25. We Have Reduced Ability to Feel Pleasure

Anhedonia refers to a reduced ability, or even inability, to experience pleasure. It is because of the same reason why people who begin using drugs need higher and higher doses to get the same effect. Tolerance is the brain’s ability to become used to new input and stimuli, whether drugs or new hobbies. The initial rush of joy you get will likely diminish over time as the chemicals produced by your brain adjust and level out regarding the new experience. Much as with drugs, overdoing a pleasure providing behavior can also cause tolerance and reduce the ability to feel much at all.

Spending much of our free time online – whether we are doing online shopping (mostly as retail therapy), checking email, or updating our social media to get new “likes,” comments, and shares – is hijacking our brains in the same way that drug addiction hijacks an addict’s brain. We need higher and higher doses of stimulation to get the same feeling of pleasure. The dopamine provided by a similar level of positive online feedback will naturally adjust and lower over time, necessitating more and more shopping, posting, commenting, scrolling, etc., to get the same level of excitement, fulfillment, and joy.

24. Children Are Developing Myopia

Myopia, the scientific term for near-sightedness, used to be something rarely seen outside of those who are in their fifth decade of life or higher. Being able to see clearly was a necessary survival skill until very recently. Imagine pioneers roaming the prairies when they cannot see a wild herd of buffalo in the distance! Now that children are spending so much time in front of screens, especially while their eyes are still developing, they develop myopia earlier and earlier in life. Most of the light they see is artificial rather than natural light, gained from spending time outdoors.

More kids need prescription lenses, even when they are not genetically predisposed to vision problems. In fact, in Seoul, South Korea, 96% of 19-year-old males have myopia. In China two decades ago, only about 10% of children were myopic. Now, that number is closer to 90%. The ability to easily treat near-sightedness enhances this issue, as near-sightedness in earlier eras would have been disastrous and dangerous, making it far less likely the genes would be passed on. Today, no one would ever consider someone at risk or unfit in life due to having to wear glasses as they are nearly ubiquitous.

23. Children Are Developing Type 2 Diabetes

Just a few decades ago, type two diabetes was limited to those who are elderly. Type one diabetes, also known as juvenile diabetes, was the only time doctors would see in children. However, with the high amount of processed foods – especially those high in sugar, that children are eating – coupled with the amount of time they are spending online rather than outside playing, children younger than eight years old are being diagnosed with type two diabetes. We have yet to see how this health crisis will affect the genome, especially since Diabetes does appear to run in families.

Given the expense of treating diabetes and the horrible complications it can lead to, including blindness and loss of limbs, the idea of generations facing a high rate of Type 2 Diabetes is genuinely worrisome. The medical community will have to grapple with providing a huge amount of intensive healthcare to future generations if high diabetes rates continue. It could lead to a reduction in life expectancy and the overall quality of life for those affected. Understanding the increase in Type 2 Diabetes is doubtless a top priority for medical researchers to avert the coming crisis.

22. We Are Sleeping Less

Back in the 1980s and 1990s, not getting enough sleep meant that you were tough. If you were tired when you went into the office, you could wear your exhaustion as a badge of honor, especially if you could still manage to power through your workday. Getting a bad night’s sleep was remarkable enough to be a topic of discussion and would garner commiseration and pity from your coworkers and friends. Insomnia was still a somewhat uncommon medical condition that would command your doctor’s attention. Bedrooms were set up in a way conducive to sleeping, with minimal light pollution or notification sounds.

Now, we are so busy, and our lives are so consumed by technology, that being sleep-deprived is a normal state for most people. The number of people getting a full seven to eight hours of sleep a night regularly is relatively low. As a result, we are increasingly distracted, less focused, and less aware of what is going on. Long-term sleep deprivation can create many adverse health effects, including weight gain, lowered mood, loss of ability to focus, and more. Most Americans are now at risk of these health effects. Why? Because of the average of 5-6 hours of sleep that many are getting.

21. Smartphones Are Giving Us Insomnia

If you take your smartphone to bed, there is a good chance that you are one of the many adults that are struggling with insomnia. You may go to bed exhausted, but if your smartphone is on your nightstand or right beside your pillow, you may struggle to fall asleep. The reason is that your brain needs to calm down for you to fall asleep. However, if you keep checking your smartphone every few minutes, you will miss the state of relaxation necessary for deep sleep. You will develop insomnia and become increasingly distracted, irritable, and tired.

