Category Archives: Shameless Self-Promotion

Are Fructose and High Fructose Corn Syrup Bad for Us?

Table sugar (sucrose) is a combination of glucose and fructose

Darya Pino earlier this month posted at her Summer Tomato blog a video regarding high fructose corn syrup.  The speaker in the video is pediatric endocrinologist Robert Lustig, M.D., of the University of California—San Francisco.
In the U.S. between 1970 and 1990, consumption of high fructose corn syrup increased over 1000%.  During those two decades, the incidence of overweight and obesity nearly doubled.  Many wonder if this is more than just coincidental. Most of this fructose is in soft drinks.  Soft drink consumption per person in 1942 was two servings per week.  In 2000, consumption was two servings per day.  Of course, these drinks typically have few nutrients other than sugars.

Dr. Lustig is convinced that high fructose corn syrup (HFCS) is a chronic toxin, at least in the amounts many of us eat, and the cause of our current epidemic of childhood and adult obesity and overweight.  Even if this idea is not new to you, you may be interested to hear the biochemistry and physiology behind his position.  If you didn’t enjoy college lectures or are not a food science geek, you probably won’t be able to sit through this 1.5-hour video. 

I enjoyed the heck out of it!  Made me feel like I was back in college again.  Few of my professors were as good as Dr. Lustig at lecturing. 

Here are a few of his other major points:

  • HFCS was invented in Japan in the 1960s, then introduced to U.S. markets in 1975
  • sucrose and fructose are both poisons
  • in the U.S. we eat 63 pounds (28.6 kg) of HFCS and 141 pounds (64.1 kg) of sugar per year [he didn’t define “sugar” in this context]
  • he praises Yudkins book, Pure, White, and Deadly [I’ve written about the Cleave-Yudkin carbohydrate theory of chronic disease]
  • the triglyceride/HDL ratio predicts heart disease much better than does LDL cholesterol
  • chronic high fructose intake causes the metabolic syndrome [does he think it’s the only cause?]
  • only the liver can metabolize fructose, in contrast to every other tissue and organ that can use glucose as an energy supply
  • high fructose consumption increases the risk of gout and high blood pressure
  • fructose interferes with production of our body’s production of nitrous oxide—a natural circulatory dilator—leading to higher blood pressures
  • fructose increases de novo lipogenesis—in other words, it creates body fat
  • fructose interferes with natural chemical messengers that tell your brain you’ve had enough food and it’s time to stop eating
  • high fructose intake reduces LDL particle size, potentially increasing the future risk of cardiovascular disease such as heart attacks [small, dense LDL cholesterol is more damaging to your arteries that large, fluffy LDL]

So What? 

You don’t need polititians to reduce your consumption of sugary soft drinks and high fructose corn syrup—do it yourself starting today.  Read food labels—HFCS is everywhere.  I’ve found it in sausage! 

The food industry greatly reduced use of trans fats in response to consumer concerns, before the polititians ever dabbled in it.  HFCS can go the same route.  Consumption of soft drinks, sports drinks, and other sugary beverages—the major sources of HFCS—is up to you.

Steve Parker, M.D.

PS: The Advanced Mediterranean Diet and Ketogenic Mediterranean Diet are naturally low in fructose.

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Filed under Carbohydrate, Causes of Diabetes, Overweight and Obesity, Shameless Self-Promotion

Walnuts: More Evidence in Favor of Health Benefits

MPj03095770000[1]Nuts are a time-honored component of the Mediterranean diet and may contribute to the lower risk of cardiovascular disease  associated with the diet. 

Regular nut consumption lowers total cholesterol and LDL (“bad cholesterol”) by 5 to 15%, which would tend to lower heart disease risk.  Walnuts are particularly high in alpha-linolenic acid, an omega-3 fatty acid.

Bix over at Fanatic Cook links to three scientific studies showing that walnuts:

  • improved arterial function in people with type 2 diabetes
  • improved arterial function in people with high cholesterol eating a Mediterranean diet
  • decreased fasting insulin levels in people with type 2 diabetes
  • decreased LDL cholesterol in people with type 2 diabetes who were on a low-fat diet

The “dose” of walnuts in these studies was 1–2 ounces (28–56 g) daily.

For good reason, nuts have a prominent role in both the Advanced Mediterranean Diet and Ketogenic Mediterranean Diet

I don’t know Bix, but he or she seems to base many of his/her nutrition opinions on scientific principles, which I appreciate.

Steve Parker, M.D.

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Filed under coronary heart disease, Mediterranean Diet, nuts, Shameless Self-Promotion

My Ketoegenic Mediterranean Diet: Day 48 + Temptation

MPj03878710000[1]Weight: 156 lb

Transgressions: one Metamucil fiber wafer

Exercise: none

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I’m not sure how much longer I can hold out.

I saw one of those cookie diet commercials on TV last night.  I woke up today in a house permeated with the smell of butter, sugar, and chocolate: my daughter’s home-made oatmeal chocolate chip cookies.  Talk about temptation!

Maybe I need to add a “cheat day.”  Eat reasonable amounts of “regular food”—carbohydrates in this case—one day a month or every two weeks.  The Advanced Mediterranean Diet has one every two weeks.  If it’s in the rules, it’s not really cheating, right? 

-Steve

PS: No leg cramps for the last three days since starting a magnesium supplement.

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Filed under My KMD Experience, Shameless Self-Promotion

Dr. Steve Parker Now Blogging Also at NutritionData.com

I am pleased and honored to be blogging for the next three months with the merry band of bloggers at NutritionData.com.  I’ve been visiting and recommending ND for years.

I will be writing in the NutritionData Heart Health Blog.

My compadres at ND are

  • Monica Reinagel, M.S., L.D.N., C.N.S.; ND’s chief nutritionist and a prolific author
  • Dana Lilienthal, M.S., R.D.
  • Stephen Cabral, C.S.C.S, C.P.T., N.S.
  • Elaine Murphy, B.A., C.N.C.

[Gee, now I feel like I need more letters after my name!]

Please take time to visit the NutritionData website, or see my review of it here.  The site is frequently updated and improved, so my review may be outdated.

I’ll still be posting here at my usual frequency, about twice weekly.

Steve Parker, M.D.

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Filed under Shameless Self-Promotion