Weather data show cold temperatures raise risk of heart attacks

The temperatures are dropping and a new report in JAMA Cardiology is warning that, with the colder weather, your risk of a heart attack increases. You’ve probably heard that before, but what’s new is this is the first time a study has followed both weather data and heart attack occurrences for so long — 16 years, The Washington Post said. Data showed that heart risk was highest at below-freezing temperatures.

There is an epidemic of heart disease in the U.S. and some of the factors associated with it are obesity, high blood pressure, smoking and diabetes. As today’s featured article suggests, if you’re one who is already at risk for a heart attack because of any of these factors, you have an even greater chance of having a cardiac crisis when the temperatures dip.

If you live in an area where particulate matter pollution is high, then you need to pay close attention, as even a small amount of air pollution on colder days could increase your risk of experiencing sudden cardiac death (SCD). You can read more about how air pollution poses a danger to your health by reading my article, "The Air We Breathe Is More Polluted Than You Know."

But, in short, air pollution causes your body’s inflammatory responses to heighten as you inhale the mix of small particles and liquid droplets in the air, and previous studies have made it clear these particles team up with cold temperatures to damage both your lung and vascular tissues. This puts a strain on your circulatory system, increasing your risk of loss of oxygen to your heart muscle.

Unfortunately, even a small amount of air pollution on colder days could increase your risk of experiencing cardiac arrest, making for a perfect storm that increases inflammation and constricts blood supply to your heart. Then, when you add increased physical activity to the equation, such as shoveling snow, you place just enough additional stress on your heart to risk SCD.

Another cold weather factor you may not consider is that breathing colder air affects the ability of the cells in your nose to react to an invading virus, and thus may increase your risk of developing cold or influenza symptoms. Coupled with those air particulates, the conditions are perfect for affecting your immune system, too, making you more likely to get sick when the weather gets cold.

Fortunately, you can start pumping up your immune system now by making sure that you eat a healthy diet with plenty of healthy omega-3s, vitamin C (such as what you find in citrus fruits, red bell peppers, butternut squash, papaya, tomatoes and more) and building up adequate amounts of vitamin D, preferably through sun exposure. If you do choose to supplement, just remember that you need to take addition vitamin K2 — MK7 form — to protect your arteries.

For full references please use source link below.


By Dr Joseph Mercola / Physician and author

Dr. Joseph Mercola has been passionate about health and technology for most of his life. As a doctor of osteopathic medicine (DO), he treated thousands of patients for over 20 years.

Dr. Mercola finished his family practice residency in 1985. Because he was trained under the conventional medical model, he treated patients using prescription drugs during his first years of private practice and was actually a paid speaker for drug companies.

But as he began to experience the failures of the conventional model in his practice, he embraced natural medicine and found great success with time-tested holistic approaches. He founded The Natural Health Center (formerly The Optimal Wellness Center), which became well-known for its whole-body approach to medicine.

In 1997, Dr. Mercola integrated his passion for natural health with modern technology via the Internet. He founded the website to share his own health experiences and spread the word about natural ways to achieve optimal health. is now the world’s most visited natural health website, averaging 14 million visitors monthly and with over one million subscribers.

Dr. Mercola aims to ignite a transformation of the fatally flawed health care system in the United States, and to inspire people to take control of their health. He has made significant milestones in his mission to bring safe and practical solutions to people’s health problems.

Dr. Mercola authored two New York Times Bestsellers, The Great Bird Flu Hoax and The No-Grain Diet. He was also voted the 2009 Ultimate Wellness Game Changer by the Huffington Post, and has been featured in TIME magazine, LA Times, CNN, Fox News, ABC News with Peter Jennings, Today Show, CBS’s Washington Unplugged with Sharyl Attkisson, and other major media resources.

Stay connected with Dr. Mercola by following him on Twitter. You can also check out his Facebook page for more timely natural health updates.

(Source:; November 7, 2018;
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