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Delayed reporting of concussions may lead to prolonged post-concussion symptoms

According to a study published in this month’s Journal of Athletic Training, athletes who wait to report a concussion may experience prolonged recovery times. Researchers determined that athletes who delay post-concussion treatment missed close to one more week of activity than those who received immediate treatment. Athletes who do not receive immediate treatment are at risk for further damage to the brain and will most likely take much longer to recover. Previous research has also supported...Read more

DHA helps improve kidney cancer therapy according to new study

According to a new study published in the journal Molecular Cancer Therapeutics, researchers demonstrate that docosahexaenoic acid (DHA) helps reduce renal cell carcinoma invasiveness, growth rate, and blood vessel growth when combined with the anti-cancer therapy regorafenib.  Regorafenib is one of a new generation of anti-cancer therapies that attack tyrosine kinases. Unfortunately, kidney cancers mutate to resist these therapies. However, DHA metabolites called...Read more

Study demonstrates nutritional supplements improve efficacy of antidepressants

According to an evidence review published earlier this week in the American Journal of Psychiatry, researchers confirmed that certain nutritional supplements can increase the efficacy of antidepressants for individuals with clinical depression. Researchers at Harvard and the University of Melbourne examined 40 clinical trials along with a systematic review of the evidence for nutrient supplements that are used as adjuncts to help with clinical depression. As a result, fish oil, SAMe,...Read more

New study finds vitamin D improves heart function

According to a new study published Monday in the Journal of the American College of Cardiology, researchers demonstrated that vitamin D improves heart function in patients with chronic heart failure. Heart failure affects more than 23 million people worldwide. This statistic emphasizes the significance of this new study because it presents the first evidence that vitamin D supplementation can improve heart function of people with heart failure. The findings could make a meaningful difference in...Read more

New study shows higher doses of omega 3 fatty acids, specifically EPA, are beneficial for depression

Depression is a major cause of disease burden worldwide, affecting approximately 350 million people. For quite some time now, fish oil supplementation has been a recommended adjunct for helping with major depressive disorder (MDD). According to a new meta-analysis published two weeks ago in Translational Psychiatry, researchers have further confirmed the link between intake of omega-3 fatty acids and the reduction in major depressive disorder. This meta-analysis consisted of 13...Read more

New study reveals individuals with metabolic syndrome may require more vitamin E

New research published just two days ago in the American Journal of Clinical Nutrition demonstrated that approximately one-third of Americans who have metabolic syndrome do not absorb dietary vitamin E as effectively as healthy individuals. Vitamin E is a potent antioxidant that is essential to overall health. It is estimated that 35% of Americans have metabolic syndrome, which is characterized by having at least three of the following traits: excess abdominal fat, elevated blood pressure, low...Read more

Chemical exposure may be linked to rising rates in diabetes and obesity

According to a statement issued three days ago by the Endocrine Society, their summary links endocrine-disrupting chemical exposure to two of our biggest public health risks, diabetes and obesity. This news builds upon the Endocrine Society’s 2009 report, which examined the scientific evidence on endocrine-disrupting chemicals (EDCs) and the health risks associated with them. Since 2009, additional research has demonstrated that exposure to EDCs is associated with an increased risk of diabetes...Read more

Low vitamin D associated with age-related cognitive decline and dementia

In a new study published earlier this month in JAMA Neurology, researchers demonstrated a significant association between vitamin D insufficiency and cognitive decline that is specifically seen in Alzheimer's disease and dementia. The results reinforce the importance of identifying vitamin D insufficiency among the elderly. Here, low vitamin D levels were associated with significantly faster rates of decline in memory and executive function performance. This study included approximately...Read more

Resveratrol helps to stabilize Alzheimer's disease biomarker

A new study published last week in the journal Neurology demonstrated that long-term, high-dose resveratrol stabilized amyloid-beta40 (Abeta40) in patients with mild to moderate Alzheimer's disease. This biomarker declines when the disease progresses. Even though this is a single, small study, it is the largest and longest nationwide human clinical trial of high-dose resveratrol to date. The clinical trial was a randomized, phase II, placebo-controlled, double blind study in patients with mild...Read more

New study finds high prevalence of pre-diabetes and diabetes in the U.S.

