Do Using Smart Rings Actually Help You Be Healthier?

Posted on February 13, 2026 by Patrick Hercules

Recently, technology has brought us fitness trackers and smart watches that can help us track our workouts, daily steps, and even monitor our sleep, stress, heart rate, and blood oxygen levels.

However, smart rings have become another way to track our health, and can be used to monitor movement, body temperature, sleep, heart rate, stress, as well as menstrual cycles.

Unlike smartwatches, smart rings don’t have screens to view these health metrics. Instead, they use a Bluetooth connection to send health data to your smartphone.

When a smart ring detects a person’s cardiovascular health, it uses infrared photoplethysmography technology (PPG), which uses a light source and a photodetector on the surface of the skin to measure the variations in blood circulation. These variations can estimate heart rate variability, blood oxygen saturation, blood pressure, and artery stiffness.

Out of the different sensors a smart ring has, the PPG is the most studied one due to its proposed accuracy in tracking heart rate and monitoring overall cardiovascular health. However, most studies note that they are significantly less accurate than medical-grade technology.

According to the National Library of Medicine, in a study with 35 healthy individuals, researchers compared the heart rate and heart variability measured by a smart ring with an ECG during the night. Results showed that some health parameters matched the medical-grade measurement, but most were inaccurate.

To monitor body temperature, smart rings use a sensor called a thermistor, which estimates body temperature based on a person’s skin temperature. Smart rings also use this feature to assess stress levels and identify other bodily issues. However, a systematic review of the sensors and functionalities of wearable health technology, like a smart ring, indicates that these devices may not accurately indicate a person’s core body temperature, as researchers point out that a person’s skin temperature is a few degrees Fahrenheit lower than their body’s temperature.

What’s more, researchers emphasize that a person’s skin temperature fluctuates based on environmental conditions. When considering these two factors, it may be assumed that the thermistor sensor won’t be accurate.

Companies that produce smart rings have detailed the use of a variety of sensors to support women’s health. This feature relies mostly on the smart ring’s temperature feature, which they claim to use to track menstrual cycles and fertility windows.

Numerous studies have examined the accuracy of smart rings, which have produced promising results. According to the National Library of Medicine, in a pilot study with 22 participants, researchers used a smart ring to analyze temperature changes during the menstrual cycle. They discovered that the temperature readings were consistent with oral temperatures that were taken with ambulatory equipment.

In a separate study with 26 participants, it was found that this study was consistent with the previous study’s findings, demonstrating that smart rings could be a beneficial tool for monitoring menstruation. This study also detected that there was a significant temperature drop around ovulation, highlighting that smart rings could be an additional tool to track fertility.

Although these results are promising based on limited studies on smart rings, further research is needed as they are not 100% accurate.

Most of the smart rings on the market combine various metrics such as heart rate, heart rate variability, body temperature, and movement, to estimate a person’s daily stress levels and provide tips to reduce them.

According to the National Library of Medicine, research suggests that there is a connection between stress and decreased parasympathetic regulation, the regulation that affects heart rate, heart rate variability, and respiratory rate. These are changes that a smart ring could potentially detect.

Additionally, a study with 525 college students explored this subject further. The study indicated that sleep data from smart rings could help predict stress. Notably, some experts do not consider smart rings as promising as research, as they highlight the negative effect smart rings may have on mental health. The reason is that while smart rings are promoted as a tool to shift lifestyle habits, they may cause the opposite effect, noting that constant monitoring of health metrics can create obsessive behaviors and paranoia about a person’s well-being. It could also be harmful to a person’s self-confidence, as a person may feel like they are not meeting the expectations and goals that a smart ring sets for them.

Smart rings can perform a sleep analysis by tracking a person’s heart rate, blood oxygen, and sleep cycles. They may also include features, such as a snoring score and a recovery metric that indicates energy levels before a person starts their day.

Polysomnography (PSG) is used to track sleep, which uses a variety of signals such as brain activity, eye movements, muscle activity, blood pressure, heart rate, and more. Although smart rings are not as accurate as PSG, researchers have been drawn to them due to the smart ring’s potential to monitor a person’s sleep at home comfortably.

Any current evidence on smart rings for tracking sleep is still very limited and conflicting. While some small studies highlight their potential. However, studies with bigger sample sizes indicate that smart rings can over- or underestimate some sleep parameters. A study in the National Library of Medicine compared the accuracy of several health technology devices on 35 individuals overnight. The study found that a smart ring surpassed the accuracy of smartwatches in various sleep parameters such as wake, light sleep, deep sleep, and REM sleep.

