Don't wait for disease. Strengthen your immune system now.

Prevention is always better than waiting .

Don't wait for disease. Strengthen your immune system now.

A sports coach wearing a protective mask gives a fitness training session on March 12, 2020 in Paris, France.

Photo by Chesnot/Getty Images
  • The focus on stopping the immediate spread of the coronavirus should remind us about the importance of always maintaining a healthy immune system.
  • The most at-risk population are those with immunodeficiencies and respiratory problems.
  • Eating a diet high in fruits and vegetables, exercising regularly, and not smoking keep your immune system strong.

Wash your hands. Don't touch your face. Maintain a distance of at least six feet.

Wash your hands. Don't touch your face. Maintain a distance of at least six feet.

Wash your hands. Don't touch your face. Maintain a distance of at least six feet.

You might have seen these instructions here or there (or everywhere) lately. They're certainly important at this moment in time. Immediate actions must be taken; your best protection is prevention.

But there's a larger issue at play. Humans are reactionary animals. Americans seem particularly primed to react rather than foresee. We tend to respond only when necessary. As we're finding out, kicking the can down the road in regards to our health is not the wisest decision.

There is plenty of discussion about the dangers of COVID-19 on people with immunodeficiencies. The conversation also needs to focus on maintaining a healthy immune system so that when disasters strike, you're as prepared as possible to withstand the ravages of disease.

Your entire body is effectively your immune system. Specifically, the parts that play a role include your lymphatic vessels and lymph nodes, bone marrow, spleen, appendix, adenoid, thymus, and Peyer's patches (gut-associated lymphoid tissue). While geographically widespread, this team unites for a single purpose: to protect you against disease.

As you age, your immune system weakens. This is why cancers are more prevalent in older populations and infections that you shrugged off earlier in life can end up taking your life. Recovery periods from seemingly minor insults are extended. As it stands, respiratory infections, pneumonia, and influenza are among the top causes of death in seniors over age 65 around the world. This makes COVID-19 especially dangerous to older populations.

Maintaining a healthy immune system should be important to all of us at every age. At some point, you and I and everyone will experience the final insult that leads to death. Living a healthy lifestyle means you are not only increasing your chances for living longer, but you'll also live better at every step. Below are eight methods for keeping your immune system strong.

3 Immunity Boosters You Should Know About


You've heard it a million times, but let's repeat it again: regular movement is one of the most important factors for keeping your immune system in top shape. Exercise alleviates mental health issues, helps lift depression, and reduces the effects of anxiety disorder—all cognitive issues that add stress to our lives, and chronic stress destroys immune systems.

On the physical side, humans were born to move. Denying yourself this birthright proves detrimental to fighting disease. Load your body, engage in cardiovascular activity, stretch—just get moving. The most important aspect of exercise on your immune system appears to be increased circulation, so even regular walking is a boon. Ideally, you push your heart rate up regularly and load your body at least three times per week.

Eat well, especially fruits and vegetables

While movement is essential, nothing affects your immune system more than your diet. Those who live in poverty or are malnourished (or both) are more susceptible to infectious diseases than other populations. Regardless of economic status, your risk for immunodeficiencies increases if your diet is high in sugars and carbohydrates.

Those lacking vitamins such as zinc, iron, folic acid, copper, selenium, and vitamins A, B6, C, and E might also experience immune problems. The answer is simple: eat a lot of plants and fruits and lower your intake of processed and sugary foods. Make sure dessert is what it was intended to be: an occasional treat. Stop eating dessert for breakfast.

Watch your weight

In December, it was reported that half of Americans will be obese in 10 years if interventions are not put into place. Even more alarmingly, a quarter of Americans will be severely obese—over 100 pounds overweight. An animal that, for 350,000 years, has survived thanks to nutritional scarcity has fallen victim to caloric excess. The negative health effects of obesity cannot be overstated. Trouble fighting disease is only one of the many consequences of not maintaining a healthy body weight.

Minimize stress

Anxiety levels are skyrocketing. Most people have not been infected by this coronavirus nor will fall seriously ill due to it, yet fear and panic are overriding our calmer instincts. Added stress increases the likelihood you'll experience more dire effects if you are infected; chronic stress is more detrimental to overall health than the occasional stressor.

Numerous anxiety reduction techniques exist—parasympathetic breathing techniques, meditation, listening to music, conversing with friends, and many others. We need a mass cognitive reframing right now. Though the worst is probably ahead of us, this epidemic too will pass. Keeping this in mind is important as you navigate this new terrain.

Greek Lentil and Spinach Soup With Lemon.

Tom McCorkle for The Washington Post via Getty Images; food styling by Lisa Cherkasky for The Washington Post via Getty Images

Drink in moderation

Alcohol stunts the immune response. While a little bit might prove relaxing, moderation is key. Drinking daily or getting drunk to distract yourself from the virus (or anything else) increases the likelihood that your body will be incapable of fighting off the disease if you become infected. Be smart about your drinking and try not to use it as a coping mechanism.


