The Hormone That Stops Alzheimer’s

The Hormone That Stops Alzheimer’s
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Athletes know that a vigorous workout can lead to “runner’s high.” This is a feeling of euphoria you get when exercise-activated brain chemicals boost your mood.

For years, researchers attributed runner’s high to hormones called endorphins.

But new research shows that exercise produces another hormone. It may have more profound effects than endorphins. It improves memory and may protect against Alzheimer’s disease.

It’s called irisin. Our bodies release it into the bloodstream when we’re active. It seems to play a role in energy metabolism. But researchers have found it also promotes the growth of neurons in the hippocampus. That’s a region of the brain responsible for memory and learning.

Dr. Ottavio Arancio is a researcher at Columbia University’s Vagelos College of Physicians and Surgeons and the Taub Institute for Research on Alzheimer’s Disease and the Aging Brain. He co-led the new study.[1]

Dr. Arancio said research on irisin “may help explain why physical activity improves memory.” It may also point to why exercise “seems to play a protective role in brain disorders such as Alzheimer’s disease.”[2]

The study was done in three parts:

  1. Scientists first examined tissue samples from brain banks. They found that levels of irisin in the hippocampus are lower in people with Alzheimer’s.
  2. The team then determined what irisin does to the brain. Experiments with mice showed that the hormone protects nerve connections and memory. When the scientists disabled irisin, brain synapses and memory suffered. When they boosted irisin levels, brain health markers improved.
  3. Lastly, the researchers analyzed how exercise affects irisin and the brain. They injected beta-amyloid into mice. Beta-amyloid is a protein that interferes with neurons and causes Alzheimer’s. They had the mice exercise by swimming almost every day for five weeks. Despite having the brain-damaging protein, the mice did not develop memory impairment.

When they gave the mice a drug that blocked irisin, the rodents no longer gained any brain benefit from exercise.

“I would certainly encourage everyone to exercise, to promote brain function and overall health,” said Dr. Arancio.

3 Ways to Boost Your Irisin Levels

There is not yet an irisin supplement on the market, although scientists are working on it. But there are other ways to increase your levels of this important hormone…[3] [4]

1. Do high-intensity interval training (HIIT). Research shows that this type of exercise does the best job of boosting irisin.

The basic formula for HIIT is simple. Just warm up for three to five minutes, doing whatever form of cardio you like best…jogging, swimming, biking, etc. Then go hard at an all-out pace for the next 30 to 60 seconds. Then slow down for a minute or two to catch your breath. Repeat this process five to seven times. Then cool down for at least two minutes. It only takes about 15 minutes total.

2. Eat a high-fat diet. A 2016 study published in the journal Scientific Reports found that a high-fat diet increases irisin levels. To discover the other benefits of a high-fat diet, go here.

3. Don’t avoid the cold. Research has found that shivering due to being cold raises irisin almost as much as exercise does. You don’t have freeze yourself. But simply spending a few minutes under a cold shower or swimming in cool water can increase your levels.

Editor’s Note: If you’re worried about Alzheimer’s, there’s something else you should know… It’s NEVER too late to build a strong brain. That’s why Dr. Nussbaum created his unique Ageless Brain Kit.

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[1]https://www.ncbi.nlm.nih.gov/pubmed/?term=10.1038%2Fs41591-018-0275-4.

[2]https://www.eurekalert.org/pub_releases/2019-02/cuim-hem020819.php

[3]https://easyhealthoptions.com/3-ways-boost-bodys-fat-crushing-hormone/

[4] https://www.psychologytoday.com/us/blog/the-athletes-way/201402/irisin-the-exercise-hormone-has-powerful-health-benefits

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