Insulin Resistance Linked to Brain Shrinkage (Atrophy)

MRI scan of brain

MRI scan of brain

…according to a new report in Diabetes Care.  As if that weren’t bad enough, brain functioning was also adversely affected! The next question is: Would prevention or reversal of insulin resistance preserve the brain?  Stay tuned, because nobody knows yet.

Only a few of the study participants had diabetes.  The study at hand supports others that suggest diabetes predisposes to dementia.

What Can I Do About It Now?

You could have your doctor order some expensive blood tests to see if you’re insulin resistant. (Insurance may not pay for them, either.) Or you can measure your waist size. If your waist circumference is over 39 inches (99 cm) and you’re overweight or obese, odds are good that you have some insulin resistance.

A couple ways to improve your insulin sensitivity (reduce insulin resistance) are:

  • lose your excess fat weight
  • start a regular exercise program

Steve Parker, M.D.

U.S. Memorial Day Poem: “It Is the Soldier”

It is the Soldier, not the minister

    Who has given us freedom of religion.

It is the Soldier, not the reporter

    Who has given us freedom of the press.

It is the Soldier, not the poet

     Who has given us freedom of speech.

It is the Soldier, not the campus organizer

     Who has given us freedom to protest.

It is the Soldier, not the lawyer

     Who has given us the right to a fair trial.

It is the Soldier, not the politician

     Who has given us the right to vote.

It is the Soldier who salutes the flag,

Who serves beneath the flag,

     And whose coffin is draped by the flag,

     Who allows the protester to burn the flag.

 —Charles M. Province

B. Stone Slams My “Advanced Mediterranean Diet” Book

…with a 1-star review at Amazon. For example:

I do NOT recommend this book. If you buy it anyway, talk it over with more than one well qualified physician before using the advice it contains.

The other reviews are better.

My Grand Canyon Hike

Steve Parker MD, arizona, colorado river, grand canyon

Me and my Merrell boots, about 3/4 of the way down to the Colorado river

Twenty of us from BSA Troop 131 hiked to the bottom of the Grand Canyon, then back up and out two days later on a recent weekend. It was a trip of a lifetime for me.

If you’ve never been to the Grand Canyon, you need to see it in person. Photos don’t do it justice.

We descended to the Colorado river on a Friday via the South Kaibab trail. This is about seven mile long and drops 4,800 vertical feet. I was glad to be using trekking poles to take some of the strain off my knees. After four hours hiking, we crossed a bridge over the river and were in Phantom Ranch. By this time, I had been awake for 25.5 hours straight, so I was exhausted.

Phantom Ranch is a collection of cabins that house roughly 40 guests, nestled along Bright Angel Creek. They serve meals at a cantina. So we didn’t have to carry in tents, sleeping bags, or food. The cabins are air-conditioned and have hot/cold running water, toilets, and showers. These must be reserved many months in advance.

We rested and explored the canyon on Saturday, then hiked out on Sunday starting at 7 AM. To get back to the rim, we took the Bright Angel trail, which is about 10 miles long. I hiked out in five and a half hours, ahead of most of the other adults because I had to be at work in the hospital at 6 PM the same day. Everybody was out of the canyon in six and a half hours or less. Some of the scouts made it out first, ahead of me.

As you might imagine, this is not a trip you do on a whim. All of us had been doing training hikes for the previous four months, including at least two that were 10 miles in length. One of those covered 2,400 vertical feet of elevation.

One of the highlights of the trip for me was seeing my first wild ringtail, a mammal about the size of a house cat that has a body that moves and looks like a squirrel and has a a ringed tail that’s longer than its body.

Our troop seems to do this trip every other year. Lord willing, I’ll be back in the canyon in 2015!

Many thanks to Cindy M for leading us!

-Steve

Steve Parker MD

You can appreciate how wide the trail is, which indicates this is close to the rim, where day-hikers tread

Steve Parker MD

South Kaibab trail. Not for you if you have a fear of heights.

