Entries by Dr. John (516)

Sunday
Sep152013

Good News on Global Surface Temperatures

"While the climate models are accurate at least back to 1880, we are currently experiencing global surface temperatures less than predicted. Whether this is due to “a combination of more heat going into the deep oceans and downturns in multi-decadal cycles in global temperature” is unknown. Nevertheless, it is good news."

Source: Examining the Recent Slow-Down in Global Warming

Sunday
Sep152013

Quote: Beware of Soy

This claim that soy foods prevent heart disease is based on the fact that soy foods lower cholesterol. Soy foods can lower cholesterol, however this is not necessarily a good thing. Lowering cholesterol does not prevent heart disease like we used to think, and can, in fact cause an increase in other disorders including cancer, autoimmune disorders, intestinal diseases, stroke, accidents, violent behavior, depression and suicide.

Source: No Joy in Soy

Friday
Sep132013

Quote: Immigration from Pacific Island nations

There's an exodus underway from Pacific Island nations to America, one driven by multiple factors, according to island leaders and migrants. People relocating to Hawaii and other states say they've come for better jobs and health care. But there's also a less recognized but unmistakable contributor, Deeley explained: climate change.

"We can no longer find enough fish to feed our families. We're no longer able to secure enough fresh water like we were before."

As Pacific Islands Flood, A Climate-Driven Exodus Grows 

Related Post

Thursday
Sep122013

Reducing the risk of endometrial cancer

A recent report by the World Cancer Research Fund titled FOOD, NUTRITION, PHYSICAL ACTIVITY AND ENDOMETRIAL CANCER 2013 provides additional support for a Paleo approach to nutrition and fitness:

The evidence that greater body fatness (reflected by BMI, measures of abdominal girth and adult weight gain) is a cause of endometrial cancer is convincing. Glycaemic load is probably a cause of endometrial cancer, and physical activity and coffee both probably protect against this cancer.

Evidence for non-starchy vegetables and red meat was no longer suggestive of an association and was too limited to draw a conclusion.

Monday
Sep092013

Oceana: Save The Oceans

“Oceana, the only international organization dedicated solely to ocean conservation, is campaigning to save the planet's remaining stocks of wild seafood.”

The Perfect Protein

Sunday
Sep082013

Healing Patagonia: “Nobody wants to ruin their own land.”

Google Maps image of the easter half of the Straight of Magellan. Estancia Monte Dinero (A) is in Chile, just south of the border with Argentina.

The challenge for Patagonia is stark. Although much remains unspoiled, according to Julian Smith's article in Nature Conservancy Magazine:

Some 20 million acres of Patagonia’s grassland are now little more than blowing sand, causing the abandonment of hundreds of ranches in Argentina alone. One-third of Patagonia suffers severe desertification, and soils in 90 percent of the region are degraded to some extent.

Patagonian ranchers, in collaboration with The Nature Conservancy and Patagonia Incorporated are working to heal the wounds of hundreds of years of sheep herding. One such location is Estancia Monte Dinero, a sheep herding ranch which lies near the eastern of entrance the Straight of the Magellan.

Founded as part of the estancia system imported from Europe at the end of the 19th century, Monte Dinero is home to 20,000 sheep, raised for wool and meat. But here and in much of the rugged southern tail of South America, ranching has taken a toll on the vast but fragile grasslands that first drew European settlers. Constantly grazing sheep have nibbled and tramped the fields down to bone-dry soil, which is lifted by the unceasing winds and carried out to sea in immense dust plumes visible from space.

Recently the Estancia Monte Dinero has become “a test bed for a new program aimed at stopping and eventually reversing the demise of these grasslands.” Although met with some resistance, so far “more than 30 ranches in Argentina and Chile are now trying holistic management in some form.” The Conservancy’s goal is ambitious: “to preserve a 10th of the region—15 million acres.” As Ricardo Fenton, manager of Monte Dinero, observes: “Nobody wants to ruin their own land.”

Reference
Shear Salvation, Nature Conservancy Magazine

Related Posts 

Friday
Sep062013

MDA Success Story: John Mack

"I had always thought about losing weight but never gave it a fair try. I thought about it everyday. The hardest part for me was trying to find clothes. I would have to order them online or go to big and tall stores."

