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More Health and Nutrition Bites

Mushrooms vs. Meat 09/20/17
Good news for GERD sufferers 09/14/17
Reseal the bag 09/06/17
Low-carb beats low-cal (except when it isn't) 08/30/17
The power of movie tie-ins 08/23/17
Diet sodas may still increase your risk of diabetes 08/16/17
Fight hunger - with chewing gum 08/09/17
Should you eat more frequently? Probably not 07/26/17
Drink coffee, live longer 07/19/17
Which fats are linked with diabetes risk? 07/12/17
Low fat diets may actually be bad for you 07/05/17
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Coffee and Cholesterol
Last week we talked about coffee and its effects on the cluster of symptoms that make up Metabolic Syndrome, which include poor cholesterol scores, including high triglycerides and low HDL (good cholesterol); a high level of fat around the internal organs; high blood pressure and blood sugars; and waist measurements over 35 inches for women and 40 inches for men. While that study did not see a link between coffee and blood pressure or cholesterol scores, that was what is known as a cross-sectional study, in which the researchers look at a snapshot in time.

No Added Sugar
In the last several decades we here in the United States have eaten more and more sugar, mostly in the form of "added sugars." These sweeteners are usually in the form of sucrose and high-fructose corn syrup and are intended to make highly-processed foods taste better (or more accurately, sweeter). The most recent dietary data we have shows that more Americans over the age of 2 consume almost 16% of their total daily calories in the form of these added sugars.

Just a little olive oil makes a big difference
Olive oil has a well-deserved reputation for helping to reduce the risk of heart disease. Most of that reputation is from research into the Mediterranean Diet, so named because it is a collection of dietary habits followed by those in the region of the Mediterranean Sea (see my article on the Mediterranean Diet for more details).


 

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Good news on cholesterol



a prescription-style pill bottle lying on its side with several pill capsules spilling from it

My Health & Nutrition Bites are designed to share with you actionable, evidence-based nutrition information, and most of the time that's exactly what we do. But focusing on helping you improve your health, while a positive goal, can sometimes be a little bit of a downer: "reduce your risk of death with X," "prevent [some serious disease] with Y," "manage your [chronic condition] by eating more Z".... You'd think we were all living in terror of eating the wrong thing.

It's particularly nice, then, to be able to share some good news: people do seem to be improving their diets.

A team of researchers in the United Kingdom made use of anonymized information gathered through the Health Survey for England, a yearly survey of a nationally representative sample on health, demographic, and other information that started in 1991 (PLOS ONE DOI: 10.1371/journal.pone.0123112). Trained nurses measure participants' height, weight, and blood pressure and take blood samples for testing cholesterol levels, among other health details.

The authors focused on the measures of total cholesterol, comparing the results from the 1991-92 and 2011-12 survey years, noting that the average total cholesterol score had fallen in the intervening years. In those same years, however, more people were using cholesterol-lowering drugs, specifically statins (brand names you know might be Lipitor or Zocor).

We know how much each specific statin and its various strengths can be expected, on average, to affect people's cholesterol scores. With that information, the researchers were able to estimate how much the two-decade drop in cholesterol scores was due to people taking statins.

The good news I mentioned? Only about one-third of the reduction in people's cholesterol scores was due to taking cholesterol-lowering medications. Better still, the authors note that the Health Survey for England also captures how much people exercised - an amount that has "not increased substantially during this period," as they put it. That means that two-thirds of that cholesterol drop is likely to be because people changed their diets - presumably for the better. That's huge!

What this means for you

At this point I would tell my patients, "You're doing great! Don't stop!" Small, incremental changes that you can live with for the long term are your best strategy for improving your diet - and thereby, your health. Following a Mediterranean-style diet is an easy, tasty way to do just that. Find out your Mediterranean Diet score (with tips to improve your score).

First posted: December 9, 2015