Some people bounce out of bed the moment their alarm rings, but for me, mornings usually start with checking in on how my body actually feels.

Sometimes it’s nausea, other times extreme tiredness or muscle aches.

One symptom in particular deserves serious attention — especially if it lingers and keeps bothering you throughout the day.

A term borrowed from French

We all have mornings where getting out of bed feels impossible. Maybe it’s a late night, skipping breakfast, or just feeling drained before your day even starts.

For many, it’s easy to chalk up constant fatigue to a busy life — long work hours, endless scrolling on your phone, or just never fully shutting off.

Unfortunately, some people feel that exhaustion never really goes away, it sticks with you all day, every day, no matter how much rest you get. Some might argue it’s just burnout, and sure, that could be the case.

But experts at Johns Hopkins Medicine say that extreme tiredness that doesn’t improve with rest could sometimes be an early warning sign of cancer. It’s a subtle signal, but one worth paying attention to.

Fatigue, a term borrowed from French, refers to an overwhelming sense of tiredness, exhaustion, and low energy.

Unlike normal tiredness, fatigue cannot be relieved by sleep or rest.

Experts at Johns Hopkins Medicine clarified, “This isn’t fatigue similar to how you feel after a long day of work or play. Extreme fatigue that doesn’t get better with rest can be an early sign of cancer.”

They explained, “Cancer uses your body’s nutrients to grow and advance, so those nutrients are no longer replenishing your body. This ‘nutrient theft’ can make you feel extremely tired.”

Other warning signs

Cancer fatigue can result from the side effects of treatment or the cancer itself.

While fatigue alone isn’t a definitive warning, it’s one of the easiest symptoms to miss. The Johns Hopkins team notes that tiredness can stem from many causes, stress, diet, or poor sleep, but if it becomes “severe enough to affect your quality of life,” it’s time to see a doctor.

If you’re feeling unusually exhausted throughout the day, experts say it’s worth paying attention — and there are other warning signs people often overlook.

Medical professionals also highlight additional symptoms that shouldn’t be dismissed. “Unexplained weight loss of 10 pounds or more, recurring fevers—especially at night or without signs of infection — and persistent pain are all red flags that may warrant further investigation,” they explain.

Changes in your skin can be another signal something’s wrong, such as yellowing of the eyes or fingertips, which could indicate jaundice, or moles that begin to change in shape, size, or color.

Keep in mind: most tiredness isn’t linked to cancer. Still, if you notice persistent or unusual symptoms, trust your instincts. The main point: listen to your body and don’t brush off warning signs that stick around.