Sleep deprivation reduces your body's ability to produce essential proteins that keep your body healthy. Still, the National Sleep Foundation estimates that 47 million Americans don't get enough shuteye. It is estimated that 70 million Americans suffer from a sleep disorder. Chronic lack of sleep leads to both mental and physical health problems, including a compromised immune system. In fact, the number one remedy for most illnesses is sleep (along with hydration). Basic, of course, but basics are essential.

Avoid infection

The best way to not get sick is to avoid situations in which you can get sick. Wash your hands. Don't touch your face. Maintain a distance of at least six feet. This is always good advice, but critical now.

Throw out the cigarettes

Cigarette smokers are especially susceptible to COVID-19 given that it's a respiratory disease. We've known about the deadly consequences of smoking for a century, even though it took public health officials some time to catch on. In the long run, nothing good comes from it. Don't wait for another epidemic to kick this habit.


Stay in touch with Derek on Twitter and Facebook. His next book is "Hero's Dose: The Case For Psychedelics in Ritual and Therapy."

This is what aliens would 'hear' if they flew by Earth

A Mercury-bound spacecraft's noisy flyby of our home planet.

Image source: sdecoret on Shutterstock/ESA/Big Think
Surprising Science
  • There is no sound in space, but if there was, this is what it might sound like passing by Earth.
  • A spacecraft bound for Mercury recorded data while swinging around our planet, and that data was converted into sound.
  • Yes, in space no one can hear you scream, but this is still some chill stuff.

First off, let's be clear what we mean by "hear" here. (Here, here!)

Sound, as we know it, requires air. What our ears capture is actually oscillating waves of fluctuating air pressure. Cilia, fibers in our ears, respond to these fluctuations by firing off corresponding clusters of tones at different pitches to our brains. This is what we perceive as sound.

All of which is to say, sound requires air, and space is notoriously void of that. So, in terms of human-perceivable sound, it's silent out there. Nonetheless, there can be cyclical events in space — such as oscillating values in streams of captured data — that can be mapped to pitches, and thus made audible.


Image source: European Space Agency

The European Space Agency's BepiColombo spacecraft took off from Kourou, French Guyana on October 20, 2019, on its way to Mercury. To reduce its speed for the proper trajectory to Mercury, BepiColombo executed a "gravity-assist flyby," slinging itself around the Earth before leaving home. Over the course of its 34-minute flyby, its two data recorders captured five data sets that Italy's National Institute for Astrophysics (INAF) enhanced and converted into sound waves.

Into and out of Earth's shadow

In April, BepiColombo began its closest approach to Earth, ranging from 256,393 kilometers (159,315 miles) to 129,488 kilometers (80,460 miles) away. The audio above starts as BepiColombo begins to sneak into the Earth's shadow facing away from the sun.

The data was captured by BepiColombo's Italian Spring Accelerometer (ISA) instrument. Says Carmelo Magnafico of the ISA team, "When the spacecraft enters the shadow and the force of the Sun disappears, we can hear a slight vibration. The solar panels, previously flexed by the Sun, then find a new balance. Upon exiting the shadow, we can hear the effect again."

In addition to making for some cool sounds, the phenomenon allowed the ISA team to confirm just how sensitive their instrument is. "This is an extraordinary situation," says Carmelo. "Since we started the cruise, we have only been in direct sunshine, so we did not have the possibility to check effectively whether our instrument is measuring the variations of the force of the sunlight."

When the craft arrives at Mercury, the ISA will be tasked with studying the planets gravity.

Magentosphere melody

The second clip is derived from data captured by BepiColombo's MPO-MAG magnetometer, AKA MERMAG, as the craft traveled through Earth's magnetosphere, the area surrounding the planet that's determined by the its magnetic field.

BepiColombo eventually entered the hellish mangentosheath, the region battered by cosmic plasma from the sun before the craft passed into the relatively peaceful magentopause that marks the transition between the magnetosphere and Earth's own magnetic field.

MERMAG will map Mercury's magnetosphere, as well as the magnetic state of the planet's interior. As a secondary objective, it will assess the interaction of the solar wind, Mercury's magnetic field, and the planet, analyzing the dynamics of the magnetosphere and its interaction with Mercury.

Recording session over, BepiColombo is now slipping through space silently with its arrival at Mercury planned for 2025.

Study helps explain why motivation to learn declines with age

Research suggests that aging affects a brain circuit critical for learning and decision-making.

Photo by Reinhart Julian on Unsplash
Mind & Brain

As people age, they often lose their motivation to learn new things or engage in everyday activities. In a study of mice, MIT neuroscientists have now identified a brain circuit that is critical for maintaining this kind of motivation.

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Scientists discover why fish evolved limbs and left water

Researchers find a key clue to the evolution of bony fish and tetrapods.

Surprising Science
  • A new study says solar and lunar tide impacts led to the evolution of bony fish and tetrapods.
  • The scientists show that tides created tidal pools, stranding fish and forcing them to get out of the water.
  • The researchers ran computer simulations to get their results.
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Optimism may be dangerous in a pandemic, say behavioral psychologists

Most people believe themselves to be less at risk from COVID-19 than others similar to them, according to a recent UCL survey conducted in the U.S.

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