Smart rings can measure a person’s physical activity with two sensors: an accelerometer that tracks movement and speed, and a gyroscope that helps determine orientation. Smart rings gather data from these motion sensors, as well as the PPG and body temperature trackers, to understand how physical activity affects the body.

Research is limited in this area; however, a study in the National Library of Medicine focused on the accuracy of smart rings in measuring caloric expenditure and steps. The results indicated that smart rings were far from accurate, causing researchers to note the need to improve these devices, specifically their estimation of energy expenditure.

Another study on step count was consistent with a study that indicated a smart ring overestimated step count, compared to a medical-grade device to detect motion called ActiGraph.

A systematic review on wearable tech devices supported the findings of the studies, noting that they may be useful for estimating step count but shouldn’t be trusted to measure calorie expenditure.

Smart rings and other wearable devices that can track a person’s health can be useful. However, it is important not to use them to self-diagnose conditions. It is important to see a healthcare provider when experiencing any symptoms to professionally diagnose conditions.

If you are experiencing any medical problems, you can schedule an appointment at Jamaica Hospital Medical Center’s Ambulatory Care Center. Please call (718) 206-7001.

All content of this newsletter is intended for general information purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Please consult a medical professional before adopting any of the suggestions on this page. You must never disregard professional medical advice or delay seeking medical treatment based upon any content of this newsletter. PROMPTLY CONSULT YOUR PHYSICIAN OR CALL 911 IF YOU BELIEVE YOU HAVE A MEDICAL EMERGENCY.

Benefits of Yoga for Heart Health

Posted on October 31, 2025 by Patrick Hercules

There are many aerobic exercises that can increase the heart rate and help prevent or manage heart disease. However, calming exercises such as yoga are good for the heart as well.

Yoga is a mind-body activity that involves moving through a series of body poses and breathing exercises that can improve strength, flexibility, balance, and relaxation. There are dozens of different formats, or practices of yoga, such as hatha, anusara, and ashtanga, that emphasize different focuses, such as toning, strength training, or meditation.

One of yoga’s clearest benefits to the heart is its ability to relax the body and mind. Emotional stress can cause several physical effects, including the release of hormones such as cortisol and adrenaline, which can narrow the arteries and increase blood pressure. The relaxation response that yoga provides not only slows the heart rate and lowers blood pressure; it may also reduce inflammation and promote favorable changes in blood vessel function that protect the heart.

Additionally, practicing yoga can help lower blood cholesterol and blood glucose levels.

As mind-body practices, yoga encourages people to slow down and be more mindful about heart-healthy behaviors, such as eating well and getting enough sleep. These habits, along with positive emotions that some forms of yoga aim to inspire, such as compassion and gratitude, may also help foster cardiovascular health.

Recent studies support the benefits of yoga for heart health. One study has shown that blood measurements and waist circumference, which are signs of heart disease, improved in middle-aged adults with metabolic syndrome who practiced yoga for three months.

Another study has shown that attending slow-paced yoga classes twice a week reduced the frequency of atrial fibrillation episodes in patients with that condition. Additionally, in another report, patients with heart failure who went through an eight-week yoga program showed improvement in exercise capacity and quality of life. They also had lower blood levels of markers for inflammation, which contributes to heart disease.

Research has also indicated that yoga may be a useful tool in helping smokers quit, as smoking is one of the biggest risk factors for heart disease.

If you would like to learn about other ways to be heart healthy, you can schedule an appointment at Jamaica Hospital Medical Center’s Cardiology Department by calling (718) 206-7100.

POTS (Postural Orthostatic Tachycardia Syndrome)

Posted on January 22, 2025 by Patrick Hercules

Postural orthostatic tachycardia syndrome (POTS) is a condition that causes your heart to beat faster than normal when you transition from sitting or lying down to standing up.

