Gary Null - Does Heart Rate Affect Longevity?

April 16, 2013
Gary Null in Anti Aging, Health, Health Care, Heart Disease

Having spent my entire adult career working with tens of thousands of individuals as a scientist, clinician, and therapist in anti-aging research, it has been my observation that the higher one’s resting heart rate, the more susceptible one is to heart disease and premature death. Considering that we have added nearly ten years to the average lifespan over the last forty years, what can we point to that accounts for this change? A look at the evidence shows that it is multifactorial.

When I was growing up, my parents, aunts and uncles, all smoked two to three packs of cigarettes a day. They drank a lot of alcohol- not to get drunk but to socialize- and they had high concentrations of animal protein, saturated fats and refined carbohydrates. They rarely exercised and more often than not, they internalized their distress. This lifestyle was typical among that generation of Americans.

Today, the last two generations have caused a renaissance in health awareness. Thanks to them, we now know the importance consuming a healthy vegan diet high in raw foods and fresh juices, using supplements, and abstaining from alcohol and smoking. We are aware of how indispensible exercise and more and more people are reaping the benefits of de-stress practices such as yoga and meditation. The combination of all these factors has produced a quantitative change our life expectancy.

As a competitive athlete, having won more than 500 races and competed in more than 600, I have interacted with hundreds of professional athletes. Most of the athletes I have come to know have heart rates between 50 and 65. Most non-athletes, but those who still have a proper diet, have resting pulses between 70 and 80. Those who are overweight, obese, or have diabetes, tend to have pulses between 75 and 85 and often suffer from heart disease and other serious medical conditions that inevitably shorten the lifespan. It is my experience that once they begin to exercise and bring their pulse down by more than 10 points or into the 60 to 70 range, that it increases their lifespan by approximately ten years. I’ve counseled many individuals who were given a very problematic prognosis (i.e., a shortened lifespan). By following the therapies listed above, many of them were able to significantly lower their blood pressure and heart rate. These people went on to live many years longer than what would have been expected and most of them survive today. These experiences helped me arrive at my hypothesis that the lower the heart rate, the healthier the heart, and the longer the lifespan. A review of the scientific research on this subject shows that this hypothesis is well-founded.

Examining the Evidence

In studies on both humans and animals, a clear relationship exists between high resting heart rate and shorter lifespan. In 2010, cardiologist Dr. Eva Lonn of McMaster University presented the results of a study that examined this connection in over 30,000 patients over the course of 4 years to the Canadian Cardiovascular Congress. Speaking before her colleagues, Lonn stated that "the higher the heart rate, the higher the risk of death from cardiovascular and all causes, even after adjusting for all risk factors that could confound our results," ⁱ The study found that individuals with heart rates above 78 beats per minute were 77% more likely to die from heart disease, and 65% more likely to die from all causes, than their counterparts who had a resting heart rate of 58 or below.

These findings are corroborated by numerous other studies that connect an above-average resting heart rate with a significantly increased risk of death, especially from cardiovascular illness.^{ii iiiivvvivii} A study of more than 129,000 women published in the British Medical Journal found that women who had a heart rate of more than 76 ran a significantly higher risk of cardiac arrest and heart disease than those women whose pulse rate was lower than 62.^viii A recent paper out of France noted that “an increase in heart rate by 10 beats per minute was associated with an increase in the risk of cardiac death by at least 20%.”^ix

The connection between heart rate and longevity goes well beyond deaths related to cardiovascular illness. Using data collected during the 25-year-long Paris Prospective Study, which surveyed over 5,000 men aged 42-53, researchers at University Paris Descartes determined “resting and exercise heart rate had consistent, graded and highly significant associations with subsequent cancer mortality in men.”^x Compared to the men with a resting heart rate below 60 beats per minute, those individuals with a heart rate of more than 73 beats per minute were 2.4 times more likely to die from cancer. The results are consistent with previous analyses showing a direct relationship between heart rate with cancer mortality.^xi A study out of Italy known as the MATISS Project investigated the possible association of pulse rate and mortality among Italian middle-aged males. The authors concluded that heart rate was a reliable independent predictor of total mortality.^xii

Not only does a higher heart rate predict a shorter lifespan, but a body of evidence indicates that carrying out heart rate lowering activities such as exercise and meditation may help boost longevity.^xiii In a paper from 2003, researchers at the European Society of Cardiology proposed the following explanation of why resting heart rate may be related to lifespan:

In mammals, the calculated number of heart beats in a lifetime is remarkably constant, despite a 40-fold difference in life expectancy. According to this view, a reduction in heart rate would increase life expectancy also in humans. The heart produces and utilizes approximately 30 kg adenosine triphosphate each day, and slowing its rate by 10 beats/min would result in a saving of about 5 kg in a day. Considering that heart rate is a major determinant of oxygen consumption and metabolic demand, heart rate reduction would be expected to diminish cardiac workload. Clinical studies with beta-blockers have already shown a reduction in mortality and improvement in outcome as a result of reduction in heart rate.^xiv

The authors go on to recommend research into therapies designed to lower heart rate and in turn, potentially increase lifespan. This suggestion is supported by a 2008 report in the Harvard Heart Letter which concluded that engaging in activities aimed at reducing heart rate such as exercise and de-stressing techniques may extend longevity.^xv

i^ Heart and Stroke Foundation of Canada (2010, October 26). High resting heart linked to shorter life expectancy in stable heart disease patients, study suggests. ScienceDaily. Retrieved September 4, 2012, from http://www.sciencedaily.com/releases/2010/10/101026161239.htm

Article originally appeared on The Gary Null Blog (http://www.garynullblog.com/).