The light and sound pollution from the blinking notification lights and alarms also contributes to insomnia and is the same reason televisions are not recommended in the bedroom. The amount of stimulation that phones provide is not remotely conducive to a calm, full night’s sleep. Add to that the constant, chemically reinforced temptation to check your phone for social media notifications, news alerts, or even just to check the time, and you have a recipe for a night of tossing and turning. The distractions created by a smartphone next to your bed or under your pillow could also prevent valuable deep sleep.

20. We Have Less Melatonin Because of Our Smartphones

Our smartphones don’t just make us increasingly distracted and, well, dumber. Smartphones and other gadgets with screens emit blue light, which the brain mistakes for daylight. If you check your smartphone or use your computer in the evening, you trick your brain into thinking that it is still daylight and that it needs to stay awake and alert. As a result, your brain doesn’t secrete as much melatonin as it should. After all, it is trying to stay awake, not fall asleep. With decreased melatonin, you aren’t just sleeping less. You are disrupting your entire hormonal chemistry and body’s metabolism.

This effect has led to a proliferation of gadgets to block blue light, like yellow polarized glasses lenses, to help people restore healthy circadian rhythms. Many smartphones and other devices now also include helpful nighttime modes. These reduce or eliminate blue light, allowing the body to ease into a natural state of sleepiness. If you currently struggle with not feeling tired at bedtime, checking your devices for a nighttime mode could be an easy way to make a healthy change. While circadian rhythms and sleeping norms have changed throughout the ages, experts agree that our current cycle is not working.

19. We Are Becoming More Codependent

Codependency is a severe problem. It’s more than relying on other people in difficult times – it’s losing your personality because you rely on someone else to solve all of your problems. Imagine a hunter-gatherer not getting up to go forage because he is waiting for someone else to tell him what to do. That’s what’s happening to people today, thanks to cell phones and social media. They’re refusing to live their lives on their own terms because they are waiting for other people to permit them. People are codependent on social media and will not do anything that they cannot post in exchange for “likes.”

However, on a less extreme level, consider how many times a day, teenagers call their parents to update them on every little thing. Two decades ago, we would find it problematic if anyone called their parents that often. But now, it’s the norm and has even caused the rise of a new form of parenting called “helicopter parenting.” As a result, they have codependent relationships with their parents. However, they are unable to separate from them. The ability to be in constant contact with other people dramatically increases the risk of forming unhealthy codependent relationships. This notion is for friendships, romantic relationships, and more.

18. We Don’t Know How to Be Alone and Quiet

Being quiet and alone is a necessary skill that humans developed long ago. Imagine your hunter-gatherer ancestors waiting quietly for hours at a time while stalking out prey. Imagine doing that now, without any smartphones or distractions, just waiting quietly. In addition to hunting games, being quiet and alone improves the brain’s chemistry so that it enhances intimacy and human connection. We are missing out on those things thanks to the constant presence of social media and online personas. Absence indeed makes the heart grow fonder, and the brain’s chemistry to boot.

With so many distractions around us nowadays, we have largely lost the ability that allowed our ancestors to survive for tens of thousands of years. In particular, kids don’t have any alone time, which could be short-circuiting their intellectual and social development. When people aren’t connected, they feel lonely. In older times, children sat alone to read, play quietly, draw, or engage in other activities that require imagination. While children today have more access to their peers thanks to social media, it may be at the cost of forgetting how to be comfortable with being alone.

17. We Are More Fatigued

Getting enough rest has long been critical to the survival of humanity. Nowadays, we aren’t just not getting enough sleep. We are experiencing higher levels of fatigue. Why? Not only because of less sleep but also because we spend more time in front of screens instead of outside. The combination of disturbed sleep thanks to all of our various smart devices and the disruption of our circadian rhythm from blue light exposure creates a disastrous wave of insomnia and fatigue for the vast majority of adults and many children. Such reduced sleep has many associated and long-term health risks.