Each word of “postural orthostatic tachycardia syndrome” has a meaning:

Postural – related to the position of your body
Orthostatic – related to standing upright
Tachycardia – a heart rate over 100 beats per minute
Syndrome – A group of symptoms that happen together

Your autonomic nervous system normally balances your heart rate and blood pressure to keep your blood flowing at a healthy pace, despite your body’s positioning. However, if you have POTS, your body can’t coordinate the balancing act of blood vessel constriction and heart rate response, meaning your body can’t keep your blood pressure steady and stable. This causes a variety of symptoms, including:

Dizziness or lightheadedness, especially when standing up, during prolonged standing in one position, or on long walks
Fainting or near fainting
Forgetfulness and trouble focusing (brain fog)
Heart palpitations or a racing heart rate
Exhaustion/fatigue
Feeling nervous or anxious
Shakiness and excessive sweating
Shortness of breath
Chest pain
Headaches
Nausea
Bloating
A pale face and purple discoloration of your hands and feet if they’re lower than the level of your heart
Disrupted sleep from chest pain, a racing heart rate, or excessive sweating during sleep

POTS symptoms often get worse in the following situations:

Being in warm environments, such as in a hot bath or shower, or on a hot day
Standing frequently, such as when you’re waiting in line or shopping
Participating in strenuous exercise
When you are sick from a cold or an infection
Having your period

You can develop POTS suddenly or it can develop gradually. Symptoms vary from person to person. They may happen immediately or a few minutes after sitting up or standing. Lying down may relieve some of the symptoms.

Researchers aren’t sure what causes POTS. They currently believe there are multiple causes, which have been put into different subtypes of POTS, including:

Neuropathic POTS – this happens when peripheral denervation (loss of nerve supply) leads to poor blood vessel muscles, especially in your legs and abdomen
Hyperadrenergic POTS – this happens when your sympathetic nervous system is overactive
Hypovolemic POTS – reduced blood volume can lead to POTS. Low blood volume can cause similar symptoms that may overlap with neuropathic and hyperadrenergic POTS

There is also growing evidence that suggests POTS might be an autoimmune disease, meaning the immune system attacks healthy tissue for unknown reasons.

POTS can be difficult for healthcare providers to diagnose due to the many symptoms that can occur over time. People with POTS may have symptoms for months or years before they are finally diagnosed with the condition.

To confirm a POTS diagnosis or rule out other possible causes for your symptoms, your healthcare provider will ask questions about symptoms, medications, and medical history, and they will also perform a series of tests.

A tilt table test is the main way providers diagnose POTS, as it measures your heart rate and blood pressure as you change your posture and position. A healthcare provider may order other tests to help determine a diagnosis, including:

Blood and urine tests for causes of POTS and conditions that mimic POTS
QSART (a test that measures the autonomic nerves that control sweating)
Autonomic breathing test (a test that measures your blood rate and pressure response during exercise
Skin nerve biopsy

Unfortunately, there is no cure for POTS. However, healthcare providers use strategies to manage the symptoms. Treatment is highly individualized based on your symptoms and what works best for you. The main forms of treatment include:

Exercise and physical activity
Diet and nutrition

There is nothing you can do to prevent developing POTS. But there are steps you can take to try to prevent flare-ups by knowing what your triggers are, including:

Maintaining a consistent temperature
Avoiding prolonged standing
Avoiding alcohol

If you are experiencing any POTS-related symptoms, you can schedule an appointment at Jamaica Hospital Medical Center’s Cardiology Department by calling (718) 206-7100. If you are experiencing an emergency, please call 911 right away.

Mistakes That Can Affect Your Blood Pressure Reading

Posted on December 18, 2018 by Xavia Malcolm

Measuring your blood pressure at home is a very important part of properly managing hypertension. Therefore taking accurate measurements is crucial.

To ensure accuracy, there are several things you should and should not do while measuring, as they can affect your reading. Here are a few:

Always use the bathroom before measuring- Having a full bladder can add points to your reading.
Remain quiet- Talking while checking your blood pressure can cause deviations in measurements.
While seated make sure your back is supported and both your feet are placed flat on the ground-Measuring blood pressure in a posture where your back or feet are not supported can affect readings.
Keep your arm leveled with your heart- If your arm is not on the same level as your heart while getting a reading, you run the risk of getting measurements that are higher than your actual blood pressure level. Always make certain your arm is supported, you can rest it on a chair arm, table or desk to receive the best positioning.
Do not place the blood pressure cuff over clothing – Studies show that doing so can have an impact on systolic blood pressure. Your cuff should be placed on your bare arm during measurements.
Do not eat or drink anything 30 minutes before taking your blood pressure- Consuming food or drinking beverages within that time can result in a reading that may be inaccurate and high.

Improperly measuring your blood pressure can have serious consequences. According to the Centers for Disease Control and Prevention (CDC), “A reading that underestimates your blood pressure might give you a false sense of security about your health. But a reading that overestimates your blood pressure might lead to treatment you don’t really need.”

