Lifestyle
6 Signs of a Slow Heart Rate Most People Blame on Getting Older
By Curtis Jones · October 22, 2026
Feeling winded on the stairs, a little foggy in the afternoon, or lightheaded when you stand up can seem like ordinary parts of getting older. Sometimes they are. But the same complaints can also point to a heart that is beating too slowly to keep the brain and body supplied with oxygen.
The condition is called bradycardia. Most adults have a resting heart rate between 60 and 100 beats per minute, and bradycardia means a resting rate slower than 60 beats per minute, according to the National Heart, Lung, and Blood Institute. A slow rate is not always a problem. The Mayo Clinic says a resting rate of 40 to 60 is common in healthy young adults and trained athletes and quite common during sleep, and some people with bradycardia have no symptoms at all.
Trouble starts when the heart can’t pump enough oxygen-rich blood. When that happens, Mayo lists these six symptoms.
Feeling very tired. Mayo notes the fatigue is often worse during physical activity, so a walk or yard work that used to be easy may leave you drained. It is easy to chalk that up to age or a poor night’s sleep.
Dizziness or lightheadedness. A slow heartbeat can leave too little blood reaching the brain, which can make you feel unsteady.
Fainting or near fainting. Passing out, or feeling as if you are about to, is a sign worth taking seriously, especially in someone who is also at risk of falls.
Shortness of breath. Getting winded more easily than you used to can be a heart signal, not only a sign of being out of shape.
Confusion or memory problems. Mayo lists these among the symptoms, which is one reason a slow heart rate can be mistaken for normal forgetfulness.
Chest pain. Any chest pain deserves medical attention, whatever the cause.
The National Heart, Lung, and Blood Institute lists similar symptoms for heart rhythm problems in general, including tiredness or weakness, dizziness and fainting, confusion, chest discomfort, and difficulty breathing.
Age itself is one of the reasons. Mayo lists heart tissue damage related to aging as a cause of bradycardia and names older age as a risk factor. NHLBI says that as we age, scarring and other changes in the heart can raise the risk of rhythm problems, and older adults are more likely to have conditions such as high blood pressure, heart failure, diabetes and thyroid disease that can lead to them.
Other causes on Mayo’s list include heart disease or a past heart attack, an underactive thyroid, changes in potassium or calcium levels, obstructive sleep apnea, and certain medicines, including sedatives, opioids, and some drugs used to treat heart and mental health conditions. That last group is one reason it helps to bring a full medication list to your appointment. Do not stop a prescribed medicine on your own.
You can check your own pulse. NHLBI suggests placing your index and middle fingers on the inner wrist, below the thumb, counting the beats for 30 seconds and doubling the number. Some smartwatches and phone apps can also show your resting heart rate.
Treatment depends on the cause. Mayo says a pacemaker may be needed if bradycardia is severe. Possible complications of bradycardia, according to Mayo, include frequent fainting, heart failure, and sudden cardiac arrest.
If you are worried about a slow heart rate, Mayo recommends making an appointment for a checkup. If you faint, have trouble breathing, or have chest pain lasting more than a few minutes, call 911.
This article is for general information and is not medical advice. Talk with your doctor about any symptoms and before making changes to your medicines. This article was produced with the assistance of AI and fact-checked against the sources cited by LightWave Reports.