When we spend time in front of screens, our brains feel drained and unable to cope with life tasks. However, when we spend time outside with people, we feel satisfied with life and rest without the distractions of smartphones. Since we have exchanged time outside for screen time, we are increasingly fatigued. Physical insomnia, once a reasonably unusual medication condition, is also plaguing most people. Whether it be from stress, constant blue light exposure, or the temptation to keep checking their phone for a dopamine hit, people are fatigued at unprecedented levels, despite physical labor being less performed than at any time in history.

16. We Don’t Hear As Well

Being able to hear things in the distance has long been a necessary skill for survival. Now, however, many people are developing hearing loss and the reason why isn’t old age. While we expect seniors to grow age-related hearing loss, it’s happening in younger and younger people. The reason why is how many people continuously have headphones in. They aren’t just unaccustomed to silence; they are continually blaring music into their ears and damaging their hearing. Kids at increasingly younger ages are experiencing hearing loss because of their headphones and using them dangerously.

The types of sounds people are now exposed to are also vastly different than in past eras, where the sound of a jackhammer or jet engine would have been monstrous and unimaginable. Today you can easily listen to bass lower than people would have ever heart in nature, as well as treble that pierces more than a baby’s cry. While we have a wealth and diversity of sound today, many of them can permanently damage our hearing if misused. Unfortunately, few devices made today come with safety measures that keep you from listening to dangerous levels of sounds.

15. We Have Muscle Aches

A generation ago, you probably had sore muscles from a hard workout, like an intense PE period at school. However, now, the amount of time we spend on technology is forcing our bodies into awkward positions for so long that we have more aches and pains. Posture and repetitive motion injuries, often associated with desk work, are prevalent sources of expensive workplace injuries. Carpal tunnel, which usually requires surgical treatment, is incredibly common now from bad computer station ergonomics. Back and neck problems are also expected from improper posture over the long eight or more hour workday.

“Texting thumb” refers to people who spend so much time texting that their thumbs are perpetually sore. Furthermore, if you spend a lot of time on the computer, you are more likely to have a sore back. The problem extends beyond basic aches and pains – you are changing your musculoskeletal structure, which could set you up for more significant problems later in life. Spending too much time hunched over your phone can even cause permanent growths and deformations to your neck and spine. While we are spared many of the severe workplace injuries of earlier eras, a sedentary life has its own dangers.

14. Our Hearts Are Weaker

Our sedentary lifestyles have caused our hearts to become significantly weaker than those of our forebears. Women who spend six hours or more sitting down in front of a computer are nearly 40% more likely to experience premature death. This notion is true even if they regularly work out at a gym and maintain a healthy weight. The heart cannot deal with hours spent at meager rates of activity. Furthermore, this is accurate since we’re a species that evolved running and hunting. Unfortunately, the sloth would have been a better ancestral relative for many of us today with busy yet incredibly sedentary lives that contain almost no physical exertion.

The reason is that even with occasional workouts, our lifestyles are so sedentary that our entire bodies, including our hearts, are weaker. Throw in our poor diets, and you have a recipe for chronic health problems and premature death. Our diets are now high in sugar and artificial additives as well as heart-busting chemicals like trans fats. Daily life also looked very different as little as 100 years ago, with the vast majority of people engaging in physical labor for much of the day and taking long walks or horse rides to travel. Exercise was part of life, not a chore or hobby.

13. GMOs Are Causing More Food Allergies

Historically, people who have food allergies had shorter life expectancies. Imagine someone with a peanut allergy before Epi-pens. Should the person go into anaphylactic shock, there would be no way to reverse it. It would have been almost impossible for anyone with a severe food allergy to reach adulthood and pass any genetic risk for food allergies on to their children. There was also far less variety in foods available in eras past, especially for more impoverished people, so having a food allergy to any typical food would have been an absolute death sentence.

However, the biotechnology that has led to genetically modified food has caused more and more people to develop food allergies. In fact, by altering a plant’s genome, bioengineers create new food allergies that did not previously exist. Food allergies have skyrocketed, particularly in the United States, where roughly one in 13 children, or two in an average classroom, will have severe food allergies today. This growth has had a massive impact on classroom activities, school lunch services, and more. School nurses now have to be continuously prepared to administer epinephrine and provide life-saving medical care.

