat loss with a minimum
loss of LBM. The actual ratio of macro nutrients can be quite different for
both diets and even for individuals.
Diets that give the same macro nutrient ratio to all people (e.g., 40/30/30,
or 70,30,10, etc.) regardless of total calories, goals, activity levels, etc.,
will always be less than optimal. Optimal macro nutrient ratios can change
with total calories and other variables.
Perhaps most important, the unified theory explains why the focus on weight
loss vs. fat loss by the vast majority of people, including most medical professionals,
and the media, will always fail in the long run to deliver the results people
want.
Finally, the Universal Theory makes it clear that the optimal diet for losing
fat, or gaining muscle, or what ever the goal, must account not only for total
calories, but macro nutrient ratios that optimize metabolic effects and answer
the questions: what effects will this diet have on appetite? What effects
will this diet have on metabolic rate? What effects will this diet have on
my lean body mass (LBM)? What effects will this diet have on hormones; both
hormones that may improve or impede my goals? What effects will this diet
have on (fill in the blank)?
Simply asking, "how much weight will I lose?" is the wrong question which
will lead to the wrong answer. To get the optimal effects from your next diet,
whether looking to gain weight or lose it, you must ask the right questions
to get meaningful answers.
Asking the right questions will also help you avoid the pitfalls of unscientific
poorly thought out diets which make promises they can't keep and go against
what we know about human physiology and the very laws of physics!
There are of course many additional questions that can be asked and points
that can be raised as it applies to the above, but those are some of the key
issues that come to mind. Bottom line here is, if the diet you are following
to either gain or loss weight does not address those issues and or questions,
then you can count on being among the millions of disappointed people who
don't receive the optimal results they had hoped for and have made yet another
nutrition "guru" laugh all the way to the bank at your expense.
Any diet that claims calories don't matter, forget it. Any diet that tells
you they have a magic ratio of foods, ignore it. Any diet that tells you any
one food source is evil, it's a scam. Any diet that tells you it will work
for all people all the time no matter the circumstances, throw it out or give
it to someone you don't like!
RESOURCE BOX: See more excellent bodybuilding, fat loss, and sports nutrition
articles from Will Brink here:
http://www.brinkzone.com/onlinearticles.html
And see Will's other websites here:
http://www.dietsupplementsreview.com
http://www.musclebuildingguide.com