News, Commentary & Opinion

The Journal of Holistic Performance
  • Articles
    • Journal
    • Blog
  • For Authors
  • Contact
  • Study

More Junk Science from 'Nutrition Facts'

30/5/2015

Comments

 
By Cliff Harvey

According to Dr Michael Gregor of Nutrition Facts “People going on low carb diets may not see a rise in their cholesterol levels. How is that possible? Because weight loss by any means can drop our cholesterol. We could go on an all-Twinkie diet and lower our cholesterol as long as we didn’t eat too many. A good cocaine habit could do it. Anything that drops our weight can drop our cholesterol, but the goal isn’t to fit into a skinnier casket; the reason we care about cardiovascular risk factors like cholesterol is because we care about cardiovascular risk, the health of our arteries.”


Now we have to remember that Nutrition Facts is a vegan advocacy group. And while we at HPN have nothing against a vegan diet (in fact we think that a healthy diet can be vegan or meat containing…it really doesn’t matter!) we do have an issue with junk science. The above statement is extremely limited...and quite frankly untrue!

The crux of the cardiovascular argument from Nutrition Facts now that they can’t rest on low-carb diets negatively affecting blood lipids seems to rest on the purported effect of a higher protein, or higher fat, lower carbohydrate diet on blood flow to the heart. However even Dr Gregor concedes that “There has only been one study ever done measuring actual blood flow to the heart muscles of people eating low-carb diets.”

In this one published study Dr. Richard Fleming (1) enrolled 26 people into a comprehensive study of the effects of diet on cardiac function and measured blood flow within the coronary arteries. The 26 were initially instructed to follow a low fat, low protein, high carbohydrate diet in conjunction with various medical treatments depending on the case. AT the conclusion of the year long study it was found that 10 of the participants had switched to a ‘high protein’ diet, and so comparisons were made between those following the high carb, versus the high protein diet.

The problem with  this is that it is always problematic when you change the outcomes you are looking at in an ‘after the fact’ manner. The ‘high protein’ diet is undefined and it is unlikely that the patients were following a homogeneous diet, nor one that was designed for them. Thus it may have simply been a poor diet that they followed. Those who ‘switch’ from an intervention are also more likely to be less compliant overall and it is therefore doubtful that they would have followed the other dietary protocol effectively even if it were a) defined and b) appropriate.

Overall this study says almost nothing about cardiac risk associated with a lower carbohydrate diet, and to ignore the confirmed effects of disglycaemia on cardiac health and the voluminous data showing positive effects on cardiac risk factors from lower-carbohydrate, whole-food based diets is disingenuous at best.  
Learn more about studying nutrition with hpn!


​References

1. Fleming, R. M. (2000). The effect of high-protein diets on coronary blood flow. Angiology, 51(10), 817-826.
Comments

    RSS Feed

    Categories

    All
    Brain Health
    Carb Appropriate
    Clinical Nutrition
    Dairy
    Disease
    Exercise
    Fasting
    Genetics
    Gut Health
    Health
    Infographics
    Interviews
    Keto
    LCHF
    Lifestyle
    MCTs
    Meat
    Media
    Meet Our Advisors
    Meet Our Graduates
    Mushrooms
    Nutrition
    Paleo
    Pregnancy
    Public Health
    Research Review
    Skin Health
    Sleep
    Sugar
    Supplements
    Time Rich Practice
    Women's Health

    Archives

    September 2020
    June 2020
    May 2020
    March 2020
    March 2019
    May 2018
    April 2018
    March 2018
    February 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014
    June 2014
    May 2014
    April 2014
    March 2014
    February 2014
    December 2013
    February 2013
    January 2013


Sign up for articles and nutrition news



Donate

© 2020 Holistic Performance Limited
Photos used under Creative Commons from marcoverch, wuestenigel, Rawpixel Ltd, wuestenigel, Rinet IT, Infinity Studio, Herbert Guedes, Brett Jordan
  • Articles
    • Journal
    • Blog
  • For Authors
  • Contact
  • Study