12. We Are Becoming Infertile

A few generations ago, infertile couples were few and far between. Perhaps it just seemed that way, as infertility was something that people didn’t discuss. Nevertheless, nowadays, more people are becoming infertile. The reproduction rate is dropping in many countries around the world. Fewer couples are having children. Also, the people who do reproduce have fewer children. Whether through personal choices or due to infertility, fewer babies are being born in many regions. Furthermore, some countries, like Japan, are falling below the replacement level of population growth. They are hitting a record new low reproductive rate each year.

One reason is that GMOs are causing infertility. Avoiding GMOs in the modern world is incredibly difficult, as even the standards for labeling something as organic have changed. Studies show that over generations, GMOs do decrease fertility. In the United States, people attempt to label genetically modified food products, but such efforts have been met with resistance by the scientific community and food lobbies. Currently, there is no required messaging or labeling for products containing any amount of genetically modified organisms. The fight continues over its impact on health and the environment without any signs of abating.

11. We Are More Sensitive to Gluten

You can blame this one on GMOs, too. Before modern technology led to the rise of genetically modified food, the number of people sensitive to gluten was small. Now, celiac disease and other disorders related to gluten are rapidly on the rise. People with gluten sensitivities have much faster and more complete recoveries when they eliminate GMOs from their diets. The simplest explanation is that modern technology has wreaked havoc on our health. Whether this is due to the loss and change of individual molecules or the use of new pesticides designed to complement GMOs is currently unknown.

Celiac disease means gluten is often the culprit. It causes miserable digestive symptoms for those affected. Furthermore, it can even cause systemic issues such as fatigue and difficulty focusing. Celiac disease’s symptoms are so wide-ranging in the body that they can imitate other syndromes. Some may think it is chronic fatigue and even neurodiversity like ADHD. For some who have celiac disease, their food even being in contact with a wheat product during preparation can be enough to cause severe symptoms. It is a difficult disease to manage; that is especially true depending on the level of sensitivity. Finding the root cause will save millions a great deal of suffering.

10. We’re Living Longer

Many incredible scientific discoveries have combined within modern medicine to make longer lives a reality around the world. Only a little over a century ago, children still routinely died from contagious illnesses like Measles or from infections that couldn’t be treated without the discovery of penicillin. Many mothers and children also used to die in childbirth or shortly after, which dramatically lowers the life expectancy. Vaccines and the discovery of antibiotics have added decades to the human population’s life expectancy, a miracle that would have been unthinkable to people in ages past. Reduced infant mortality has also dramatically increased life expectancy.

Constantly evolving medical procedures are also keeping humans alive longer than ever and through illnesses that would have been a specific death sentence only decades before. For years, doctors could not find cancers, so they would go undetected. Now, they can find cancer the size of a grain of sand. Rare genetic disorders and deadly allergies can be managed. Furthermore, many more life-threatening diseases of bygone eras are now inconveniences at worst. There are threats to these gains through obesity, diabetes, heart disease, racial disparities in infant mortality rates, and suicide. Nevertheless, it’s still an incredible feat of modern science and medicine.

9. Self-Diagnosis Is Increasingly Possible

While it used to be taken as a joke, diagnosing yourself through the internet is becoming increasingly possible. While basic symptom checkers like WebMD have existed for years, increasingly advanced online screening tools are continually becoming available. Telehealth, especially today, is increasingly available and even often offers a more affordable alternative to in-person doctor visits. Support groups on social media also provide a place where experts, patients, and those seeking diagnosis can convene and discuss their conditions. Scientific and medical journal papers are also growing more available through sources like PubMed, allowing for access to cutting edge medical and technical information.

Self-diagnosis has become especially common for disabilities like autism. Testing is costly. Furthermore, testing providers are busy and challenging to find. Also, the disability itself can be hard to diagnose or is often overlooked by medical providers. In a country with critical access issues within healthcare, the validity of self-diagnosis in the absence of access to care is rapidly growing within many health and disability communities. You need to visit your doctor to get prescriptions and some specialized medical treatments. Besides, having a potential label for your issues or suggestions for an eventual doctor visit can be invaluable.

8. Gadgets Can Help Monitor Health

Smart gadgets like our phones and tablets are sources of many health problems. Some examples include eye strain, insomnia, and even spinal and muscular deformations and pain. However, they also offer a unique opportunity to monitor our health which was impossible in previous generations. While they may cause insomnia, devices like the FitBit and others can again watch our sleep and warn us of possible serious issues like sleep apnea. You can also tell if your sleep is disturbed. Thus, you can discover common ways you should alter your potential home or lifestyle issues. People can also track data over time to allow changes to be tested and measured.

