Walk Faster to Prevent Type 2 Diabetes?

You probably want to shoot for a speed of 3 miles per hour or higher. (I’ll convert to kilometers per hour below.)

About one in 500 dogs will acquire diabetes. Some breeds are more prone than others.

The British Journal of Sports Medicine published an article by researchers based in Iran. They analyzed 10 cohort studies that looked at average habitual walking speed and the incidence of type 2 diabetes. Study subjects were not in Iran, but in the U.S., U.K., and Japan.

An easy, casual walking speed is 2 miles per hour (mph) or less. Brisk walking speed is 3-4 mph. I tried walking my dog today at 4 mph and couldn’t keep it up for long. Dog was fine with it.

The researchers found that a habitual walking speed of even 2.5 mph was linked to a slightly lower risk of type 2 diabetes compared to the casual walkers. A more definitive reduction of diabetes incidence (25%) was seen in those who walk at 3 to 4 mph.

For those of you who think in terms of km/hr: An easy, casual walking speed is 3.2 km/hr or less. Brisk walking speed is 4.8-6.4 km/hr. The researchers found that a habitual walking speed of even 4 km/hr was linked to a slightly lower risk of type 2 diabetes compared to the casual walkers. A more definitive reduction of diabetes incidence (25%) was seen in those who walk at 4.8-6.4 km/hr.

This doesn’t necessarily mean that you’ll cut your risk of developing type 2 diabetes if you increase your habitual walking speed from an easy stroll to 3 mph or higher. But it is suggestive and there is physiological science to support that suggestion. The problem is that this study was observational. Which means it’s possible that faster walkers are simply overall healthier than slower ones. They walk faster because they’re healthier and are just constitutionally (genetically?) less prone to illness. To prove that faster walking speeds prevent some cases of type 2 diabetes, you’d have to take 2,000 slow walkers and somehow motivate 1,000 of them to walk faster habitually, while making sure the slow-pokes stay slow for 5-10 years. Keep everything else the same for all 2,000. After 5-10 years, you compare the incidence of diabetes. That study will not, probably cannot, be done.

  Steve Parker, M.D.

h/t to Diabetes Daily for a well-written article on this.

Eaton and Konner Update Their View of the Paleo Diet

Melvin Konner and S. Boyd Eaton are highly respected pioneers in the paleo diet movement. Their new article in Evolutionary Anthropology is titled “Hunter-gatherer diets and activity as a model for health promotion: Challenges, responses, and confirmations.” For the low, low price of $15 USD you can read it here.

Abstract

Beginning in 1985, we and others presented estimates of hunter-gatherer (and ultimately ancestral) diet and physical activity, hoping to provide a model for health promotion. The Hunter-Gatherer Model was designed to offset the apparent mismatch between our genes and the current Western-type lifestyle, a mismatch that arguably affects prevalence of many chronic degenerative diseases. The effort has always been controversial and subject to both scientific and popular critiques. The present article (1) addresses eight such challenges, presenting for each how the model has been modified in response, or how the criticism can be rebutted; (2) reviews new epidemiological and experimental evidence (including especially randomized controlled clinical trials); and (3) shows how official recommendations put forth by governments and health authorities have converged toward the model. Such convergence suggests that evolutionary anthropology can make significant contributions to human health.


  Steve Parker, M.D.

Effect of Paleo Diet on Body Composition & Carbohydrate and Fat Metabolism of Professional Handball Players

Not your average cave-woman

This research out of Poland doesn’t interest me right now. You can read the entire article for free! Let us know what you think.

Abstract

The Paleo diet (PD) involves a restriction of carbohydrates and increased fat content (35% energy from carbohydrates, 35% energy from fats and 30% energy from protein). The aim of this study was to examine the effect of the PD on body composition, concentration of carbohydrates and lipids, as well as insulin, irisin, adiponectin and leptin in the blood. A total of 25 handball players were assigned to two groups: 14 in the experimental group (PD) and 11 in the control group (CD), using a PD and a rational diet, respectively. Analysis of body mass and body composition (body mass index, fat mass, lean body mass, fat-free mass, muscle mass, bone mineral content and bone mineral density), as well as blood concentration of metabolism markers (glucose, insulin, total cholesterol, HDL-cholesterol, non-HDL-cholesterol, LDL-cholesterol, triglycerides, free fatty acids, β-hydroxybutyrate, irisin, adiponectin and leptin), were determined at the beginning and after 4 and 8 weeks of nutritional intervention. Body mass was lower (p < 0.01), and adiponectin blood concentration was higher (p = 0.03) in the PD group at the end of the intervention. There were no changes (p ≥ 0.05) in body composition and blood levels of other biochemical markers in either group.


  Steve Parker, M.D.

10,000 Steps a Day for Health & Longevity: Based on Science or Marketing?

