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7 Signs You Have an Unhealthy Gut, and What to Do About It

The Elemind headband promises to help you fall asleep faster. This is what happened when I put it to the test for a nap.

Nasha Addarich Martinez Dec. 4, 2025 2:39 a.m. PT
6 min read
Once you notice your gut may be unhealthy, there are several steps you can take to repair it.

Krisanapong Detraphiphat/Getty Images

I am a power nap believer, especially if you need a boost to get through a particularly long day. So when I was offered the opportunity to test the Elemind headband, which is designed to help you fall asleep on demand, I couldn’t pass it up. Taking a nap for work? Yes, please.

Priced at $349 (with an optional monthly subscription fee of $7 or more for accessing your sleep data), the Elemind isn’t cheap. However, it’s loaded with tech, including EEG (electroencephalogram) functionality to read your brainwaves. AI for processing that brain activity and audio output to produce sounds that induce sleep. The latter is a low-pitch, rhythmic buzz you can also feel. The sensation isn’t intrusive or distracting, but rather almost feels like a light massage.

“It’s basically noise-canceling those brain waves that keep you awake,” Meredith Perry, co-founder of Elemind, tells me.

There are numerous Reddit threads about the intrigue surrounding this device. The discussion centers on whether it actually works, with many people recommending it, while others are on the fence about this technology, stating that it may be too early to be a market-ready device. To find the answers, I set out to test it myself.

I’ve been working in the sleep industry for years, and I’ve seen and tested a variety of gadgets and products that claim to help you sleep better. Honestly, I understand the skepticism surrounding a product like this, because not many such devices live up to their promises. Naturally, I was eager to see if the Elemind headband is among the hundreds that don’t work or if it was going to be the breakthrough the space needs.

Here’s what I found.

The Elemind headband.

Nasha Addarich Martinez/CNET

I arrived at The Crosby Street Hotel in New York for my nap. Perry greeted me at the entrance of the room and explained the technology behind Elemind and to show me how to properly put on the headband and turn it on. She also showed me how the app works and the data I can access when wearing the headband. Then she left me to nap.

I’ll briefly describe what happened next because — spoiler — I fell asleep. I remember lying down and hearing a low buzz that resembled bone conduction. I could hear the buzzing, but I could also feel it. At first, the rhythm was fast-paced, but as I started to drift off I felt it getting slower. The next thing I knew, I was waking up to the sound of the room door opening. It was Perry with a big smile because she knew the headband had worked based on my half-opened eyes and the bewildered look on my face.

The nap was pretty short. We set the headband to 25 minutes. This wasn’t my typical nap. Instead of a deep sleep, I felt like I was in an alpha state — like a light sleep where I was still aware of my surroundings.

When I woke up, I felt exactly how I normally feel after a nap, which was a little groggy. That feeling lasted only a few minutes, and I continued my day with no side effects or grogginess.

This is the first sleep tech device I’ve seen that targets brain waves and redirects them in real time. Research affiliated with Elemind claims that 76% of the people who wore the headband fell asleep faster, and it was certainly the case for me.

What the data says

"If you're bloated or you have lots of gas, you may have a disrupted composition and function of the gut microbiome," Cresci said, adding that the only way to know for sure is to have it measured with a microbiome test like a stool sample.

Six other sign of an unhealthy gut may include:s

  • Fatigue
  • Food intolerance
  • Skin irritation or problems
  • Trouble sleeping
  • Vomiting
  • Upset stomach

Research has linked skin issues like acne and psoriasis to the gut. Studies are also looking into how the gut biome affects reproductive health and hormone levels. 

How to keep your gut healthy

IAccording to the data I received from my nap, which was reviewed by neuroscientists at Elemind, my alpha wave activity remained high during my nap, which indicates that while I was resting and in light sleep, I didn't go into a deep sleeping stage. I suspected that would be the case for a 25-minute nap, and that also aligns with my experience wearing the headband. (I was aware of my surroundings but in a light sleep, kind of like how you feel when you're about to wake up in the morning.)

Everyone's gut microbiome is different, so there's no model for what a perfectly healthy one lookslike.

Carol Yepes/Getty Images

The image above, which Elemind refers to as a plot, is a polar histogram that shows the performance of the headband while tracking my alpha waves. On the left side, the plot shows the target onset phase and the distribution of all the stimuli (gray bars). The right side is a similar plot but for the target stimulus offset phase.

More simply put, “the onset [is] the phase of the brainwave when each sound pulse starts and offset is the phase of the brainwave when each sound pulse ends,” said Ryan Neely, VP of science and research at Elemind. All of this means that the headband was working as intended (more pulses at the beginning when my brainwave activity was high, or then less frequently when my target brainwave activity was reached, or 224 degrees).

The data confirms what I felt during my nap — that I had a light sleep nap. I certainly felt like I was resting and also felt I fell asleep pretty fast (what I felt was only about a few minutes). I’d say it was a pretty good power nap, especially since it was only 25 minutes long at 2 p.m. I’m curious to see if it’ll induce me into a more deep sleep during the night when I’m in the comfort of my home.

How to keep your gut healthy

IAccording to the data I received from my nap, which was reviewed by neuroscientists at Elemind, my alpha wave activity remained high during my nap, which indicates that while I was resting and in light sleep, I didn't go into a deep sleeping stage. I suspected that would be the case for a 25-minute nap, and that also aligns with my experience wearing the headband. (I was aware of my surroundings but in a light sleep, kind of like how you feel when you're about to wake up in the morning.)

The image above, which Elemind refers to as a plot, is a polar histogram that shows the performance of the headband while tracking my alpha waves. On the left side, the plot shows the target onset phase and the distribution of all the stimuli (gray bars). The right side is a similar plot but for the target stimulus offset phase.

More simply put, “the onset [is] the phase of the brainwave when each sound pulse starts and offset is the phase of the brainwave when each sound pulse ends,” said Ryan Neely, VP of science and research at Elemind. All of this means that the headband was working as intended (more pulses at the beginning when my brainwave activity was high, or then less frequently when my target brainwave activity was reached, or 224 degrees).

The data confirms what I felt during my nap — that I had a light sleep nap. I certainly felt like I was resting and also felt I fell asleep pretty fast (what I felt was only about a few minutes). I’d say it was a pretty good power nap, especially since it was only 25 minutes long at 2 p.m. I’m curious to see if it’ll induce me into a more deep sleep during the night when I’m in the comfort of my home.

How to keep your gut healthy

IAccording to the data I received from my nap, which was reviewed by neuroscientists at Elemind, my alpha wave activity remained high during my nap, which indicates that while I was resting and in light sleep, I didn't go into a deep sleeping stage. I suspected that would be the case for a 25-minute nap, and that also aligns with my experience wearing the headband. (I was aware of my surroundings but in a light sleep, kind of like how you feel when you're about to wake up in the morning.)

Everyone's gut microbiome is different, so there's no model for what a perfectly healthy one looks

Carol Yepes/Getty Images

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