There are countless high-tech gadgets available on the physical activity front. They can measure heart rate, blood pressure, miles run, body fat composition, “physical” health age, and more. These devices can monitor and store a wealth of biometric data analyzed at home or shared with a medical professional. These devices have the potential to detect heart issues like arrhythmias and alert medical professionals to underlying conditions. So, insomnia isn’t fun, but there is great potential in using gadgets to aid and monitor our health. Undoubtedly, this area will only expand in the future with ever more powerful devices that can track more factors.

7. You Can Gamify Health

Alongside new devices that can aid and monitor our health on factors ranging from heart rate to REM sleep, there are now countless apps and programs that allow you to make your health fun. There are apps that train you for a marathon by narrating zombies chasing you on your run. Some programs award you achievement points and medals by reaching certain checkpoints of training and endurance. These apps gamify monitoring your health, which helps make dopamine the brain’s reward chemical. By making health rewarding, people are more likely to engage in healthy behaviors and stay on top of their own health.

These apps may play a significant role in helping the human population’s health in the future. Furthermore, parents introduce them in childhood. Gamification is a meaningful way children learn. Moreover, it could instil a lifetime awareness of health that is currently lacking in many school curriculums. As health tracking gadgets improve, many of them will likely begin integrating gamify-ing programs that make monitoring your health. Furthermore, it should be a fun activity instead of a hassle. Does this seem futuristic? Integrated health tracking on smart devices will likely be a standard practice in the future that could help us live longer.

6. New Medical Treatments Are Possible

Cancer may have killed a young man in his prime by being undetectable until the last stage of development can now be routinely detected at sizes like a grain of sand or even smaller. Cutting edge medical treatments are making more and more diseases into mere problems instead of certain death sentences. That allows many people who would have otherwise died prematurely to thrive and potentially reproduce, impacting humanity’s gene pool.

In addition to unpredictable medical events like cancer, some routine illnesses associated with aging are also gaining improved treatment. It could drastically increase the quality of older life and further increase life expectancy. Like ligament tears and broken bones, common injuries often overlooked now as minor inconveniences once would have led to a lifetime of suffering and poverty from a lack of ability to work. Many illnesses we view as serious today may be more treatable in the near future. In turn, it may allow for increased life expectancy. Also, allowing more people to pass on diverse genes.

5. Immune Systems Are Growing Weaker

Compared to a century ago, we live incredibly sterile lives. While most adults, and even many children, worked outside performing physical labor every day, they were exposed to dirt and all sorts of materials that we couldn’t imagine today. Even the primmest Victorian woman would have been exposed to more soil and smog than a typical person today. We live and work in increasingly clean environments. However, people use strong and often anti-microbial cleaners that weren’t available in earlier eras. It affects us due to the lack of exposure to common microbes and our clean environments. Therefore, our immune systems show signs of collectively weakening.

While we have been well protected from many historic diseases thanks to the advent and continual development of vaccines, novel communicable illnesses may be able to run wild thanks to a lack of natural immunity. As more people shift to working from home, combined with the rise of social media as the dominant form of human interaction, people may also lose some beneficial protection from exposure to other people. While the chickenpox parties are a bygone era, there is still value for our immune system in contact with other people. As we lose that, our immune systems may lose something as well.

4. Our Muscles Are Atrophying

It is already well documented that modern humans’ jaws are considerably weaker than our ancient hunt-gatherer ancestors due to our processed diets. We simply don’t need the strength of chewing that our ancestors did. Thus, we lost muscle, and our heads got smaller. Similarly, our muscles are expected to atrophy. Our bodies get overall less toned as we become increasingly sedentary due to the internet, sedentary office jobs, long commutes, and other modern daily life forces. Even with daily exercise, we simply don’t move as much as humans did even a century or two ago.

The Wall-E vision of humans having to fly around on sedan chairs isn’t very likely. However, we may overall become a slightly more Hobbit-like people. We could develop smaller bodies that are prone to a bit of flabbiness. You might not be made for feats of strength. While this may seem grim, the change to our heads and jaws shows that some changes are just a natural response to how we live our lives, and changes to our muscles would be no different. Our diets may also change in response to the reduced need for calories to support less muscle mass.

