High Glycemic Index and Inflammation

A recent study published in the American Journal of Clinical Nutrition (2010; 92(3): 634-43) further demonstrates the direct relationship between a high glycemic diet and inflammation. In a study involving 1490 postmenopausal women and 1245 men (baseline average age: 49 years) from a population-based cohort, women consuming a diet with the highest glycemic index (highest tertile) were found to have a 2.9-fold increased risk of inflammatory-disease related death, as compared to women in the lowest tertile of GI diet (multivariate HR=2.89). Increased intakes of foods high in refined sugars or starches and decreasing intake of vegetables other than potatoes as well as cereals and breads was also independently associated with a greater risk. The authors conclude, “These data provide new epidemiologic evidence of a potentially important link between GI and inflammatory disease mortality among older women.”

Artificial Sweeteners=Real Trouble

Most of my patients know that I’m not a fan of artificial sweeteners, but people often have      a hard time cutting them out of their diet. Hopefully this evidence (excerpted from   mercola.com) will be enough of a motivator!

Why Artificial Sweeteners Can be Detrimental to Your Waistline

The belief that eating artificially sweetened foods and drinking artificially sweetened beverages will help you to lose weight is a carefully orchestrated deception. So if you are still opting for sugar-free choices for this reason, you are being sorely misled.

For years now studies have shown that consuming artificial sweeteners breaks the connection between a sweet sensation and a high-calorie food, thereby changing your body’s ability to regulate intake naturally.

In one study by psychologists at Purdue University’s Ingestive Behavior Research Center, rats that ate yogurt sweetened with an artificial sweetener consumed more calories (and didn’t make up for it by cutting back later), gained more weight, and put on more body fat than rats that ate yogurt sweetened with sugar.

Other studies, too, have shown that eating artificial sweeteners might hinder your body’s ability to estimate calorie intake, thus boosting your inclination to overindulge. Your body and your brain simply do not have the same biological response to artificial sweeteners that they do to regular sugar, and this can pose some serious problems.

Your Brain Can Tell the Difference

You may have convinced yourself that your favorite artificial sweetener tastes the same as sugar, but rest assured your brain is not being fooled.

In one brain-scan study by neuroscientist Paul Smeets, volunteers were given two version of a beverage, one sweetened with sugar, the other with a blend of artificial sweeteners. The brain scans showed that the artificially sweetened beverage failed to activate an area of the brain called the caudate nucleus, which is an area associated with rewards.

A separate study by psychiatrist Guido Frank at the University of Colorado in Denver also looked into your brain’s response to sugar versus artificial sweeteners. Women given a taste of the two said they could not consciously determine a difference. However, a functional magnetic resonance imaging (fMRI) of their brain responses showed differences indeed.

As in the previously mentioned study, the sugar activated the reward areas of your brain more strongly than the artificial sweetener, suggesting that the latter may not make you feel satisfied the way sugar would.

This is not an endorsement to indulge in sugar; rather it’s a major clue that your body is not being fooled by artificial sweeteners.

High Fructose Corn Syrup Tries To Hide Behind Name Change

In an attempt to try and fool the public, the Corn Refiner’s Association has applied with the FDA to change the name of high fructose corn syrup to “corn sugar”. This would imply that high fructose corn syrup is a “natural” product, when in reality it is a highly synthetic product. The move may have partly been prompted by a recent Princeton University study demonstrating that rats who consumed high fructose corn syrup “gained significantly more weight than those with access to table sugar, even when their overall caloric intake was the same.”
For more information, visit the following website:

http://www.takepart.com/news/2010/09/14/high-fructose-corn-syrup-up-for-a-new-name?fb_js_fbu=757915220

Cognitive Impairment and B Vitamins

Daily tablets of large doses of vitamins can halve the rate of brain shrinkage in elderly people with memory problems and may slow their progression toward dementia, data from a recent British trial showed.

Scientists from Oxford University said their two-year clinical trial was the largest to date into the effect of B vitamins on so-called “mild cognitive impairment” — a major risk factor for Alzheimer’s disease and other forms of dementia.

Experts commenting on the findings said they were important and called for larger, longer full-scale clinical trials to see if the safety and effectiveness of B vitamins in the prevention of neurodegenerative conditions could be confirmed.

“This is a very dramatic and striking result. It’s much more than we could have predicted,” said David Smith of Oxford’s department of pharmacology, who co-led the trial.

“It is our hope that this simple and safe treatment will delay development of Alzheimer’s in many people who suffer from mild memory problems.”

Mild cognitive impairment (MCI) affects around 16 percent of people aged over 70 worldwide and is characterized by slight problems with memory loss, language or other mental functions.

MCI does not usually interfere with daily life, but around 50 percent of people diagnosed with it go on to develop the far more severe Alzheimer’s disease within five years. Alzheimer’s is a mind-wasting disease for which there are few treatments and no cure, and which affects 26 million people around the world.

Smith and colleagues conducted a two-year trial with 168 volunteers with MCI who were given either a vitamin pill containing very high doses of folic acid, vitamin B6 and vitamin B12, or a placebo dummy pill.

These B vitamins are known to control levels of an amino acid called homocysteine in the blood, and high blood levels of homocysteine are linked to an increased risk of developing Alzheimer’s disease.

Brain scans were taken at the beginning and the end of the trial to monitor the rate of brain shrinkage, or atrophy.

The results, published in the Public Library of Science (PLoS) One journal, showed that on average the brains of those taking the vitamin treatment shrank at a rate of 0.76 percent a year, while those taking the dummy pill had an average brain shrinkage of 1.08 percent.

