Paleolithic Diet Is Best Bet for Diabetes and Other Diseases
by Loren Cordain, Ph.D.
A newly published study in Cardiovascular Diabetology compared the effects of a Paleolithic diet to the current guidelines for a diabetes diet, and looked at cardiovascular risk factors for type 2 diabetes patients. The participating three women and ten men, who had type 2 diabetes that was not treated with insulin, were instructed to follow each diet for three-months.
The Paleolithic diet used was lower in cereals and dairy products, and higher in fruits, vegetables, meat and eggs. It was also higher in unsaturated fatty acids, dietary cholesterol and several vitamins. It was lower in total energy, energy density, carbohydrate, dietary glycemic load (GL) and glycemic index (GI), saturated fatty acids and calcium. News and Upcoming Events
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Paleolithic diet compared to current diabetes diet
The study concluded that a Paleolithic diet improved glycemic control and several cardiovascular risk factors as compared to a diabetes diet. The Paleolithic diet produced lower A1c, triglycerides, and diastolic blood pressure.
An A1c test (also known as glycated hemoglobin or HbA1c) gives you a picture of your average blood glucose control for the past 2 to 3 months.
Triglycerides are a type of fat found in your blood. Excess triglycerides in plasma are linked to coronary artery disease in some people. Elevated triglycerides may be a result of untreated diabetes mellitus or another disease.
Diastolic blood pressure measures the pressure in your blood vessels between heartbeats when your heart is resting, and it’s the bottom number in a blood pressure reading. Below 60 is considered low, and higher than 90 is considered high.
The Paleolithic diet also produced lower weight, body mass index (BMI), waist circumference and higher high-density lipoprotein (HDL) cholesterol.
“Good” HDL cholesterol seems to scour the walls of blood vessels, and clean out excess cholesterol.
The authors of this study also compared the effects of a Paleolithic diet to those of several other diets:
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Paleolithic diet compared to Mediterranean-like diet
This 12-week randomized controlled study involved 29 men with ischemic heart disease and impaired glucose tolerance or type 2 diabetes. The study concluded that a Paleolithic diet improved glucose tolerance independent of weight-loss when compared to a Mediterranean-like diet1.
Impaired glucose tolerance is considered to be a pre-diabetic state of dysglycemia that is associated with insulin resistance, and increased risk of cardiovascular pathology.
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Paleolithic diet studies with overweight individuals
In a non-controlled study with nine overweight people who were otherwise healthy, intervention food was supplied and weight was kept steady. Researchers concluded that a Paleolithic diet consumed for just ten days improved diastolic blood pressure, glucose tolerance, insulin sensitivity and lipid profiles2.
Insulin sensitivity is one measure of the risk for heart disease. In general, the more sensitive one is, the lower the risk for heart problems.
Lipid profiles include tests that are often ordered together to determine the risk of coronary heart disease. These tests that have been shown to be good indicators of the risk for heart attack or stroke caused by blockage of blood vessels or hardening of the arteries, also known as atherosclerois. Lipid profiles typically include total cholesterol, high density lipoprotein cholesterol (HDL-C) — “good” cholesterol, low density lipoprotein cholesterol (LDL-C) — “bad” cholesterol, and triglycerides.
A second non-controlled study of 14 healthy people found that three weeks on a Paleolithic diet significantly reduced weight, BMI, waist circumference, systolic blood pressure, and the plasminogen activator inhibitor-1 (PAI-1)3.
Systolic blood pressure is the top number in a blood pressure reading, and it represents the maximum pressure exerted when the heart contracts.
PAI-1 is mainly produced by the cells lining the blood vessels, but is also secreted by other tissue types. PAI-1 is an inhibitor of the physiological process that degrades blood clots. Elevated PAI-1 concentrations are associated with cardiovascular disease.
Hunter-gatherer diet studies with Australian Aborigines
One non-controlled study involved ten Australian Aborigines with diabetes, and a mean BMI of 27 kg/m2. Researchers concluded that reverting to a hunter–gatherer lifestyle for just seven weeks led to a 10% weight loss, and reductions in fasting and 2-hour glucose and fasting insulin levels4.
