Hogwash: New research says heart-healthy diets and supplements don’t work

This month an astounding report was published in the Annals of Internal Medicine claiming little if any reduction in heart disease outcomes is obtained through nutritional supplements and dietary interventions.

Unfortunately for me, I know too much to let this claim stand without a rebuttal.

This study, published earlier this month, was aimed at finding the true effects of nutritional supplements or dietary interventions on all causes of death or heart disease outcomes such as heart attack death, heart attack, stroke, and heart artery disease.

These study authors looked only at randomized controlled trials (RCTs) and their meta-analyses — which indeed are the most powerful data to draw from — but this research “gold-standard” still misses a lot of data that should be considered.

While there are 14 investigators named in the study title, only two independent investigators abstracted data, assessed the quality of evidence, and rated the certainty of evidence.

At least one researcher received grant money and personal fees for other projects from the FDA, Aetna Foundation and several pharmaceutical giants including, Sanofi, Novartis, Novo Nordisk, and Bayer!

In all, 992,129 participants were included. The problem is that who knows what bias they had while selecting data and analyzing its quality?

The authors begin by stating, “The role of nutritional supplements and dietary interventions in preventing mortality (death) and cardiovascular disease outcomes is unclear.” Really? OK, then now they are going to build upon that false premise.

Their findings were that “Reduced salt intake (in people without high blood pressure), omega-3 long-chain polyunsaturated fatty acid (LC-PUFA) use, and folate supplementation could reduce risk for some cardiovascular outcomes in adults” and that “Combined calcium plus vitamin D might increase risk for stroke.”

Then they accurately state, “Other nutritional supplements, such as vitamin B6, vitamin A, multivitamins, antioxidants, and iron and dietary interventions, such as reduced fat intake, had no significant effect on mortality or cardiovascular disease outcomes (very low- to moderate-certainty evidence).”

Can you detect here the confusion they created with this report? If not, let me explain.

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Confusion created

This study has led to prominent online postings with such titles as “Supplements and dietary interventions offer little (if any) protection against heart disease, study finds.”

They have confused many people to conclude that the supplements and the (limited) dietary interventions these authors evaluated were important data to evaluate.

Notice that the investigators did not study nutrient-rich whole (and mostly raw) foods, i.e. “plant-based” diets which are well known to cause a tremendous effect on lowering death rates, heart disease, and stroke.

The investigators did also not evaluate the supplements known to reduce cardiovascular disease risk.  I will show you what I mean, and why this recent online article is absolutely false and misleading, which stated, “Nutritional supplements and dietary interventions provide no protection against cardiovascular disease and early death, according to a major new analysis of dozens of studies on the topic, which was published Monday in the Annals of Internal Medicine.”

And see how the subsequent sentence in that report is also incorrect: “The only possible exceptions were a low-salt diet and two supplements — folate (folic acid) and omega-3 fatty acids (fish oil).” That’s ridiculous. Let’s look at the data.

Supplements and dietary interventions are shown to be effective

Let’s look at some evidence proving the cardioprotective effects of nutrient-rich, plant-predominate diets.

First, there is the work of the Lifestyle Heart Trial directed by Dr. Dean Ornish and associates…

Their findings reported in the Journal of the American Medical Association nearly 20 years ago concludes, “In summary, these ambulatory patients were able to make and maintain comprehensive changes in diet and lifestyle for 5 years and showed even more regression of coronary atherosclerosis after 5 years than after 1 year as measured by percent diameter stenosis. In contrast, patients following more conventional lifestyle recommendations showed even more progression of coronary atherosclerosis after 5 years than after 1 year and had more than twice as many cardiac events as patients making comprehensive lifestyle changes.”

Then there is the work of T. Collin Campbell and colleague in the Cornel China Study who reported their findings approximately 20 years ago. More than 20 researchers spanning 40 years of compiled mortality data from both animal studies and approximately 650,000 rural Chinese was collected and analyzed from 130 villages in rural mainland China. This data was correlated with nutritional factors where fiber intake was 3 times higher and animal protein intake at approximately 10% of the U.S. intake. They found coronary artery disease mortality was 16.7-fold greater for U.S. men and 5.6-fold greater for U.S. women than for their Chinese counterparts. They stated that the coronary artery disease death rates for both genders in rural China were inversely associated with the frequency of intake of green vegetables and monounsaturated fatty acids. Correspondingly, they found blood biomarkers (apolipoproteins) were lowered as plant protein, legume, and light-colored vegetable intake increased. Plus, there was no evidence of a threshold beyond which further benefits did not accrue with increasing proportions of plant-based foods in the diet.