Steve Parker MD

Switchbacks on the South Kaibab trail

Steve Parker MD

Colorado River as seen from South Kaibab trail

Steve Parker MD

Phantom Ranch is nestled in the greenbelt in the upper right corner

Steve Parker MD

View from South Kaibab trail, closer to the rim than the river

Steve Parker MD

One of two bridges over the Colorado river quite near Phantom Ranch

Steve Parker MD

The 10-bed dorm I slept in. Cramped, but you spend little time here.

Steve Parker MD

Bright Angel Creek within Phantom Ranch. I ate lunch sitting on a rock in the middle of the stream. Spring-fed, undoubtedly.

Steve Parker MD

One of many mule deer at Phantom Ranch. They had little fear of us.

Steve Parker MD, arizona, grand canyon

Bright Angel Trail, close to the rim. Many day-hikers here.

Food Manufacturers Have Significantly Cut Trans Fats But Not Eliminated Them

…according to an article at MedPageToday. Trans fats are thought to cause or aggravate heart and vascular disease.

As long as a food serving has under 0.5 g of trans fat per serving, the manufacturers in the U.S. can claim “zero” trans fat. If you see “partially hydrogenated vegetable oil” in the ingredients list, the product has trans fat. From the article:

To assess changes in levels of trans fats in food products, Mozaffarian and colleagues looked at 270 products from prominent brands — including General Mills, Kellogg Company, Heinz, ConAgra, Safeway, Giant, Campbell Soup, Sara Lee, and Walmart — that were selected from certain large supermarkets and sold between 2007 and 2011.

They found that by 2011, 66% of those products had reduced levels of trans fats, with a mean decline of 1.5 grams per serving and a mean 78% drop in trans fat content in that group.

Most of these reformulated products (82%) reduced trans fat content to less than 0.5 grams per serving, but half of them still contained partially hydrogenated vegetable oils in the ingredients list, the researchers found.

Binge Eating Disorder May Be Treated With Stimulant Drug In Future

…according to a preliminary report at MedPageToday. The drug is lisdexamfetamine dimesylate, sold in the U.S. as Vyvanse. From the article:

Binge eating disorder is now officially recognized in psychiatry’s diagnostic manual, with its inclusion in the newly released fifth edition of the APA’s Diagnostic and Statistical Manual of Mental Disorders, or DSM-5. But patients experiencing periodic urges to eat large quantities of food even when not particularly hungry, and who suffer guilt and self-loathing afterward, have been coming to psychiatrists for many years.

Did Angelina Jolie Make the Right Decision to Have Surgery?

Dr. Cate says, “No.”

Dr. David Gorski, “Yes.”

Women with the BRCA-1 or -2 gene have a greatly increased risk of developing breast cancer. Bilateral mastectomy is one way to prevent most future breast cancers and prolong life in those women.

Breast cancer is one of the cancers that appears to be prevented by the Mediterranean diet. Not all breast cancers, of course. But the Mediterranean diet has never been studied as a cancer reduction strategy in women with BRCA genes. By no means am I suggesting that Ms. Jolie should have kept her breasts and simply ate Mediterranean-style. 

Women with BRCA genes are also prone to ovarian cancer, another cancer whose incidence is reduced by the Mediterranean diet. (Mediterranean dieters also have lower risk of prostate and colorectal cancer.)

Cancer reduction is one of the major reasons nutrition experts favor the Mediterranean diet.

Fit Middle-Agers Have Less Heart Failure

It’s a struggle to keep your fitness up, much less improve it, as you age. But it’s worth it. See MedPageToday.

1 in 5 U.S. Kids Has a Psychiatric Disorder?

I don’t buy it. Sounds like the shrinks or drug pushers are trying to drum up business. Details at MedPageToday.

Low Vitamin D Status Predicts Risk of Hip Fracture

I thought we already knew that. MedPageToday has the details.