If you’re looking to improve your brain’s health, Korean university research is showing after dinner you should pass on chewing gum and start gnawing on your toothpick. Researchers at Kyungpook National University have found in a published study that the act of chewing increases blood flow and influences brain activity, along with finding that chewing wood could specifically improve your memory.
Previous studies concluded that chewing helped the brain given that it increases blood flow, allowing the brain to get more oxygen and nutrients quicker to help it function. However, the brain over time suffers through oxidative stress from reactive oxygen species, harmful molecules that damage brain cells. One way the brain protects itself from this stress is releasing antioxidants, which includes glutathione. Glutathione neutralizes these reactive oxygen species.
Chewing helps blood flow to the brain. Photo credit: Canva
The purpose of the research was to see if there was any difference in glutathione release levels during chewing and, if so, if there was any difference in what was being chewed. After various tests of cognitive function and glutathione measurement in 52 university students, half of which chewed gum for five minute spans and half of which chewed popsicle sticks for the same amount of time, the results were astonishing.
When it came to gum chewers, there didn’t seem to be any changes in glutathione levels and memory performance. However, those who chomped on popsicle sticks saw an increase in brain antioxidant levels, especially glutathione, and got higher scores on immediate memory and story memory tests.
While that’s some promising evidence, that doesn’t mean you should break out a 2×4 to nibble on for your next study session. Further research is needed since the testing group was limited to healthy 20-somethings and not a wide range of ages and certain health conditions. There would also need to be monitoring and testing of other sections of the brain, and testing with longer and shorter periods of chewing to confirm these findings.
But what are some proven ways to improve your memory while further tests on wood-chewing are done? Well, according to the Mayo Clinic and Harvard, the typical solutions are the standards: healthy diet, regular exercise, and quality sleep each night. Foods that happen to be good for the heart such as oily fish, leafy green vegetables, and nuts happen to be good for the memory, given that they promote more blood flow throughout the body including the brain. Same with cardiovascular exercise.
However, other methods to help keep your brain’s memory exercised include playing board games, doing puzzles, and playing word games, too. Go out of your way to play with or against other people, as being socially active further helps a person’s memory. There are also benefits to the memory if a person manages their stress levels and participates in regular meditation.While chewing gum doesn’t help improve your memory, there can be some other benefits. Chewing sugar-free gum is recommended by some dentists to strengthen your jaw muscles and teeth, along with cleaning your mouth. However, chewing gum as a TikTok fitness trend to get a squarer jawline has been frequently debunked, so there is no benefit to chewing extra-hard gum. In fact, you could injure your jaw and your teeth if you’re not careful.
The urban monkeys in New Delhi are so bold they’ll steal the lunch right off your plate. If you’ve spent time in New York, you’ve probably seen squirrels try to do the same. Sydney’s white ibises got the nickname “bin chickens” for stealing trash and sandwiches.
This brazen behavior isn’t normal for most species in the countryside, yet it shows up in urban wildlife, and not just in these cities.
Studies show that animals living in urban environments around the world exhibit common sets of behaviors. At the same time, these urban animals are losing traits they would need in the wild. This process of urban animals’ behavior becoming more similar is known as “behavioral homogenization,” and it accompanies the loss of species diversity with urbanization.
Squirrels in New York’s Central Park have no qualms about rifling through your belongings and stealing your food. Keystone/Getty Images
Cities, despite their local differences, share many of the same features worldwide: They are warmer than the surrounding countryside, noisy, polluted by light and, most importantly, dominated by people.
Cities drive evolution as well. Humans and the changes we’ve brought to cities have led to the survival of bolder animals, and those bolder animals pass on their traits to future generations. In genetics, scientists refer to this as the environment “selecting” for those traits.
It’s not just sandwich-stealing that is more common among city wildlife; urban birds also sound more alike.
Why? Cities are loud and filled with traffic noise, so those who can effectively communicate in that environment are more likely to survive and pass on those traits.
Animals may behave similarly in cities because they learn from each other how to exploit novel human food sources. For instance, the cockatoos in Sydney have learned to open trash bins. In Toronto, the raccoons are in a race to outwit humans as urban wildlife managers try to design animal-proof trash bins.
The buildings and bridges in cities become home to bats, birds, and other urban dwellers, at the cost of learning to use more natural nesting sites. Roads and culverts modify how and where animals move.
While rural animals may forage at a variety of places and eat a variety of foods, urban animals may concentrate on garbage bins or rubbish dumps where they know they can find food, but they end up eating a potentially unhealthy diet.