Photo by Blue Bird on Pexels.com

For perhaps 15-20 years, many health experts have recommended you walk 10,000 steps/day as important for maximizing your health and longevity. Depending on your stride length, that’s roughly 5 miles (8 km). When I walk my dogs 4 miles, it takes about 90 minutes, which is a big time commitment. Frankly, it’s often boring. But not for the dogs. So many fascinating odors!

Photo by Pixabay on Pexels.com

The good news is, you don’t need to walk the 10,000 steps in one fell swoop. Your walking around your residence and workplace throughout the day counts, too.

More good news. If you’re an older woman, maybe 4,400 steps/day is enough for a longevity benefit. In other populations studied, 6,000 to 8,000 steps/day was optimal.

I admitted a patient to the hospital a few days ago who told me her health insurer sends her a small check monthly if she meets their step goal. She’s saving them money via lower healthcare expenditures, and they’re sharing with her. I love it!

  Steve Parker, M.D.

Paleo Diet Effect on Athletes’ Health and Sport Performance

Photo by Enric Cruz López on Pexels.com

This research from Poland doesn’t look very interesting to me, so I’ve not read the free full text of the article. Let us know what you think.

Abstract

The aim of the study was to assess the impact of an eight-week Paleo diet on the health status (body composition, haematology and biochemistry of blood and urine) and the level of physical capacity (aerobic and anaerobic) of professional handball players. Fifteen athletes were assigned to two groups: 9 in the experimental group (PD) and 6 in the control group (CD). Significant decreases in body mass (BM), body mass index (BMI), and fat mass (FM) as well as an increase in the fat-free mass (FFM) (%) in both groups were observed. There were no significant differences between groups in particular series during the experiment in all haematological and biochemical indicators of blood and urine. Only HDL-C was significantly higher in the last series in the PD compared to the CD (1.63 mmol/l vs. 1.23 mmol/l). In the Wingate test, there were only single intragroup changes, consisting of a significant decrease in the Wt, MAP and Pmean in the experimental group. There were no significant differences between the groups in individual series or intragroup differences during the experiment, determined by the VO2max, VEmax, VE ∙ VCO2 -1, RER, and the time of the test with a gradually increasing load on a treadmill, except for a significant decrease of maximum tidal volume (TVmax) in the PD. No adverse effect of the Paleo diet on the health status was found. The use of the Paleo diet slightly adversely affects anaerobic capacity and does not affect the level of aerobic capacity.


  Steve Parker, M.D.

Neurontin and Lyrica for Pain Suppression: Do They Work?

“You can take this pill, but there’s not much evidence it does any good.”

Physicians in the U.S. who prescribe opioids need a license from the Drug Enforcement Administration and it has to be renewed periodically. By the time of my next renewal, I must be able to prove to the DEA that I’ve had six (eight?) hours of approved continuing medical education on drug abuse and addiction. Because of the prescription opioid “epidemic” that reared its head several years ago, regulators are putting pressure on prescribers to reduce prescriptions. I’m not saying that’s a bad thing, but it can be taken too far, like expecting a patient with very recent knee or hip replacement surgery to be just fine with acetaminophen (aka paracetamol) alone. Big Pharma has convinced some prescribers to substitute opioids with Neurontin (aka gabapentin) or Lyrica (pregabalin). If not substitution, then augmentation of opioid effect at lower doses. I definitely see that in my part of the world.

Regarding that, here’s a thought-provoking article from Paul Ingraham:

One of the most notorious examples of Big Pharma living up to its reputation for evil-doing is the illegal promotion of anticonvulsant drugs like Neurontin and Lyrica for painful problems like back pain. Pfizer coughed up billions for lawsuit settlements and record-breaking fines. I think it’s safe to say that they didn’t actually pay enough to undo the damage, though…

Thanks to that horror show, and to research by Peet et al, we now know that there was a mighty 5× surge in gabapentin prescriptions in the 2000s and 2010s. That was — and continues to be — a chilling demonstration of the power of under-handed and well-funded marketing. Even as opioid prescriptions fell somewhat, gabapentin scrips rose dramatically, despite the dubious value for most of what it was being prescribed for (most kinds of pain).

  Steve Parker, M.D.

PS: Pregabalin and gabapentin are commonly used and often effective drugs for painful diabetic neuropathy in the U.S. This blog post isn’t about that neuropathic pain.