3. We’re More Lactose Intolerant Than Ever

Lactose intolerance isn’t a serious condition. Apologies to everyone lactose intolerant who’s had a nasty run-in with a cheese pizza. However, this condition did likely have a strong impact on people in past eras when digestive health wasn’t as easy to treat. Supplements like Lactaid were not available to make milk digestive. When food diversity was far lesser than today, the inability to consume valuable calcium, fat and other nutrients in milk products may have been a serious issue. This is especially true in impoverished populations. Babies born with lactose intolerance would have been at particular risk if their mothers couldn’t nurse.

Compare that to today, when not only is lactose intolerance incredibly easy to treat, but there are countless healthy alternatives available to dairy products. People make kinds of milk from the seeds of flowers to ground nuts to oats. They can make cheese and yogurts from soy and almond milk and several other alternatives. Not only is it possible to live with lactose intolerance, but it’s also relatively easy to thrive. It should come as no surprise then that lactose intolerance is proliferating, including in cultures where milk has historically been consumed. The easier it is to find alternatives and treatments for a condition, the more prevalent they could become.

2. Surgeries Are Less Invasive and More Survivable

The invention of laparoscopic technology made a vast array of medical procedures incredibly less invasive and, therefore, less likely to have complications that lead to death. Before may have required cracking the chest open, it can now be handled through the insertion of a small catheter. Surgeries in the abdomen, in particular, have become safer due to the reduced risk of damaging an intestine and causing sepsis. While still risky, brain surgeries have also become safer thanks to the creation of specialized tools that minimize invasiveness. As surgeons themselves become better trained and used to this technology, surgeries continue to evolve safer.

Safer surgery for such a wide range of conditions means that illnesses and congenital disabilities that may have killed people in their youth are now treatable at a much lower risk. More people can survive heart defects, cancers, and more thanks to laparoscopy. Furthermore, they are far less likely ever to develop complications. These people being able to survive thanks to modern medicine will, like many other advances, allow a more diverse crop of genetic material to be passed on to future generations. It also means that we will continue to narrow the list of illnesses that are certain death.

1. Fixing Our Own Genes

The concept of altering our own genes is still incredibly controversial, but it’s on the horizon nonetheless. Scientific missions like the Human Genome Project, overseen by the Human Genome Organization, continue to map the incredible complexity of the human genome, finding more and more genetic causes for a wide range of illnesses and disabilities from ADHD to diabetes. As we discover the role of genetics in more and more diseases, we may someday find a way to treat those diseases before they ever even develop by altering the genes of the person affected. Genetic testing kits are also allowing people unprecedented access to their own genetic information.

If it becomes possible to treat genetic illnesses before they ever develop symptoms, it is entirely possible that genetic conditions will cease to trouble humanity. There are also fears that we may use such science to edit specific genes. Why? To stop their ever expressing or, at the worst, stop certain people from reproducing to wipe genes out entirely. While these procedures and medical guidelines will be the earnest debates of medical ethicists and scientists alike, what is clear is that molecular and genetic medicine has the potential to vastly impact natural selection and health in humans in the not-too-distant future.

Where Did We Find This Stuff? Here Are Our Sources:

“10 Ways Modern Technology Is Destroying Natural Selection,” by Oliver Taylor. Listverse. July 13, 2019.

“The Real Effects of Technology on Your Health.” Everyday Health. November 15, 2017.

“How Do Genetically Modified Foods Affect Your Health?” by Rachel Mount. O Magazine.

“7 Ways GMOs Affect Your Health,” by Alana Marie Burke. Newsmax. February 9, 2015.

“Japan’s birth rate hits another record low” by Emiko Jozuka, Jessie Yeung, Jake Kwon, CNN December 29, 2019.

“The Impact of Technology on the Human Body” by Jet Khasriya. Apetogentleman.com

“Technology’s Effect on Our Health the Good the Bad and the Ugly” by Brandon Swenson University of Arkansas, December 30, 2020

“7 Ways Modern Technology May Be Affecting Human Evolution” by Joe McGauley, Thrillist August 19, 2015