In addition to following best practices for an accurate blood pressure reading, it is important that you keep track of your numbers. You can use a notebook, app or chart to do so. If you are concerned about changes in your blood pressure readings, contact your doctor right away.

To speak with a doctor, or schedule an appointment at Jamaica Hospital Medical Center, please call 718-206-7001.

February is American Heart Month

Posted on February 1, 2018 by Andrew Rubin

Over 50 years ago President Lyndon B. Johnson proclaimed the month of February to be American Heart Month in order to bring attention to one of the leading causes of death in the United States. This tradition has been carried on by every President since.

Each year over 800,000 lives are taken as a result of heart disease, stroke and other cardiovascular diseases. Every 84 seconds someone in the United States dies from the disease and each year approximately 750,000 people experience a heart attack and of those, about 115,000 will not survive.

The American Heart Association recommends the following behavioral modifications to prevent heart disease:

Avoid smoking
Engage in some form of daily physical activity
Follow a healthy diet
Maintain a healthy body weight
Control cholesterol, blood pressure and blood sugar levels

The death rate from heart disease has been improving slowly over the last decade due to advances in medications, better diagnostic capabilities, and better access to health care, but the statistics are still pretty alarming. If you would like to schedule an appointment with a cardiologist at Jamaica Hospital, please call 718-206-6742.

Five Steps to Lowering Blood Pressure

Posted on October 12, 2017 by Andrew Rubin

If you have been diagnosed with high blood pressure, here are five lifestyle changes that you can make to help to lower it:
• Losing just ten pounds can have a significant effect on blood pressure.
• Partaking in regular physical exercise such walking, jogging, swimming and dancing are all good choices.
• Eating foods with whole grains, fruits, vegetables and low fat dairy is important.
• Drinking less coffee and tea will help lower blood pressure
• Quitting smoking will help to lower blood pressure.
High blood pressure can cause significant health problems if left untreated. Consult with your physician about ways that you can keep yours under control. If you would like to schedule an appointment with a physician at Jamaica Hospital, please call 718-206-7001.

How Does Caffeine Effect Your Blood Pressure?

Posted on July 18, 2016 by Zakiya Hazel-Jemmott

Are you one of many people who can’t function without having their morning coffee first? If so, there are a few effects that caffeine can have on hypertension. The java jolt of a caffeine fix may cause a jump in blood pressure — a particular problem in people who already have high blood pressure.

Caffeine can cause a short, but dramatic increase in your blood pressure, even if you don’t have high blood pressure. It is not clear what causes this spike in blood pressure. Some researchers believe that caffeine could block a hormone that helps keep your arteries wide enough for steady blood flow.

Some people who constantly drink caffeinated beverages have a higher average blood pressure than those who don’t drink any. Others who regularly drink caffeinated beverages develop a tolerance to caffeine. As a result, caffeine doesn’t have a long–term effect on their blood pressure. Research has shown that caffeine has a stronger blood pressure increasing effect in men who are older than 70 or who are overweight.

To see if caffeine might be raising your blood pressure, check your blood pressure within 30 to 120 minutes of drinking a cup of coffee or another caffeinated beverage. If your blood pressure increases by five to 10 points, you may be sensitive to the blood pressure raising effects of caffeine. If you plan to cut back on caffeine, eliminate it slowly over several days to avoid withdrawal headaches.

If you have high blood pressure, ask your doctor whether you should limit or stop drinking caffeinated beverages. Keep in mind that the amount of caffeine in coffee and other beverages varies by brand. Also, avoid caffeine right before activities that naturally increase your blood pressure, such as exercise, weightlifting or hard physical labor.

What is Pre-Diabetes?

Posted on January 29, 2016 by Joann Ariola

Are you one of the estimated 54 million people in this country who have pre-diabetes?

Pre-diabetes is a silent health condition that has no symptoms and is almost always present before you develop type 2 diabetes.

It is a condition in which blood glucose levels are higher than normal, but not high enough to be classified as full-blown diabetes. If you haven’t visited your doctor, a good way to see if you are at increased risk for pre-diabetes is to take the American Diabetes Association’s (ADA) Diabetes risk test by visiting

Among those who should be screened for pre-diabetes include overweight adults age 45 and older or those under age 45 who are overweight and who have one or more of the following risk factors:

Habitually physically inactive
Have previously been identified as having impaired fasting glucose (IFG) or impaired glucose tolerance (IGT)
Have a family history of diabetes
Are members of certain ethnic groups (including Asian, African-American, Hispanic or Native American)
Have had gestational diabetes or have given birth to a child weighing more than 9 pounds
Have elevated blood pressure
Have elevated cholesterol
Have polycystic ovary syndrome
Have a history of vascular disease

That said, if you have pre-diabetes, your risk of developing type 2 diabetes can be reduced by a sustained modest weight loss and increased moderate-physical activity, such as walking 30 minutes a day.