Consequences of similar behaviors
The loss of behavioral diversity is happening everywhere that humans increase their footprint on nature. This is worrisome on several levels.
At the population level, behavioral variation may reflect genetic variation. Genetic variation gives species the ability to respond to future environmental change. For example, for animals that have evolved to breed at a specific time of the year, urban heat islands can select for earlier breeding.
Reducing genetic variation leaves populations less able to respond to future changes. In that sense, having genetic variation resembles a diversified investment portfolio: Spreading risk across a variety of stocks and bonds lowers the risk that a single shock will wipe out everything.
Moreover, as animals become tamer, new conflicts between animals and humans may emerge. For instance, there may be more car crashes, animal bites, property damage and zoonotic disease transmission. Such conflicts cost money and may harm both the animals and humans.
Losing behavioral diversity is also troubling for conservation.
When a species loses behavioral diversity, it loses resilience against future environmental change in the wild, making reintroducing urban animals to the wild harder.
Losing behavioral diversity also risks erasing socially learned, population-specific behaviors, such as local migration routes, foraging techniques, tool-use traditions or vocal dialects.
For example, Australia’s regent honeyeater populations have been shrinking and are critically endangered. The isolation of having fewer of their own species around has disrupted normal song-learning behavior, making it harder for male birds to sing attractive songs that help them find mates and breed successfully.
Ultimately, behavioral homogenization is making wildlife in cities such as Los Angeles, Lima, Lagos and Lahore behave in similar ways despite living in different environments and having different evolutionary histories.
Many of these behaviors influence survival and reproduction, so understanding this form of diversity loss is important for successful wildlife conservation, as well as future urban planning.
Since 2015, the Comedy Wildlife Photography Awards, created by photographers and conservationists Paul Joynson-Hicks and Tom Sullam, have been delivering laugh-out-loud moments through the lens of nature. With a mission to entertain while raising awareness about wildlife conservation, the competition celebrates the charming and comical side of the animal kingdom.
Let’s take a joyful stroll down memory lane with some of the most funniest entries from the 2019 contest (and if you’re feeling inspired, you’ll also learn how to submit your own wild and witty shots for future competitions).
OVERALL WINNER, CREATURES OF THE LAND WINNER: “Grab Life By the…”
You don’t think about how hard it would be to be the parent of a small, curious creature with massive, sharp claws. Let’s all take a moment to be grateful that even though it’s very hard to have a human baby, they don’t have super sharp claws. That would make things ten times worse.
CREATURES IN THE AIR WINNER: “Family Disagreement”
I think if I were an otter, I too would constantly clutch my face in disbelief. “I can’t possibly be this cute, can I? Cute nose, fuzzy head, tiny little eyes? That can’t be! Oh, but it is! I really am this adorable! I am! I am!”
Have you seen those videos of foxes diving headfirst into the snow to catch prey? It’s hilarious and fascinating, and I think this fox forgot that there was no snow. His friend is really trying to help him not hurt himself, but his buddy insists on being dumb. Oh, foxes!
“And then Carol was like, ‘You otter come over for dinner sometime!’ Get it? Get it? Man, Carol’s hilarious. So I went over for dinner and she had like, this whole seafood spread. Crabs, clams, mussels…the whole shebang. Anyway, I think I’m going to marry her.”
Just think about how much poise it took for this photographer to take this photo. Not only is the shark sneaking up on this poor fish, but there’s a person behind that camera! Presumably, the photographer escaped unscathed, since he was able to enter this photo in the contest.
It’s clearly not just human women who have to put up with the incessant nagging conversation from dudes we have no interest in talking to. See the look on that bird’s face? Staring straight out just willing him to go away? Tell me you haven’t made that face. Yeah, that’s what I thought.
“O Romeo, Romeo, wherefore art thou, Romeo?” No one really knows this, but squirrels are generally huge Shakespeare fans. They saw him put up a play in Europe centuries ago and have just carried that love for his words through generations and generations of squirrels.
I relate to this bear hard. Anyone who has had to get up and go to work after a long weekend knows this feeling. Sometimes, you just don’t want to deal with anything. Sometimes, you just want to lie on the ground, cover your face with your hands, and nap for a little while longer.
I love this photo so much. Because not only is it a picture of a penguin farting, but it’s a picture of a penguin who is clearly trying to hide the fact that he’s farting and play it off like he’s doing absolutely nothing. He’s just standing there twiddling his wings. He has no idea what that big bubble under his butt is.
There seems to be a whole genre of “Small rodents holding flowers” photos, and I am a sucker for every single one of them. I’m pretty sure this comes up when you look up “cute” in the dictionary. It’s just so pure.
“Hi there! Welcome to my flower. So glad you could make it! It’s a little cold and wet right now, but once the sun comes up we’ll be in business. Help yourself to a dewdrop. They’re especially fresh this morning.”
“And then my friend Steve, the otter, told me that Carol said to him, ‘You otter come over for dinner!’ Get it? Get it? Because they’re otters! So it’s funny. Hey, where’d you go?”
These poor monkeys were just trying to get it on. Their kids were finally out of the tree, they had some peace and quiet, and then they were so rudely interrupted by a photographer. Although mom looks like she was kinda zoning out anyway.
This little chimp is living the life! He’s got it all figured out, and from the looks of him, he’s still a tiny baby. He’s just looking out at the jungle, thinking about all that milk he’s going to drink later.
I bet that when you’re a Snowy Owl and it finally snows, you are just so ecstatically happy. I mean, it’s right there in your name. Look at her face! It’s full of such pure joy.
Like this little monkey, I, too, usually save my existential crises for bath time. There’s something about the weightlessness of floating in the water that makes you question everything you know to be true about yourself and the world.
Who’s calling this snapping turtle slow? He’s just “taking his time.” On another note, I think turtles are probably the most prehistoric-looking creatures that still exist. If you really take the time to look at them, they’re so crazy.
Imagine playing hide and seek on a block of ice as a polar bear. On one hand, there aren’t too many places to hide. On the other hand, you’re looking for white on white, and that’s not easy.
I don’t know if you knew this, but rodents love ABBA. Here is one getting down to “Dancing Queen.” Because they’re so small, they really feel the music down to their bones. Raise your hand if you would watch an all-rodent adaptation of Mamma Mia! Yeah, me too.
If you want to enter next year’s competition, follow the link here to sign up for mailing list updates!
This article originally appeared six years ago. It has been updated.
A common saying among pet owners is that the hardest thing about loving a dog is saying goodbye. Having a senior dog, especially one raised from a puppy, can be difficult not just because of the inevitable, but also because the pet may be going through age-related ailments or disease before crossing over. It’s a hard thing to experience anyway, but especially when you remember how they were in their prime. Well, veterinary scientists are testing a daily pill that extends a dog’s lifespan while also maintaining their quality of life.
Loyal, a biotech company based in San Francisco, has been trying to develop anti-aging drugs for dogs ever since it was founded. After years of research and testing, they have developed LOY-002, a beef-flavored daily prescription pill for senior dogs aged 10 and older that weigh over 14 pounds. Early testing shows that the pill can add years to a dog’s life, especially larger breeds.
What does this dog lifespan pill do?
The pill interacts and manipulates IGF-1 (Insulin-Like Growth Factor 1), a hormone that’s key to a dog’s cellular growth and metabolism. IGF-1 helps a dog grow in both size and calorie consumption. This hormone helps make young puppies become strong adult dogs. However, it also continues and accelerates aging at a cellular level when a dog is fully grown.
This explains why many larger breeds of dogs tend to live shorter lives than smaller ones. Their IGF-1 levels are higher. It moves them faster towards age-related diseases and discomfort than smaller dogs.
By reducing the excessive IGF-1, LOY-002 reduces the speed of a larger dog’s biological clock. It doesn’t just make them “feel” younger. Slowing everything down adds years to their life and curbs the risk of age-related organ dysfunction, disease, and early death. After thorough testing, LOY-002 cleared two out of the three sections of acceptance before being fully vetted by the Food and Drug Administration.
“Since founding Loyal six years ago, my goal has always been to get the first drug FDA approved for lifespan extension. This safety acceptance brings us very close to achieving that vision,” said Loyal Founder and CEO Celine Halioua. “We are well on our way to bringing the first dog longevity drugs to market.”
How can a senior dog live longer?
Should Loyal receive that final approval, the LOY-002 drug should go to market before the end of 2026. However, veterinarians and dog care experts have some tips on how to help your older dog live longer and healthier.
Visit your dog’s veterinarian often for checkups and keep them notified of any changes in their behavior. They may recommend a specific diet for your dog at their advanced age. Similar to humans, older dogs are encouraged to follow a healthy diet. They should exercise regularly (through walks or playtime) to keep a healthy weight and keep joints strong.
If your dog has joint trouble, your vet may recommend some supplements to help the dog’s mobility and comfort. No matter the issue, it is best to consult with a veterinarian before making lifestyle changes for your dog.
Such advice can help both you and your dog live full lives together. It may also add a few more years of furry companionship along the way, too.
