A healthier lifestyle doesn’t just mean hot yoga and matcha lattes, it also means less technology and less radiation. But in a world where everything is electronic, from Wi-Fi routers to wireless earbuds, we’ve started wearing that exposure on our bodies 24/7. And now, with wearable tech attached to our bodies even while sleeping, people are wondering if it’s even safe?
If you too, have an Oura Ring on your finger day and night, tracking every temperature shift, heartbeat and step, and wondering about the side effects, you’ve landed on the right page. Oura Ring side effects are more about discomfort, skin irritation, fit issues and data anxiety rather than serious health problems. But some users may need to be more cautious than others.
Although being an Oura user myself, I haven’t had any such symptoms or side effects other than the occasional discomfort, but what do I know? I just bought it a few months ago. But my health journey led me to look deeper into any long-term side effects it might have.
Disclaimer: Oura Ring is not a medical device and should not be considered to diagnose or treat a medical condition. If you feel like something is off, please consult a doctor and get proper tests done.
Quick Answer: Is Oura Ring Safe?
When worn correctly, the Oura Ring is absolutely safe to wear for most users. The common Oura Ring side effects people complain about are skin irritation, sizing issues and anxiety from constantly checking their data.
A few times I’ve noticed my Oura Ring overheating, but that’s mostly when it’s been on the charger for too long.
That said, people with pacemakers or circulation issues should consult a doctor before relying on it for monitoring your conditions.
Oura Ring Side Effects at a Glance
| Side effect/concern | How common? | Likely cause | What to do |
|---|---|---|---|
| Skin irritation/rash | Possible | Moisture, friction, soap, sensitive skin | Remove and dry your skin and ring. See a dermatologist if the issue persists for 2-3 days. |
| Finger swelling/numbness | Possible | Incorrect size, water retention, nighttime swelling, too much salt in your diet, sensor pressure | Swap finger/size, remove if painful. |
| Data anxiety | Possible | Checking scores constantly | Look at weekly trends and reduce notifications. |
| EMF concern | Common search concern | Bluetooth syncing | Use Airplane Mode if concerned. |
| Prop 65 warning | Concern, not proof of harm | California chemical disclosure | Oura Ring 4 ceramic does not require a Proposition 65 warning. Oura Ring Gen3 and 4 carry the label as a precautionary standard required by the law in the state of California. |
| Overheating | Rare but serious | Battery/device fault | Remove the ring immediately and contact Oura. |
Common Oura Ring Side Effects
1. Skin Irritation, Redness, Rash or Itching
Up until now, the only side effect I had with my Oura ring was a mild rash, but that is not the case with everyone. You can wear the ring all day, but wearing it 24/7 can affect your skin after a while, even if the inner molding of the ring is non-allergenic and non-metallic.
Why it can happen
This Oura Ring side effects can totally depend upon your skin sensitivity and how it adapts to different wearables. Another reason could be a wrong size or constantly washing your hands with the ring on and not drying it properly.
How to prevent it
Remove the ring and make sure it is dry. Swap the size if it’s a fit issue and your ring is new or just swap and wear it on some other finger where it doesn’t feel too tight.
When to stop wearing
If the itchiness or redness doesn’t go away in 3-4 days, consult a dermatologist.
2. Finger Swelling, Tightness, or Numbness
I often find my finger swollen, especially during the night, when I wear the ring while sleeping. However, my colleague didn’t.
Why your finger may swell at night
Too much salt/alcohol intake the previous day can lead to water retention, causing the fingers to swell at night, leading to this Oura Ring side effect.
What to do
Remove the Oura Ring while sleeping and limit salt intake.
3. Nocebo Effect – Psychological Disturbances
Some of you might wonder what this term means. Let me tell you, the Nocebo effect means having negative expectations of something, or you can say the exact opposite of Placebo. While the Oura ring is said to be a revolutionary health-tracking device, it throws out some bad data every day, where you need to filter out what is worth reacting to and what is not.
Okay, let’s understand this Oura Ring side effect with an example: You won’t even be aware of the many real-life situations that will naturally raise your heart rate until you have a tracker that notifies you of everything quite frequently. Correct?
Let’s say that your heart rate will rise when you are feeling excited about a surprise gift, tense about a meeting or going shopping. You won’t even notice this because these conditions are far too small for you to be aware of. However, having a gadget or tracker that notifies you and allows you to see it every time it occurs can undoubtedly cause more harm than benefit. People getting obsessed with the perfect health score and checking every other minute whether they are doing okay or not has led to the Nocebo effect that is harming the psyche of people with disturbed mindsets.
Why it can happen:
It is possible for the user to receive a notification of every little change in your body that the Oura Ring detects.
How to prevent it:
You need to filter out what things are worth noticing and which ones are not that important to stress over.