Read more: http://www.marksdailyapple.com/down-100-pounds-in-9-months/#ixzz2eAm5p9US

Thursday
Sep052013

Diabetes in China a "catastrophe"

The most comprehensive nationwide survey for diabetes ever conducted in China shows 11.6 percent of adults, or 114 million, has the disease. The finding, published yesterday in the Journal of the American Medical Association, adds 22 million diabetics, or the population of Australia, to a 2007 estimate and means almost one in three diabetes sufferers globally is in China.

Is it the China Diet?

China ‘Catastrophe’ Hits 114 Million as Diabetes Spreads
Bloomberg

Wednesday
Sep042013

Paleolithic People: The Pericú

This public domain image is thought to represent two Pericú women. The Pericú, now extinct, were among the first inhabitants of the southernmost portion Baja California known as the Cape Region. Evidence of Pericú occupation dates back to 9000 B.P. The two figures in this image appear fit and the bow & arrow indicates involvement in hunting. Their diet included marine mammals, shellfish (evidenced by “enormous shell mounds”) and “terrestrial resources.” Possibly, the Pericú were descendants of the Paleolithic people living on the Channel Islands of southern California.

Related Entries 

Tuesday
Sep032013

Quote: Obesity, Soft Drinks & Cognitive Decline

Although obesity may not be enough to warrant concern among parents, the lower academic potential of obese adolescents strongly argues for early treatment of childhood obesity and comprehensive intervention, including a limitation of sweetened soft drinks, especially those containing HFCS. Equally important is exploring the role of dietary omega-3 FAs, which appear to have beneficial effects on cognitive function and attenuate high-fructose associated cognitive decline.

The emerging role of dietary fructose in obesity and cognitive decline Nutr J. 2013; 12: 114.

 

HFCS: high fructose corn syrup
FA: fatty acids

Monday
Sep022013

High carbohydrate intake and cognitive impairment in the elderly

An issue of Neurosciences Update published in 2012 by the Mayo Clinic  contains a Research Highlight on the Association Between Macronutrient Intake and Risk of Dementia. The authors studied the 128-item food-frequency questionnaires of 937 cognitively normal elderly, 2oo of which later developed mild cognitive impairment (MCI) or dementia.

Findings showed that among the 937 participants who were cognitively normal at baseline, MCI or dementia developed in 200 and that the risk of either condition was increased in participants with dietary patterns showing a high percentage of carbohydrate intake and reduced in those with a high percentage of fat and protein intake. The authors concluded that a diet high in carbohydrates and low in fats and proteins may increase the risk of MCI or dementia in elderly persons (Roberts et al. J Alzheimer’s Dis. 2012;32[2]:329-39).

The research study, freely available online, does not lists the type of carbohydrates consumed by the participants.  From the food-frequency questionnaires, the authors

… computed the proportion of total daily energy derived from total carbohydrates (% carbohydrate), fat (% fat), and protein (% protein); from carbohydrate components (sugar, non-sugar carbohydrate, fiber); and fat components (polyunsaturated fatty acids [PUFA], monounsaturated fatty acids [MUFA], saturated fats [saturated fats], and trans-fatty acids), and ranked participants by quartiles of intake.

The researchers suggest several mechanisms for the impact of high carbohydrate intake on cognitive function in the elderly, among them:

High carbohydrate and sugar intake may adversely affect cognition through several mechanisms. Hyperglycemia and diabetes may contribute to increased formation of advanced glycation endproducts (AGE), upregulation of the soluble receptors for AGEs, and may generate oxidative stress which in turn, enhances AGE formation. AGEs and oxidative stress have also been associated with greater cognitive decline and with AD through effects on amyloid and tau metabolism.

The increased risk of MCI with lower intake of fats and proteins may involve non-energy related pathways. Fat and protein intake may be required for the integrity of neuronal membranes and fats for the integrity of the myelin sheaths in the brain.

Bottom Line: Don’t let your grandparents skip out on high quality sources of fat and protein.

Sunday
Sep012013

Terra: A view of Land’s End 

The Pericú, the first Paleolithic inhabitants of southernmost Baja California, may have visited this marvelous landscape today known as Land’s End. This wall of rock, as seen from Lover’s Beach, is the last major barrier before the confluence of the Sea or Cortez on the left and the Pacific Ocean further to the right.

A larger image can be found here: 500px.com/photo/43450176

(It’s good to be updating PaleoTerran again.)

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