The same authors also conducted a second study with healthy Australian Aborigines. In this latter study, they found the insulin response to 70 g of starch from white bread was reduced, while the glucose response was not, following a reversion to a traditional lifestyle for 10- to 12-weeks5.
Epidemiological study with Pacific Islanders
This study looked at traditional Pacific Island inhabitants of Kitava, Papua New Guinea. These people, who practiced a hunter-gatherer lifestyle, had no signs of ischemic heart disease, stroke or markers of metabolic syndrome, which may result from their traditional lifestyle6-8.
Metabolic syndrome refers to a group of symptoms that occur together, and promote the development of coronary artery disease, stroke, and type 2 diabetes.
The researchers concluded that all the improvements in markers of the metabolic syndrome on a Paleolithic diet are in line with findings from epidemiological studies in non-Western populations6-8.
Improvements in A1c1, weight1, 4, 9, BMI9, waist circumference1, 9, diastolic blood pressure2, and triglycerides2 on a Paleolithic diet have been observed in intervention studies.
A lower reported energy intake and energy density of food, despite food intake ad libitum, also agrees with earlier findings that a Paleolithic diet facilitates reduced caloric intake1, 10, 11.
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Next time, we’ll take a look at theories regarding what our Paleolithic ancestors really ate, and weigh that against existing evidence. We’ll also show you how to make Mexican dining “Paleo”.
Kid-Friendly Paleo Lunches
Have you and your family been enjoying all the virtues of Paleo eating at home, but felt particularly challenged as to how your kids can keep up their great nutrition at school?
Not only are many school lunches unhealthy (and not Paleo), but oftentimes the time allocated to lunch for children is not sufficient to eat, chew and digest properly. As a result, some kids may end up eating too much too quickly, or possibly just skipping it all together!
Just as we adults need to prepare and pack lunches, snacks and meals in advance, so, too, do we need to do this for our kids.
Following these guidelines will help to ensure your little ones are adequately nourished even when out of your loving and watchful sight!
Make sure they have suitable lunchboxes. These should be insulated in order to keep items properly chilled with the help of a re-freezable ice pack or two.
If time is an issue in your child’s schedule, opt for softer foods that literally don’t take as much time to chew! This could be steamed veggies drizzled with olive oil, and soft, sliced fruit, such as peaches, pears, nectarines, oranges, grapes and so on. Diced turkey breast mixed with mashed avocado or hard-boiled eggs (if you’re kids are not following an autoimmune plan) chopped up with flax oil and a handful of raw walnuts are another suggestion.
Just as when you’re planning your own meals, keep in mind the balance of macronutrient ratio. Each meal should have some protein, some fat and some unprocessed carbohydrate, as well as the balance of timing of meals if possible.
Try to send evenly portioned containers of food in your kids’ lunches to eat every few hours, schedule permitting, rather than one giant container of food. This makes it easier for kids to simply open one little container of food, eat its contents, and be done with it!
Finally, it never hurts to get active in the school system. Call the administrators and ask to arrange a meeting if there are any issues with kids not having enough time to properly eat their lunch, or if the meals offered are sub-par.
Bring a list of all the wonderful foods you eat at home to share with the attendees at the meeting, so they can learn for themselves. At the very least, it will bring attention to the fact that change is in order!
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Another reason to avoid high fructose corn syrup:The Journal of Agricultural and Food Chemistry published a study of the “Formation of Hydroxymethylfurfural in Domestic High-Fructose Corn Syrup (HFCS) and Its Toxicity to the Honey Bee”.
When exposed to warm temperatures, HFCS can form hydroxymethylfurfural (HMF), mainly from heating fructose. HMF can kill honeybees, and may contribute to colony collapse disorder that has killed honeybees in the United States and around the world threatening human food production.
HFCS is also used as a sweetener in many of our processed foods, and studies have linked HMF to DNA damage in humans. In addition, HMF breaks down in the body to other substances potentially even more harmful than HMF.
