Feeling tired once in a while is normal. A busy schedule, poor sleep, or stress can leave anyone low on energy.
As people grow older, they may notice they get tired more easily. However, constant tiredness that lasts for weeks or months should not simply be blamed on aging.
It can sometimes be a sign that the body is dealing with an underlying health problem that needs medical attention.
Many people think tiredness is only caused by a lack of sleep or low iron. While these are common reasons, doctors know there are many other conditions that can quietly drain a person’s energy. Some of these illnesses develop slowly, so people may not notice other symptoms at first.
One possible cause is an underactive thyroid, called hypothyroidism. The thyroid is a small gland in the front of the neck.
It makes hormones that help control how the body uses energy. When it does not produce enough hormones, the body’s systems slow down.
People may feel tired all the time, gain weight, feel cold, have dry skin, become constipated, or notice changes in mood. Research published in 2019 reported that ongoing fatigue is often one of the earliest signs of mild thyroid problems in older adults.
Another hidden cause is adrenal insufficiency. The adrenal glands sit above the kidneys and make hormones such as cortisol. Cortisol helps the body cope with stress, control blood pressure, and keep energy levels stable.
If the glands cannot make enough cortisol, people may feel weak, dizzy, lose weight, and become extremely tired. Because these symptoms are similar to other illnesses, the condition may be overlooked.
Heart disease is another possibility. Many people think heart problems always cause chest pain, but that is not always true. Some older adults mainly notice unusual tiredness before other symptoms appear. A 2021 study suggested that unexplained fatigue may be an early warning sign of heart disease in some people.
Long-term inflammation can also reduce energy. Diseases such as rheumatoid arthritis and lupus cause the immune system to attack healthy tissues.
This ongoing inflammation uses up the body’s energy and leaves many people feeling exhausted, even when they are not in severe pain. Research published in 2018 found that fatigue is one of the most common complaints among people with autoimmune diseases.
Low vitamin levels are another common reason for feeling tired. Iron and vitamin B12 are well known, but vitamin D is also important. It supports muscles, bones, and the immune system. A 2020 study found that many older adults with low vitamin D levels experienced weakness and fatigue.
Poor-quality sleep can also be the hidden problem. Sleep apnea causes breathing to stop and start many times during the night. Even if people do not remember waking up, their sleep becomes less refreshing.
A 2021 review showed that untreated sleep apnea can cause severe daytime tiredness and reduce quality of life.
The good news is that many of these conditions can be diagnosed with simple blood tests, heart checks, or sleep studies. Once the cause is found, treatment often helps people regain energy and improve daily life.
Constant fatigue should never be ignored. It is not always a normal part of getting older. If tiredness continues despite enough rest and healthy habits, it is worth talking with a doctor. Finding the real cause early can improve health and prevent more serious problems later.
If you care about health, please read studies that vitamin D can help reduce inflammation, and vitamin K could lower your heart disease risk by a third.
For more health information, please see recent studies about common exercises that could protect against cognitive decline, and results showing this MIND diet may protect your cognitive function, prevent dementia.
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