When to stop wearing:
If you find yourself checking your steps or your recovery scores more times in a day than actually being in the moment and working towards your health goals, it’s a sign to take a step back and leave your Oura Ring on the nightstand for a few days. Check in with how your body actually feels, not what the data says.
4. Oura Ring EMF Radiation: Should You Be Worried?
Another side effect of the Oura ring is the EMF radiation it emits. Considering that we are constantly surrounded by electronics, Wi-Fi, and Bluetooth, it doesn’t seem too far fetched to be worried that something so close to our body could be harmful as well.
What Oura says about Bluetooth and SAR
The facts actually paint a very different picture. Oura released a report which states that the EMF radiation emitted by the Oura Ring is very minimal and is actually designed to limit exposure as much as possible. In fact, its Specific Absorption Rate (SAR) is just 0.0003 W/kg, which is much lower than the 2.0 W/kg safety limit imposed on devices used around the body.
Oura also notes that the Bluetooth only turns on in short spurts, well below 1% of the day. It is mainly only used when syncing the data or updating the firmware.
Practical low-exposure tips
Although the EMF radiation is an Oura Ring side effect, it is nothing to worry about. If it bothers you, you can turn on the Airplane Mode to limit its connectivity even further.
5. Sleep Score Anxiety and Orthosomnia
The Health tech hedge fund industry is currently working on manipulative marketing, compelling people to buy something they can live without. Having constant nagging notifications showing poor health is actually leading to health-related anxiety and depression.
So, to avoid such a situation, I talked with my doctor. He confirmed that although the Oura ring is a blessing in disguise, it is doing more harm than good, at least to some of his patients. Let’s understand how this Oura Ring side effect hampers mental health in some people.
Suppose a person has a fast heart rhythm and is aware of it. He can feel the palpitations and know the techniques to calm down whenever they happen. But from now on, to track it, he buys the Oura ring.
So, the ring started warning him after he played a game that he would have high heart rates, and he started getting anxious and then he started getting worse outcomes with his heart rhythms. This is how it works and tracks things because what we do with that information is the side effect and is really problematic.
How sleep tracking can become stressful
Having constant feedback and notifications can make it feel like you have serious health issues when it could be totally normal for your baseline. Even aiming to get a perfect sleep score can be taxing and instead make you stay up all night. This can sometimes increase anxiety instead of reducing it, leading to an Oura Ring side effect.
How to use Oura data without obsessing
Do not react to every health alert and every biomarker that is marked red. Filter out the data that actually matters to you.
Weekly trends vs daily scores
Look at weekly trends and not daily scores. A low HRV one day could be because of overtraining at the gym and not be a call for help.
Accuracy Limits: Helpful, But Not Perfect
Although the accuracy of the Oura Ring is near perfect, the Oura Ring side effect is not the data, but how we stop relying on our feelings and only feel what the data tells us to. It is best to listen to your body and understand how you are feeling rather than the data telling you how to feel.
Sleep tracking
Oura Ring Gen3, in a study conducted by Thomas Svensson et al., closely matched lab-grade sleep testing for most metrics with an overall accuracy of 91.7%-91.8% and a 94.8% (PABAK: 0.83–0.84) reliability.
However, it did slightly underestimate the sleep efficiency by 1.1%–1.5% and REM sleep by 4.1–5.6 minutes.
HRV and readiness score
Another study by M. B. Dial et al., reported that the Oura Ring 4 showed strong accuracy in terms of HRV with an agreement (CCC) of 0.99 and MAPE of 5.96 ± 5.12%. While the Oura Ring Gen 3 had an agreement (CCC) of 0.97 and an MAPE of 7.15 ± 5.48%.
Since readiness scores highly depend on HRV, the Oura Readiness Scores can be highly reliable.
Activity and Workout Tracking
While the Oura Ring delivers accurate and reliable results for workout tracking, such as heart rate, HRV, automatic activity detection, etc., it lacks real time stats such as pace and distance. That said, it is also not the most practical because of its form factor because it scratches while weightlifting and is also not comfortable. I cannot see my metrics such as the Cardio Zone and heart rate in real time, which is why I prefer my Apple Watch or Garmin for workouts.
Is the Oura Ring Safe for you? Medical Conditions Where Caution Is Needed
If you are someone without a medical condition and want to monitor your health, wearables, especially the Oura Ring is a great tool. However, if you have certain health concerns, it’s best to use them with caution and take their data with a grain of salt.
Sleep apnea
Oura Ring can be a very helpful tool in getting useful insights into your sleep patterns and breathing disturbances during the night if you have been diagnosed with conditions such as sleep apnea.
However, it cannot be used as a tool to diagnose sleep related disorders since it might miss certain readings or underestimate the severity of your condition.
Pacemaker
While the Oura Ring emits very low EMF radiation, you should still consult your doctor before wearing it if you have a pacemaker.