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Our Recommendations
Wondering how much protein you need for optimum health? That research, and much more, is available in The Paleo Diet Update archive (valued at over $300). The Paleo Diet Update v.4, #5 – Consensus on Protein and Health reported the findings of the Protein Summit 2007: Exploring the Impact of High-Quality Protein on Optimal Health:
“Although an emerging body of evidence continues to indicate that high protein diets have numerous health benefits2-4, the recommended dietary allowance (RDA) for protein is just 0.8 grams/kilogram/day. This is actually below 10% of total caloric intake, which is the low end of the range of the Acceptable Macronutrient Distribution Range for protein fixed by the Institute of Medicine of the National Academy of Sciences5. Furthermore, the food patterns established by the Dietary Guidelines for Americans have been estimated to provide a protein intake ranging only from 17% to 21% of calories6.
To settle this issue and to discuss the collective body of scientific evidence for the role of dietary protein in optimizing health for the adult populations, 52 internationally recognized experts in protein research gathered in Charleston, SC, on May 24, 2007, in a conference called ‘Protein Summit 2007: Exploring the Impact of High-Quality Protein on Optimal Health’7.”
All the research from the five years The Paleo Diet Update has been investigating ways to protect your health is available for just $99.95.
Want personal access to our team of experts for Q&A coaching on how to improve your life with optimum nutrition? For six consecutive weeks, we will conduct a live teleconference to help you put your new eating habits into practice. These calls will be led by Wiley Long (M.S., Nutrition) and Nell Stephenson (BS EXSC, USC ACSM H/FI, Ironman Triathlete, and Paleo Diet Eating Coach!), and include a couple of appearances from Professor Loren Cordain. You will also receive a recorded copy of all calls.
If you want to lose weight, get rid of your acne, slow the progression of an autoimmune disease, and feel and perform better, the key is to eat for optimum health. We offer a special version directed specifically to helping autoimmune diseases.
In The Paleo Diet Implementation Program, you’ll have a detailed plan on what to eat; and how to shop and prep food in ways that are fast and easy. You’ll have a step-by-step program that will make the process easy and guarantee results.
Here’s just a sample of how people are changing their
lives with the Paleo Diet:
“I have a strong family history on both sides of type II diabetes so I have been very vigilant about diet and exercise. I was bewildered because the more I followed the whole grain, low fat diet, the fatter and fatter I got. I was diagnosed with hypothyroidism, but treatment didn’t generate weight loss.
As a 50 year old female at 5’5, this is not so attractive…was lethargic, depressed, puffy, and irritable. Anti-depressants came next and left me feeling groggy and drugged. And the headaches just got worse. I was in a downward spiral mentally and physically. I had tried a litany of vitamins and supplements and never felt measurably different no matter how many I took.
I came across the Paleo Diet when I was researching ways to deal with side effects of anti-depressants…I bought and read The Paleo Diet for Athletes and the guidance in there…helped me significantly during endurance activities.
It’s been just 3 months eating the Paleo way. I am losing, on average, a pound a week and the weight loss pace is now picking up. I used to have to preload with Ibuprofen before big events to stave off soreness. I am now using no NSAIDS and experience little or no lasting soreness. Ski season just kicked off and I am skiing without stiffness or aches. I look and feel 10 years younger. I can breathe freely as my nasal allergies have magically disappeared.”
Christi
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Follow Up and Feedback
In this section, we’ll share readers’ concerns and questions about nutrition and the Paleo Diet to help you better understand how to use the diet to optimize your health and fitness.
We just received this reader’s question: “Can you tell me if corn on the cob is o.k. to eat on the Paleo Diet?”
No, corn is not part of the Paleo Diet because corn was domesticated only 7,000 years ago in South America. This is approximately only 0.4% of human evolution.
Several reasons make corn a problematic nutrient for humans:
Where corn was a staple food, populations suffered from pellagra. This is a disease caused by a deficiency of niacin (vitamin B3) and the amino acid tryptophan. Some anti-nutrients in corn block the absorption of several micronutrients.
Like cereals in general, corn is a rich source of anti-nutrients, such as lectins and alkylresorcinols that have adverse health effects. Lectins increase intestinal permeability, thereby increasing the risk of suffering certain autoimmune diseases.
Although we can’t answer every question personally due to the number of letters received, we are very interested in hearing your thoughts, learning about your experiences, and understanding your questions. Many of the questions that we receive will be answered in future newsletters.
Talk to you next week!
To your optimum health,
Wiley Long, M.S., Nutrition and Exercise Science
Editor