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The 4 Best Reasons Why Intermittent Fasting May Prevent Atrial Fibrillation (and an early death)

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The Longevity Plan with Dr. John Day
Duration: 16:30
The 4 Best Reasons Why Intermittent Fasting May Prevent AFib
Fasting has been shown to slow aging and help most chronic medical conditions but can intermittent fasting also prevent atrial fibrillation? In this article, I'll share everything you need to know about intermittent fasting's role in atria
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The 4 Best Reasons Why Intermittent Fasting May Prevent AFib
Fasting has been shown to slow aging and help most chronic medical conditions but can intermittent fasting also prevent atrial fibrillation? In this article, I'll share everything you need to know about intermittent fasting's role in atrial fibrillation prevention.
Why Did I Write this Article?
My long-term readers know I've always been impressed by the strong data supporting intermittent fasting for longevity and cardiovascular health. Indeed, both of our books, The Longevity Plan and The AFib Cure, had a section on intermittent fasting. The reason why I chose to cover this topic again came from a recent podcast interview I heard with Dr. David Sinclair.

For those not familiar with Dr. David Sinclair, he is a Harvard University longevity researcher. And interestingly, the person who helped him write his New York Times best-seller, Lifespan, was the same person who helped me write The Longevity Plan and The AFib Cure.

In this podcast, Dr. David Sinclair reported that he doesn't snack and only eats one meal a day. As someone who has always struggled with fasting, my goal is that writing again on the topic of intermittent fasting will help me to redouble my efforts to fast regularly. And to help you redouble your efforts, below are my 4 best reasons why intermittent fasting may prevent AFib.
1. Fasting May Slow Aging
Researchers have long known that caloric restriction, or eating the absolute minimum number of calories to keep the body functioning, makes animals of all types live longer. Indeed, if you're a rat you'll live 80% longer with caloric restriction. But while caloric restriction works great for animals in a controlled experiment, it is almost impossible for humans to maintain caloric restriction long-term.

The beautiful thing is that humans may not need to calorically restrict themselves to achieve this longevity boost. Indeed, intermittent fasting activates the same genes that caloric restriction does.

How does this happen? Studies show that periodic fasting activates an energy-sensing protein called AMP-activated protein kinase (AMPK), which then keeps the energy center of the cell, the mitochondria, in a “youthful” state.

With regards to AFib, as age-related fibrosis (or scarring) of the left atrium is a significant driver of AFib, anything that slows the aging process would be expected to also slow the development of AFib. Indeed, based on a study we were involved with at Intermountain Medical Center, shorter telomeres, which is a marker of premature aging, was associated with atrial fibrillation.
2. Fasting May Lower Blood Pressure 10 mmHg
When we fast, blood sugar levels are less likely to spike high. The research is pretty clear, the more time we can give our bodies a break from food the better our insulin sensitivity, the slower our body "rusts" with aging, and the lower our blood pressure runs.

And when it comes to AFib, lower is usually better. Indeed, studies show that high blood pressure doubles the risk of AFib. So if you suffer from AFib, the goal is to keep your blood pressure always below 130/80 mmHg. But if your goal is to maximize longevity, then the research suggests a blood pressure in the range of 110/70 mmHg, without the help of blood pressure medications, is where you probably need to be.
3. Fasting is Good for a 9 Pound Weight Loss
If you're looking for a quick 9-pound weight loss, then the science suggests you may want to try intermittent fasting. For example, I have found that when I skip dinner I eat approximately 500 fewer calories for the day. And these 500 fewer calories are maintained even after accounting for any "make-up" calories I may consume on the following days.

While most people practice intermittent fasting by skipping breakfast, medical science argues the opposite. Studies show that if you're going to skip a meal, skipping dinner is best. To optimize health and longevity,
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