According to a new study published in JAMA just three days ago, the increasing prevalence of diabetes may be leveling off. That being said, in 2011 through 2012, the estimated prevalence of diabetes among U.S. adults was 14% and the prevalence of pre-diabetes was 38%, which means about half of the U.S. adult population has either diabetes or pre-diabetes. Diabetes is a major cause of illness and death and is still a significant problem in the U.S. The healthcare costs associated with diabetes...Read more

Vitamin D and its role in macular degeneration

Vitamin D has been extensively researched for its benefits in bone health, cancer, inflammation, and the immune system. A new study published in JAMA Ophthalmology last week found that vitamin D may be a critical player in eye health in the prevention of age-related macular degeneration, specifically among women who are genetically susceptible. This may have to do with its role in inflammation, which is believed to be involved in the development of macular degeneration. Macular...Read more

Are you allergic to the fruits and vegetables you eat? You may actually be reacting to the antibiotic residues in the food.

A recent article published in Annals of Allergy, Asthma and Immunology discusses a case of a 10 year-old girl who had an anaphylactic reaction after eating blueberry pie. She had a history of asthma and seasonal allergies, and known allergies to penicillin and cow's milk, but she was not aware of being allergic to any of the ingredients in the pie. After much testing, it was discovered that the reaction was caused by streptomycin-contaminated blueberry. Streptomycin is a well-known antibiotic,...Read more

Green tea polyphenols protect spinal cord neurons against oxidative stress

Green tea polyphenols are a potential new aid for the recovery and regeneration of neurons after spinal cord injury. Several factors contribute to pathological changes secondary to spinal cord injury, with oxidative stress having a very important role. The formation of reaction oxygen species is the basic response to disease and trauma that contributes significantly to the injury. As a result, oxidative stress and inflammation cause the death of neurons and are the main processes leading to...Read more

Can probiotics help prevent obesity?

In a recent study, researchers at Vanderbilt tested a bacteria that can produce a “therapeutic compound” in the gut. The results showed that it stopped weight gain, insulin resistance and other health complications.  Past research has demonstrated that gut bacteria plays a role in the development of obesity, diabetes, and cardiovascular disease.  According to Sean Davis, PhD, assistant professor of pharmacology at Vanderbilt, “The types of bacteria you have in your gut influence your...Read more

Is niacin safe?

There has been some recent negative news about niacin based on the HPS2-THRIVE study, and now we see it again, this time in the New England Journal of Medicine.  Let’s take a closer look at all of this.  First, in the recent HPS2-THRIVE study, which examined an investigational drug from Merck, the researchers state that niacin does not provide any benefits. The drug they looked at is a combination of extended-release niacin and laropiprant, a drug which partially blocks the flushing...Read more

Examining immune-related disorders and microbial balance

It has become increasingly clear that many diseases are triggered or influenced by changes in bacterial populations in the gut. The general view up until now has been that bacteria stimulate the immune system, which leads to inflammation or autoimmune diseases. In a recent study published in Immunity, researchers have painted a more complex picture. The immune system of the gastrointestinal tract not only prevents the invasion of pathogens, but it is more actively involved in the balance...Read more

The human gut has only a limited ability to convert folic acid to 5-MTHF.

There has been a lot of press on the link between MTHFR (methylenetetrahydrofolate reductase) gene mutations and chronic disease. This has resulted in a great deal of concern with the particular form of folate that doctors are giving to their patients. As Director of Clinical and Product Support here at Designs for Health, I personally speak to approximately five doctors a day about this very topic. According to a recent study in the American Journal of Clinical Nutrition, the human gut appears...Read more

New study demonstrates how gut bacteria causes obesity

Posted on Thu, Jun 09, 2016 @ 02:22 PM

microbiome.jpgAccording to a new study published in Nature, a research team from Yale has identified the mechanism in which gut dysbiosis leads to obesity. Scientists have already understood that the gut microbiome is associated with metabolic markers and type II diabetes. However, while we may know that obesity is linked to changes in the gut bacteria, the associated mechanism has been unclear.