Through weight loss and increased physical activity, a dietitian may direct you on how to make food choices that cut down on the amount of fat and carbohydrates by:

Eating more foods that are broiled and fewer foods that are fried
Decrease the amount of butter you use in cooking
Eat more fish and chicken
Eat more meatless meals
Re-Orient your meals to reflect more vegetables and fruit

If you have symptoms such as increased thirst, frequent urination, fatigue and blurred vision, you may have crossed from pre-diabetes to type 2 diabetes.

It’s best to consult a physician if you’re concerned about pre-diabetes or if you notice any type 2 diabetes signs or symptoms. Jamaica Hospital Medical Center’s Ambulatory Care Center is centrally located and has convenient hours. To make an appointment, call 718-206-7001.

The Many Benefits of Garlic

Posted on September 4, 2015 by Michael Hinck

Looking for a wonder drug that can:

• Lower your blood pressure and cholesterol? Check
• Boost your immune system? Check
• Control you diabetes? Check
• Improve your digestive and respiratory system? Check

What is this new, breakthrough drug? It’s not a medication at all; in fact you can find it at your local grocery store. It’s garlic!

Garlic is a plant that is used in many cultures for both culinary and medical purposes for hundreds of years. Eaten on its own, or more commonly used as an ingredient in many tasty dishes, garlic contains allicin, which is known to have anti-oxidant, anti-viral, and anti-bacterial properties.

Garlic has been shown to lower blood pressure by relaxing vein and artery walls. This action helps keep platelets from clumping together and improves blood flow, thereby reducing the risk of stroke. Garlic also decreases the levels of cholesterol and triglycerides, substances that increase the risk of cardiovascular diseases. Studies suggest that regularly eating garlic helps lower blood pressure and controls blood sugar and cholesterol levels.

This popular herb may also improve immunity by stimulating some of the body’s natural immune cells. Studies suggest that garlic may help prevent breast, bladder, skin, stomach, and colon cancer. Garlic’s antibacterial properties also make it a wonderful anti-viral and decongestant to prevent and combat colds, coughs, and upper respiratory tract infections. In addition, Garlic is often used to treat many other common maladies such as ear infections, toothaches, and treatment for warts and athlete’s foot.

Garlic can be digested either cooked or in raw form (but only in small amounts). If you do not like the taste of garlic there are also powdered or caplet forms. Your doctor can recommend which form of garlic is best for you.

For most people, consuming garlic does not cause any serious side effects if taken in moderation, but it can cause heartburn or stomach irritation if taken in excess. Due to its blood thinning properties, individuals taking anti-coagulant medications should speak with their doctor before increasing their daily garlic intake.

Does the Alcohol In Red Wine Dampen Its Benefits?

Posted on February 6, 2015 by Xavia Malcolm

There have been many reports about how red wine can lower your blood pressure and improve your heart health. But don’t be so quick to open that bottle of Merlot at home. That’s because recent studies suggest that the antioxidants found in wine that may help prevent heart disease, are much more effective when the wine is non-alcoholic.

Wine contains antioxidants called polyphenols that can help prevent heart diseases. They increase the levels of HDLs, or “good cholesterol” in the blood, which protects against artery damage and can lower blood pressure. Another potential benefit is, polyphenols may help protect blood vessels in your heart and prevent blood clots.

Unfortunately, alcohol in red wine may dampen the blood pressure-lowering potential of its antioxidants. A study published in Circulation Research found that when men drank red wine containing alcohol, their blood pressure only went down slightly, but when they drank non-alcoholic red wine, their blood pressure went down enough to lower their risk of heart disease by 14%.

This is good news for those who want to receive the benefits of red wine, but don’t or can’t consume alcohol. In addition, while red wine has shown some benefits in moderation, consuming too much poses several health risks.

If you have high blood pressure and want to learn more about the potential benefits of red wine, please speak with your doctor. Jamaica Hospital’s Ambulatory Care Center has many doctors who can help. To make an appointment, please call, 718-206-7001.