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The Bad News About BUTTER

 

By Kevin DiDonato MS. CES


One of the fondest memories I have of my grandmother involves sleepovers on Friday nights.

We would stay up later than normal…have warm milk…and buttered toast in the shape of triangles.

When I went to college and took my first nutrition course, that memory was dashed because of the butter that happened to be spread on the toast.

Fast forward to today and the thinking on butter—and other cholesterol-related foods—has turned an important corner.

No longer are these foods thoughts to contribute to heart disease, but may instead add some improvements to heart health.

And a new study is once again challenging the old thoughts on butter, vegetable oil, and heart health.

Butter vs. Vegetable Oil

Back in the 1970’s, there was a push by the American government to reduce the intake of butter.

The reason: ONE study published showed a very casual relationship between intake of saturated fat (found in butter) and the risk for heart disease.

It wasn’t a strong correlation, but a correlation nonetheless.

So, the butter was the enemy and the only thing that could save your heart was to switch butter for vegetable-oil based products, such as margarine and oil.

But, today, a new study is challenging the thought that butter—and the saturated fat found in the butter—could impact your heart health.

So what does the study show?

Plenty! 

So here’s what researchers did:  They took the results and previously unpublished documents from the 1968-73 study.

The purpose of the study was to show that replacing saturated fats with vegetable-oil based products would improve the health of the heart.

In the study, they separated people into two groups.  One group (intervention group) received corn oil and corn-oil based margarine and the other group (control group) consumed meats, dairy, and butter for their fat intake.

Now here’s where it gets interesting!

The intervention group showed lower cholesterol levels when compared to the control group.  However, the researchers pointed out that with every 30 mg/dl drop in cholesterol, there was a 22 percent increased risk for death.

Simply put, the lower the cholesterol levels drop, the higher the risk for death.

To further hammer the point home, the researchers have stated “There was no evidence of benefit in the intervention group for coronary atherosclerosis or myocardial infarcts.”

Basically, even though the use of vegetable oil was highly touted for improving heart health, there was no direct evidence showing

And in other examinations of the research, the researchers stated there is no direct evidence to show these types of interventions (vegetable oil based interventions) reduced the risk for coronary artery disease or heart attacks compared to diets with higher saturated fat intakes.

They concluded: “Available evidence from randomized controlled trials shows that replacement of saturated fat in the diet with linoleic acid effectively lowers serum cholesterol but does not support the hypothesis that this translates to a lower risk of death from coronary heart disease or all causes. Findings from the Minnesota Coronary Experiment add to growing evidence that incomplete publication has contributed to overestimation of the benefits of replacing saturated fat with vegetable oils rich in linoleic acid.”

Take Home Message

Back in the 1970’s, people were warned that too much saturated fat in your diet would lead to heart disease, heart attacks, or even death.

However, flash forward to today, and the tune has changed regarding cholesterol and saturated fats.

And to hammer the point that these foods aren’t as bad as once thought, a new study shows that those who use vegetable oils in place of saturated fats were more likely to have a heart attack due to the drop in cholesterol levels.

The take home message here is that saturated fat foods should be part of a healthy diet, as they provide many benefits to the body.

So, for your health, keep healthy fats within the recommended ranges for optimal health.

 

References:

Ramsden CE, Zarnora D, Majchrzak-Hong S, Faurot KR, Broste SK, Frantz RP, Davis JM, Ringel SK, Suchindran CM, Hebbeln, JR.  Re-evaluation of the traditional diet-heart hypothesis: analysis of recovered data from Minnesota Coronary Experiment (1968-73).  BMJ.  2016;353.

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