Having Trouble Losing Weight? Try these 19 Tricks and Tips

Certified paleo-compliant, plus high omega-3 fatty acids and low-carb
  1.  Record-keeping is often the key to success.
  2.  Accountability is another key to success. Consider documenting your program and progress on a free website such as FitDay, SparkPeople, 3FatChicks, or others. Consider blogging about your adventure on a free platform such as WordPress or Blogger, or try the newer social media sites. Such a public commitment may be just what you need to keep you motivated.
  3.  Do you have a friend or spouse who wants to lose weight? Start the same program at the same time and support each other. That’s built-in accountability.
  4.  If you tend to over-eat, floss and brush your teeth after you’re full. You’ll be less likely to go back for more anytime soon.
  5.  Eat at least two or three meals daily. Skipping meals may lead to uncontrollable overeating later on. On the other hand, ignore the diet gurus who say you must eat every two or three hours. That’s codswallop.
  6.  Eat meals at a leisurely pace, chewing and enjoying each bite thoroughly before swallowing.
  7.  Plan to give yourself a specific reward for every 10 pounds (4.5 kg) of weight lost. You know what you like. Consider a weekend get-away, a trip to the beauty salon, jewelry, an evening at the theater, a professional massage, home entertainment equipment, new clothes, etc.
  8.  Carefully consider when would be a good time to start your new lifestyle. It should be a period of low or usual stress. Bad times would be Thanksgiving day, Christmas/New Years’ holiday, the first day of a Caribbean cruise, and during a divorce.
  9.  If you know you’ve eaten enough at a meal to satisfy your nutritional requirements yet you still feel hungry, drink a large glass of water and wait a while.
  10. Limit television to a maximum of a few hours a day.
  11.  Maintain a consistent eating pattern throughout the week and year.
  12.  Eat breakfast routinely.
  13.  Control emotional eating.
  14.  Weigh frequently: daily during active weight-loss efforts and during the first two months of your maintenance-of-weight-loss phase. After that, cut back to weekly weights if you want. Daily weights will remind you how hard you worked to achieve your goal.
  15.  Be aware that you might regain five or 10 pounds (2-4 kg) of fat now and then. You probably will. Don’t freak out. It’s human nature. You’re not a failure; you’re human. But draw the line and get back on the old weight-loss program for one or two months. Analyze and learn from the episode. Why did it happen? Slipping back into your old ways? Slacking off on exercise? Too many special occasion feasts or cheat days? Allowing junk food or non-essential carbs back into the house?
  16.  Learn which food item is your nemesis—the food that consistently torpedoes your resolve to eat right. For example, mine is anything sweet. Remember an old ad campaign for a potato chip: “Betcha can’t eat just one!”? Well, I can’t eat just one cookie. So I don’t get started. I might eat one if it’s the last one available. Or I satisfy my sweet craving with a diet soda, small piece of dark chocolate, or sugar-free gelatin. Just as a recovering alcoholic can’t drink any alcohol, perhaps you should totally abstain from…? You know your own personal gastronomic Achilles heel. Or heels. Experiment with various strategies for vanquishing your nemesis.
  17.  If you’re not losing excess weight as expected (about a pound or half a kilogram per week), you may benefit from eating just two meals a day. This will often turn on your cellular weight-loss machinery even when total calorie consumption doesn’t seem much less than usual. The two meals to eat would be breakfast and a mid-afternoon meal (call it what you wish). The key is to not eat within six hours of bedtime. Of course, this trick could cause dangerous hypoglycemia if you’re taking drugs with potential to cause low blood sugars, like insulin and sulfonylureas. If you take drugs for diabetes, talk to your dietitian or physician before instituting a semi-radical diet change like this.
  18.  One of the fitness bloggers I used to follow was James Fell. He said, “If you want to lose weight you need to cook. Period.”
  19.  Regular exercise is much more important for prevention of weight regain rather than for actually losing weight.

    Steve Parker, M.D.

A Hundred Years From Now, You and Everyone You Know Will Be Dead

Only one thing really matters. That’s your relationship with Jesus Christ/God. Who was Jesus? Did he exist? Was he crucified for your eternal salvation?

Jesus is my Lord and Savior. He died for my sins. After my death, I’ll be with him in heaven forever.

Steve Parker, M.D.

Merry Christmas, Everyone!

Credit: Zvonimir Atletic / Shutterstock.com

Will You Participate In Dry January?

See you in February. Or not.

I’ve run across a number of patients who slowly increased their alcohol consumption over months or years, not realizing it was causing or would cause problems for them. Alcohol is dangerous, lethal at times.

From a health standpoint, the generally accepted safe levels of consumption are:

  • no more than one standard drink per day for women
  • no more than two standard drinks per day for men

One drink is 5 ounces of wine, 12 ounces of beer, or 1.5 ounces of 80 proof distilled spirits (e.g., vodka, whiskey, rum, gin).

Dry January was conceived in the UK in 2012 or 2014. (A related concept is Sober October.) The idea is simply to abstain from all alcohol for the month of January. The Alcohol Change UK website can help you git ‘er done. Many folks notice that they sleep better, have more energy, lose weight, and save money. There are other potential benefits.

If you think you may have an unhealthy relationship with alcohol, check your CAGE score. It’s quick and easy.

Alternatively, if you make a commitment to a Dry January but can’t do it, you may well have a problem.

Steve Parker, M.D.

PS: Check out this video about the benefits of sobriety.

PPS: This guy quit drinking alcohol for 30 days: