Today’s Solutions: October 23, 2026
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Person getting food at night from the fridge.

Your gut biome may be responsible for your food cravings

Scientists continue to discover more and more processes that the gut microbiome influences. This population of microbes - including bacteria, fungi, viruses, and their genes - naturally live inside animal guts, interacting with the host body and each other to regulate processes. Researchers have Read More...

Doctor attentively examines the MRI scan of the patient.

Woman born without a chunk of her brain shows the power of plasticity

Imagine going to the doctor for a check-up and finding out you are missing a vital part of your brain. This is what happened in 1987 to a woman — referred to as EG— who had no prior knowledge of her condition before this scan. In accounts from EG and those who know her, no unusual behavior Read More...

MRI image of head showing brain.

This atlas maps out the area of the brain associated with substance disorders

As we have reiterated many times at The Optimist Daily, the brain is an extremely complex organ shrouded in mystery. Incredible and interesting breakthroughs are always being made on this front, including how our brains interpret smell, how they communicate with our organs, and the regions involved Read More...

Honey and wooden dipper isolated on white background.

Honey: the sweet solution for brain-like computers

It turns out that honey is much more than just a tasty addition to your tea. Engineers from Washington State University have reimagined the use of the sticky substance in brain-like neuromorphic computers. These systems are designed to mimic the human brain, where biological structures are replaced Read More...

Smell and memories

Composing a smellscape: how your brain interprets scents

Scent is the sense most commonly associated with memory. We all have a great, or a gross, smell that brings us right back to childhood and all the feelings that come with it. How does that happen, though? How does the brain interpret smells and link them to good, bad, or nuanced feelings?  A Read More...

Black headphones on dark wooden background with blue and red light shining.

Is this the age of "digital drugs?"

A lot of us love a change in perspective. Whether that’s an adrenaline surge from risky behavior or someone taking a trip with magic mushrooms to explore their deeper selves, people are always coming up with new ways to shift their state of mind. The latest trend in mind-shifting isn't in taking Read More...

Roasted coffee beans.

Could caffeine be used to treat ADHD?

An estimated 4.4 percent of adults are diagnosed with Attention Deficit Hyperactivity Disorder, or ADHD, a neurological condition where people find it hard to pay attention or control their behavior and experience hyperactivity. Diagnoses of this condition have increased exponentially over the Read More...

Person standing on road wearing white sneakers with arrow markings pointing in different directions, decision making concept.

Scientists discover decision-making brain cells

Our most complex organ, the brain, is a puzzle that scientists are still trying to piece together. Here at The Optimist Daily we like to keep our readers up to date with the latest discoveries on the neurological front, like pinpointing the singing regions of the brain or how zebrafish brains Read More...

Pieces of rainbow colored paper with chemical structure of LSD on, micro dosing concept.

How does LSD help an anxious brain?

Here at The Optimist Daily, we’ve commonly discussed how psychedelics potentially treat mental illnesses. With their power to alter our brains in miraculous ways, researchers are racing to understand their power. Scientists don’t fully understand the human brain itself yet, therefore lots of Read More...

The 3D illustration showing brain and active vagus nerve.

The secrets of body-to-brain communication

There are so many types of communication that occur in our world, some of which you’ve probably never even considered. Having a chat over coffee, fungal networks sending each other signals underground, or even plant-to-farmer communication, there are so many types of relationships that rely on Read More...