Previous research had shown that the short chain fatty acid, acetate, stimulates the secretion of insulin in mice. In this new study, when researchers compared acetate to other SCFAs, they discovered higher acetate levels in those that consumed a high fat diet. They also saw that acetate stimulated insulin secretion by beta cells in the pancreas, but this mechanism was not clear.

The researchers then observed that when acetate was then injected directly into the brain, it caused an increased release of insulin stimulating the parasympathetic nervous system. As a result, the increased acetate stimulated the beta cells of the pancreas to secrete more insulin in response to glucose. This also stimulated the secretion of gastrin and ghrelin, causing an increase in food intake.

To establish a causal relationship between the gut microbiota and increased insulin, the research team transferred fecal matter from one group of mice to another. As a result, they observed similar changes in the gut microbiota with acetate levels and insulin.

In summary, this research demonstrates an association of alterations in the gut microbiota as a result of dietary changes leading to an increased acetate production. Furthermore, the increased acetate leads to increased food intake causing metabolic syndrome, insulin resistance, and obesity.

The research team suggests this mechanism may have played a role in evolution by stimulating animals to fatten up in times of food scarcity.

I attended a probiotic workshop at Yale last March and one of the presentations was given by Max Nueuwdrop, MD, PHD, an internist and endocrinologist from Amsterdam who went into detail on the microbiota and metabolism. He showed how butyrate, a SCFA, improved insulin resistance and brown fat activation. In general, low short chain fatty acids (SCFAs) are associated with low diversity and abundance of the commensal bacteria. We typically want to see high levels of butyrate and not acetate. When patients introduce probotics and increase their dietary fiber intake by consuming fruits and vegetables, the beneficial bacteria, butyrate, and SCFAs increase.

Probiotics help encourage microbial diversity, especially if the probiotic supplement is of mixed species. In ecological terms, it is more stable to have diverse populations in any ecosystem. The same is true for the gastrointestinal microbiome.

This also brings up the importance of stool testing in patients with metabolic syndrome and diabetes, looking at fasting glucose, insulin, A1c, and lipid profiles. 

Other research has indicated that obesity has a microbial component that alters the caloric extraction from ingested food. For example, if more Bacteroidetes are present, the individual tends to be leaner. High ratios of Firmicutes to Bacteroidetes have been known to increase the caloric extraction from food, and these individuals tend to be more obese. This also ties together the importance of dietary fiber and weight loss.

By Michael Jurgelewicz, DC, DACBN, DCBCN

 

Related DFH Products- Probiotic Supreme DF™PaleoFiber™ Powder

 

For Related Resource Information, please watch our webinar:Designs For Health and Diagnostic Solutions Laboratory Present Advances in  Testing of the GI Microbiota

For Related Resource Information, please listen to our Nutrient Roundtables: Gastrointestinal Support, with Michael Jurgelewicz, DC, Arland Hill DC, Camille  Gallinger CN, Rebecca Murray APRN.

Insulin Resistance with Dr. Michael Jurgelewicz, Dr. Sarah Lobisco, Camille  Gallinger, CN, Cristiana Paul, MS

 

Source: Rachel J. Perry, Liang Peng, Natasha A. Barry, Gary W. Cline, Dongyan Zhang, Rebecca L. Cardone, Kitt Falk Petersen, Richard G. Kibbey, Andrew L. Goodman, Gerald I. Shulman. Acetate mediates a microbiome–brain–β-cell axis to promote metabolic syndrome. Nature, 2016; 534 (7606): 213 DOI: 10.1038/nature18309

 

 

Tags: Probiotics, obesity, microbiome

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