RED MEAT, WHITE LIES
In Old English times, the term “meat” meant any edible food. During the
medieval period this definition narrowed to only land animals. This inevitably
arose out of religious dictums forbidding consumption of certain land animals
on particular days of observance. Some maintain that definition today and some
take it a step further, employing the term “meat” to denote only red meat,
e.g., beef or lamb. It’s astounding how arbitrary our definitions of things
are. Even more fascinating, a capricious definition, as opposed to the true
nature of the entity, can wield tremendous influence over peoples’ reaction to
it. Somehow society has generated a conception of red meat as bad and white
meat as good. The pork industry, endeavoring to capitalize on this misguided,
health-crazed vilification of red meat, now purports pork as the “new white
meat”.
By definition, meat is animal flesh, any animal, particularly its muscular
tissue. I emphasize the muscular structure because with the exception of organ
meats, when you eat beef, chicken, pork, lamb, venison, fish, snails, crabs, or
even a rattlesnake, you are consuming the muscular structure of that animal.
Nevertheless, current dichotomous thinking distinguishes “meat” from
non-meat by color. Red meat is red because of myoglobin, an iron containing
protein that transfers oxygen from the blood to the muscles of the animal.
Muscles which are used more will contain more myoglobin, (since they require
more oxygen), and will be redder or darker in color. Take chicken for example.
A chicken uses its legs far more than it’s breast muscles and hence, they are
darker. Moreover, there are different kinds of myoglobin and some are redder
than others. pH, (a measure of acidity vs. alkalinity), also affects meat
color. Beef is redder than pork because of the amount and types of myoglobin
and the pH. And these chemical differences are not good or bad, healthy or
unhealthy.
For those that define “meat” as only red meat, color is only the surface
discriminator. The underlying differentiator is usually fat content and
cardiovascular health. The whole fat issue and its relation to health is a
complex web whose spider is fat-phobia. There are many types of fats,
(polyunsaturated, saturated, monosaturated, trans fatty acids, etc.), which in
turn have a variety of effects on the body. The average person doesn’t take the
time to learn all the details. It’s easier to just lump “fat” into one generic
concept and then avoid it like the plague, hence, fat-phobia.
Polyunsaturated fat, monosaturated fat, and Omega-3 fatty acids have been
purported to reduce cholesterol, and possibly prevent cancer and lower blood
pressure. Saturated fat is the fat that can raise cholesterol levels.
Thus, it is not the fat content per se of any particular meat that is
important, but the amount of saturated fat. According to a study from the
Archives of Internal Medicine, (Vol. 159, June 28, 1999, p. 1331-1338),
subjects consuming lean red meat and subjects consuming only white meat, had no
differences in their cholesterol levels. This was because the discrepancy in
their saturated fat intake was too small to make a difference on their serum
cholesterol levels. (Three ounces of round steak has about 3 grams of saturated
fat while three ounces of skinless chicken breast has one). This is not an
isolated study.
Moreover, while some cuts of meat are higher in saturated fat, all red meat
is high in protein, iron, B vitamins, zinc, choline, and selenium, a mineral
implicated in preventing cancer and improving cardiovascular health. Ounce for
ounce beef has twice the thiamine and riboflavin, three times the iron, five
times the zinc, and seven times the B12 of chicken. Beef also contains
conjugated linoleic acid, (CLA), which has inhibited cancer growth in
laboratory animals. Half of the fat in beef is monosaturated fat, (like olive
oil), which has been hailed as having many health benefits. Less than half of
the total fat in beef is saturated fat and one third of it is stearic acid, a
particular saturated fat that has no effect on cholesterol.
Now granted, if your goal is to lose weight, all fats are equally high in
calories. Even I would recommend leaner cuts and in moderation. But if your
concern is heart disease, keep in mind though that numerous other factors,
other than fat, play a role. Most physicians agree that genetic makeup is a
significant determinant. Some people’s biochemistry will produce higher amounts
of cholesterol no matter what they eat. Conversely, we all know individuals who
have ate rich diets, engaged in other risky practices and lived to a ripe old
age. Genes are a whimsical and unfair bestowment of fate.
Genetics aside, your age, sex, physical activity, stress, weight, substance
use, environmental pollutants, personality, and other medical conditions, all
influence whether you’ll be visiting a cardiologist someday. Yet I’ve met
individuals who ignore many controllable factors, who smoke or drink to excess,
and yet incessantly monitor their dietary fat. Trust me, all the fish and
vegetables in the world will not save you if genetics are not on your side and
you’re ignoring all of the other variables.
In summary, our beliefs about certain foods, which in turn drive our
behaviors, are often arbitrarily influenced by socio-cultural factors, dietary
fads, advertising, misinformation, ignorance, etc. Although excessive fat
consumption may pose some health risks, our society has elevated its
malevolence to a disproportionate degree. Meat is not poison. It is a
nutritious food that can be salubriously consumed in moderation. |