Arrhythmia
In case of people having arrhythmia, medical monitoring should always take priority because while the Oura Ring can be helpful in detecting heart rate trends, it might miss some signals and not diagnose conditions like arrhythmia.
Blood circulation issues
If you are diagnosed with conditions which affect your blood circulation, data like heart rate and body temperature may become inconsistent and less reliable.
Restless leg syndrome
Since the Oura Ring relies on movement to detect sleep and sleep stages, people with restless leg syndrome can have incorrect sleep data.
Proposition 65 Warning
The one thing I was not warned about before purchasing the Oura Ring was the Proposition 65 warning. This might be an Oura Ring side effect that is easily disguised by the other extraordinary features Oura claims to provide.
What the warning means
Proposition 65 simply indicates the potential presence of certain chemicals (most likely in the inner molding) that are considered harmful according to the California State law. It doesn’t necessarily reflect the actual level of exposure during day to day use.
Does it mean the ring causes cancer or reproductive harm?
Proposition 65 is more of a legal disclosure than an Oura Ring side effect. It means that the product contains trace amounts of certain materials in its batteries or internal components that may be harmful and can cause cancer or reproductive harm.
It does not mean that there is any guaranteed risk involved in wearing the Oura Ring every day.
Which models have the warning?
Oura Ring 4 Ceramic does not need the Proposition 65 warning, posing no Oura Ring side effects. However, Oura Ring Gen3 and Oura Ring 4 carry the warning under California law.
Oura Ring Overheating and Battery Safety
What recent reports say
Oura Ring overheating is not a common issue, but recently, some people have been pointing out this Oura Ring side effect to the point of actually leaving burn marks in rare cases. This did raise concerns because the ring has a lithium-ion battery and sits so close to our skin.
How rare is this?
This Oura Ring side effect has been officially addressed as “extremely rare” and isolated with no evidence of a widespread concern. Compared to the millions of devices in use, the few cases highlighted suggest a very low degree of such a risk, but not zero.
What to do if your ring feels hot
If you ever face this issue of your Oura Ring feeling hot, remove it immediately. Also, avoid charging it when it is overheated and keep it away from direct sunlight or hot cars. Check for visible signs of damage and contact Oura support immediately.
When You Should Remove Your Oura Ring Immediately
You should remove your Oura Ring immediately when:
- You see redness around the area of the skin where you wear the ring.
- The ring feels warm or hot.
- Your fingers swell up or the ring feels tight.
- You notice a burning smell.
How to Reduce Oura Ring Side Effects
Wear it on the right finger
Choosing your perfect size is the key to having your metrics delivered the most accurately. Use the Oura Ring sizing kit and follow our guide to get the best fit before you put a ring on it!
Keep the ring and skin dry
If you are a germophobe like me, you likely wash your hands several times a day. While the Oura Ring is waterproof, please remove it and dry your hands and your ring immediately. Trapped moisture can cause a skin rash and irritation, leading to Oura Ring side effects.
Use Airplane Mode at night if concerned
Although we have established that the EMF radiation is negligible and not an Oura Ring side effect, if you are still concerned, you can enable Airplane mode at night if you are still worried.
Stop checking scores constantly
Anxiety is an Oura Ring side effect that can only be controlled by ourselves. If you feel like you’re getting more stressed by constantly checking your data and your scores, take a step back and check in with your body and how it feels for a few days.
Use Oura as a trend tool, not a diagnosis tool
Like I said before, a one-off reading can mean nothing. Your hormones, cycle phases, overtraining, bad sleep and even certain illnesses can affect your data. Look for trends instead of everyday measurements.
Wrap Up
While the Oura Ring and its capabilities fascinate the whole health tech world, I feel that with so much health data roaming around in the Oura app, it is sometimes too hard to understand what is beneficial and what is purely trash. Believe me when I say it is better to get guidance and gather enough data so that you know what works for you.
The biggest concerns surrounding the Oura Ring side effects are not health risks that need to be looked into, but smaller, everyday issues like skin irritation, fit issues and anxiety from data.
I have an Oura ring 4 and have worn it constantly for the past 6 months, with no problems… Except that I have started having pain up the arm that I wear it on (L), especially at night. I have started wearing it on the other side (R), just to give the the first side a break. I worry that the EMF’s are causing irritation or damage to the main nerve or blood vessel going up that arm. Have you heard of anything like this from others?
Hi, Lise. The Oura Ring does emit EMF but those are very low levels, and highly unlikely to cause a nerve or blood vessel damage. While I haven’t heard such a case from anyone else, it might be compressing a nerve that’s running up your arm. Is your Oura Ring too tight? Try wearing it on another finger where it isn’t too tight. Also, does the pain persists when you remove it and shift to the other hand? Either way, it would be a good idea to get it checked by a doctor to rule out any underlying issue and get a proper diagnosis. Hope you find some answers and feel better soon.