We've been told for years that a low fat, high grain diet is the healthiest diet. But is this true? Here are some notes on the importance of fat, as copied from this blog:
"Going around the blogosphere is a recent excerpt from the author's of Protein Power, Michael and Mary Dan Eades, who have written The 6-Week Cure for the Middle-Aged Middle: The Simple Plan to Flatten Your Belly Fast!, on the necessity of saturated fat:
1) Improved cardiovascular risk factors
Though you may not have heard of it on the front pages of your local newspaper, online news source, or local television or radio news program, saturated fat plays a couple of key roles in cardiovascular health. The addition of saturated fat to the diet reduces the levels of a substance called lipoprotein (a)—pronounced “lipoprotein little a” and abbreviated Lp(a)—that correlates strongly with risk for heart disease. Currently there are no medications to lower this substance and the only dietary means of lowering Lp(a) is eating saturated fat. Bet you didn’t hear that on the nightly news. Moreover, eating saturated (and other) fats also raises the level of HDL, the so-called good cholesterol. Lastly, research has shown that when women diet, those eating the greatest percentage of the total fat in their diets as saturated fat lose the most weight.
Editor's note: Those of you who have read the series on this site called Slaying the Low Carb Dragon know that the same is true for men. The Kitavans, whose saturated fat intake is 80% or more of the fat they consume, are free of obesity, heart disease, and other degenerative diseases that plague the West. By the way, the Kitavans eat a high carbohydrate diet (69% by calories), although the Eades in their various bestselling books preach a low carbohydrate lifestyle. It is worth noting that the Kitavans apparently don't need a 6 week cure for the middle aged middle.
2) Stronger bones
In middle age, as bone mass begins to decline, an important goal (particularly for women) is to build strong bones. You can’t turn on the television without being told you need calcium for your bones, but do you recall ever hearing that saturated fat is required for calcium to be effectively incorporated into bone?
According to one of the foremost research experts in dietary fats and human health, Mary Enig, Ph.D., there’s a case to be made for having as much as 50 percent of the fats in your diet as saturated fats for this reason. That’s a far cry from the 7 to 10 percent suggested by mainstream institutions.
If her reasoning is sound—and we believe it is— is it any wonder that the vast majority of women told to avoid saturated fat and to selectively use vegetable oils instead would begin to lose bone mass, develop osteoporosis, and get put on expensive prescription medications plus calcium to try to recover the loss in middle age?
Editor's note: Mary Enig is a sharp lady but you can go well beyond the 50% level when it comes to saturated fats and enjoy extremely good health.
3) Improved liver health
Adding saturated fat to the diet has been shown in medical research to encourage the liver cells to dump their fat content. Clearing fat from the liver is the critical first step to calling a halt to middle-body fat storage. Additionally, saturated fat has been shown to protect the liver from the toxic insults of alcohol and medications, including acetaminophen and other drugs commonly used for pain and arthritis, such as nonsteroidal anti-inflammatory drugs or NSAIDs, and even to reverse the damage once it has occurred. Since the liver is the lynchpin of a healthy metabolism, anything that is good for the liver is good for getting rid of fat in the middle. Polyunsaturated vegetable fats do not offer this protection.
Editor's note: That is an understatement regarding polyunsaturated fats. See Chris Masterjohn's Special Report on why PUFA's may be dangerous for your health.
4) Healthy lungs
For proper function, the airspaces of the lungs have to be coated with a thin layer of what’s called lung surfactant. The fat content of lung surfactant is 100 percent saturated fatty acids. Replacement of these critical fats by other types of fat makes faulty surfactant and potentially causes breathing difficulties. Absence of the correct amount and composition of this material leads to collapse of the airspaces and respiratory distress. It’s what’s missing in the lungs of premature infants who develop the breathing disorder called infant respiratory distress syndrome. Some researchers feel that the wholesale substitution of partially hydrogenated (trans) fats for naturally saturated fats in commercially prepared foods may be playing a role in the rise of asthma among children. Fortunately, the heyday of trans fats is ending and their use is on the decline. Unfortunately, however, the unreasoning fear of saturated fat leads many people to replace trans fats with an overabundance of polyunsaturated vegetable oils, which may prove just as unhealthful.
5) Healthy brain
You will likely be astounded to learn that your brain is mainly made of fat and cholesterol. Though many people are now familiar with the importance of the highly unsaturated essential fatty acids found in cold-water fish (EPA and DHA) for normal brain and nerve function, the lion’s share of the fatty acids in the brain are actually saturated. A diet that skimps on healthy saturated fats robs your brain of the raw materials it needs to function optimally.
Editor's note: This is precisely what you don't want to happen in the midst of a crisis.
6) Proper nerve signaling
Certain saturated fats, particularly those found in butter, lard, coconut oil, and palm oil, function directly as signaling messengers that influence the metabolism, including such critical jobs as the appropriate release of insulin. And just any old fat won’t do. Without the correct signals to tell the organs and glands what to do, the job doesn’t get done or gets done improperly.
7) Strong immune system
Saturated fats found in butter and coconut oil (myristic acid and lauric acid) play key roles in immune health. Loss of sufficient saturated fatty acids in the white blood cells hampers their ability to recognize and destroy foreign invaders, such as viruses, bacteria, and fungi. Human breast milk is quite rich in myristic and lauric acid, which have potent germ-killing ability. But the importance of the fats lives on beyond infancy; we need dietary replenishment of them throughout adulthood, middle age, and into seniority to keep the immune system vigilant against the development of cancerous cells as well as infectious invaders."