How about this interesting study reported in the British Medical Journal in 1996.  In this study, 4336 men and 6435 women were recruited through health food shops, vegetarian societies, and magazines. After a mean of 16.8 years follow up, overall the cohort of healthy eaters had a mortality about half that of the general population. Within the cohort, daily consumption of fresh fruit was associated with significantly reduced deaths from heart disease, stroke and all causes combined.

Supplements shown to help lower heart disease risk

We know that synthetic vitamins don’t do much for us. The study authors name vitamin B6, vitamin A, multivitamins, iron and antioxidants [but which antioxidants they did not say] as supplements that don’t make a difference for heart disease and death reduction.

Related: Foods and supplements for healthy circulation

Let’s look at ones that are proven to work:

  • Nutrient IP-6: this is a food nutrient called inositol hexaphosphate (IP6, or “phytate”) that helps keep calcium out of the artery walls and in the bones where it should be. A 2006 animal study reported in Frontiers in Bioscience showed a highly significant reduction in the calcium content of aorta and heart tissue when treated with IP-6.  Human studies mirror this finding; 1,000 mg IP6 daily.
  • Vitamin K2: In addition to IP6, vitamin K2 (menaquinone) activates proteins that prevent excess calcium deposition in your blood vessels. There are the two forms of vitamin K2 called MK-7 and MK-4 “shuttle” calcium out of your bloodstream and into your bones. Vitamin K2 at 100-150 mcg daily decreases C-reactive protein (a non-specific marker of inflammation), increases arterial elasticity, decreases arterial plaque, decreases coronary heart disease and total mortality. The 7-year prospective Rotterdam Study of 4807 subjects (2004), as well as a later 2009 prospective study of 16,057 women supplementing with Vitamin K2, showed a significant reduction in heart attack (at 22-50 mcg daily) and all-cause deaths (at 30-40 mcg daily).
  • L-Arginine at 6 grams daily triggers the natural arterial secretion of nitric oxide which dramatically relaxes arteries for optimal blood flow and has anti-inflammatory effects, which is even more effective in salt-sensitive persons.
  • L-Taurine has pronounced beneficial heart health effects including its blood pressure-lowering effect, best taken at 3 grams twice daily.
  • R-(alpha) lipoic acid lowers blood pressure and improves arterial wall dysfunction through beneficial effects on nitric oxide (the vasodilator) and other mechanisms at the optimal dose of 100-200 mg daily.
  • Alpha-lipoic acid lowers blood pressure; improves endothelial dysfunction; reduces reactive oxygen species and oxidative stress and has other cardioprotective mechanisms. The optimal dose is 300-600 mg twice daily.
  • D-ribose improves angina, heart failure, arrhythmias, weakness, and fatigue at 5 grams 3-4 times daily for those already diagnosed with heart disease.

Well, and there are a host of other nutrients proven to lower risk of cardiovascular disease. The list is long but here is the quick version:

  • Polyphenols: Resveratrol, de- alcoholized red wine, purple grape juice, red grape polyphenolic extract, dark chocolate, and other plant-derived polyphenols have been shown to safely reduce arterial wall inflammation, increase nitric oxide (a vasodilator), and thereby lower both blood pressure and cardiovascular disease.
  • Omega 3 fatty acids (fish or fish oil) at 5 grams daily with EPA/DHA at a ratio of 3:2 lowers endothelial inflammation and at 3 to 4 grams daily it lowers the heart rate by 6 beats/minute and lowers endothelial inflammation.
  • Hawthorne berry mildly reduces systemic vascular resistance.
  • Aged garlic (Kyolic) is clearly cardioprotective and there are multiple mechanisms for this. Clinical experience shows 600 mg twice daily reduces coronary artery plaque progression in people on statins.
  • Berberine: effectively reduced cholesterol levels in hamsters fed a high-fat, high-cholesterol diet in an early study. A 2012 study in humans found that 500 mg three times daily for 12 weeks was more effective in lowering cholesterol than ezetimibe.
  • Nattokinase from the Japanese natto bean is a natural clot buster and helps to keep optimal arterial blood flow.
  • Potassium: a high potassium diet of 5,000 mg daily is recommended (unless you have kidney failure) for optimal heart health and blood pressure.

So much for trying to tell us that “supplements and dietary interventions offer little (if any) protection against heart disease.” In my opinion, that’s pure hogwash.

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Dr. Michael Cutler

By Dr. Michael Cutler

Dr. Michael Cutler is a graduate of Tulane University School of Medicine and is a board-certified family physician with more than 20 years of experience. He serves as a medical liaison to alternative and traditional practicing physicians. His practice focuses on an integrative solution to health problems. Dr. Cutler is a sought-after speaker and lecturer on experiencing optimum health through natural medicines and founder of the original Easy Health Options™ newsletter — an advisory on natural healing therapies and nutrients. His current practice is San Diego Integrative Medicine, near San Diego, California.

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