People who had the highest levels of homocysteine at the start of the trial benefited the most from the treatment, with their brains shrinking at half the rate of those on the placebo.

Although the trial was not designed to measure cognitive ability, the researchers found those people who had lowest rates of shrinkage had the highest scores in mental tests.

CT Physicians and Chronic Lyme Disease

According to a recent UConn survey, only about 2% of physicians in the state of Connecticut treat chronic Lyme disease, while barely 50% even believe that it exists! This is a travesty for patients who have suffered for months or years without the appropriate treatment, and is largely due to the stances taken by the American College of Rheumatology, Infectious Diseases Society of American, and other organizations that dissuade physicians from treating chronic Lyme. Fortunately, a group of physicians who are aware of chronic Lyme disease, and how to treat it effectively, have formed their own organization (ILADS).

If you have a history of Lyme disease, or believe you may be suffering from chronic Lyme, please contact ILADS (www.ilads.org) for a physician referral.
For a more in-depth article regarding this recent survey, please visit http://www.medpagetoday.com/InfectiousDisease/GeneralInfectiousDisease/22000

Blueberries and Insulin

A new study published in the Journal of Nutrition (August 19, 2010) showed that subjects who consumed blueberries twice/day for 6 weeks had an improvement in insulin sensitivity. The participants were all obese and insulin-resistant, but not diabetic.

Blueberries have long been considered a “super-food” because of their high antioxidant and fiber content, and are often recommended for diabetic or insulin-resistant patients due to their negligible affect on blood sugar (as opposed to other fruits). However, the fact that they are now proven to actually reverse insulin-resistance makes it even more important for doctors to emphasize that all patients who are pre-diabetic and/or obese consume blueberries on a daily basis.

Green Tea and Metabolic Syndrome

Because metabolic syndrome is something I tend to see on a weekly basis, it’s always good to see new information on what can help to control and reverse this condition. The latest research points out the benefits of green tea in treating metabolic syndrome. It’s also well known that green tea contains weight-loss promoting properties, among many other beneficial compounds. 

Here is a summary of the research findings:

Reference: “Green tea minimally affects biomarkers of inflammation in obese subjects with metabolic syndrome,” Basu A, Lyons TJ, et al, Nutrition, 2010 Jun 1; [Epub ahead of print]. (Address: Nutritional Sciences, Oklahoma State University, Stillwater, Oklahoma, USA).
Summary: In a randomized, controlled study involving 35 obese subjects with metabolic syndrome, results indicate that green tea intake may exert cardioprotective benefits. The subjects were randomized to receive green tea (4 cups/d), green tea extract (2 capsules and 4 cups water/d), or no treatment (4 cups water/d) for 8 weeks. At intervention end, green tea (drink and capsule) intake was associated with significant reduction of plasma serum amyloid alpha, compared with control. Thus, the authors of this study conclude, “green tea significantly reduced plasma serum amyloid alpha, an independent cardiovascular disease risk factor, in obese subjects with metabolic syndrome.”

Weight Gain and Fatty Acids-Born Into Obesity?

For years, the naturopathic profession has emphasized the importance of balancing the ratio between omega 3 and omega 6 intake. The standard American diet is overloaded with omega 6 fatty acids, while being deficient in omega 3, which can lead to a chronic inflammatory state, increasing the risk of cancer and other serious diseases. Now, a new study in the Journal of Lipid Research has found that a high omega 6:omega 3 ratio may not only lead to insulin resistance in individuals, but may actually predispose their offspring to a life-long struggle with obesity.

In addition to high consumption of fast foods and refined carbohydrates, the high omega 6:omega 3 ratio in the American diet is largely due to the shift from grass-fed to grain-fed livestock. For meat eaters, this means seeking out sources of locally raised or grass-fed livestock, along with incorporating more wild game (bison, venison) into the diet. In general, a diet that is well-balanced with fruits, vegetables, fish, and healthy oils should insure a healthy balance of omega fats. Supplementation with fish oil and ground flax seeds is also recommended, to further bolster your omega 3 intake.

Dementia and Vitamin E

The July 2010 edition of Archives of Neurology contains a study that demonstrates an inverse relationship between vitamin E intake and dementia risk, including Alzheimer’s. Participants in the study were followed for roughly a decade, and those who had the highest dietary intake of Vitamin E were shown to have the lowest incidence of dementia. Overall, higher vitamin E intake was linked to a 25% reduction in dementia risk.

Food sources of vitamin E include wheat germ, spinach, broccoli, almonds, and hazelnuts. Although this study didn’t take vitamin E supplementation into consideration, you still may want to consider supplementing with 200 IU of natural, mixed-tocopherol on a daily basis for optimal health benefits.

Heart Disease and Anxiety

The July issue of the Archives of General Psychiatry contains a study that demonstrates a 74% increased risk for adverse cardiovascular events (stroke, heart attack, and sudden death) in patients with general anxiety disorder (GAD). While it’s often been speculated that many patients with coronary heart disease (CHD) are also anxious, this study is the first of it’s kind to prove that there is indeed a definitive link between anxiety and heart disease. 

This study is further proof that the mind-body connection cannot be ignored. If your stress level is consistently high, don’t wait until you begin to experience symptoms before taking the necessary steps to address your anxiety. Naturopathic medicine can offer a number of therapies, including botanical, nutritional, acupuncture, and biofeedback, to help you manage stress more effectively. The Heart Math Institute (www.heartmath.org) offers tips and products that help you “retrain” your stress response, making you less prone to the adverse effects of anxiety. MoodGym (http://moodgym.anu.edu.au/welcome) is another online resource that is recommended for this purpose. 

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