Cancer is a serious condition that often develops silently, with few or no symptoms in its early stages. Despite this, the body may still give off subtle warning signs that something isn’t right. These symptoms are frequently mistaken for minor health issues or ignored altogether. Recognizing them early can significantly improve the chances of successful treatment. Below are ten critical cancer warning signs that should never be overlooked.

One of the most noticeable symptoms is unexplained weight loss, especially if you’ve lost 10 pounds or more without changes to your diet or activity levels. This could point to cancers such as stomach, lung, or pancreas. Persistent fatigue is another red flag; ongoing exhaustion that doesn’t improve with rest or sleep might indicate leukemia or cancers of the colon or stomach.

Lumps or thickened areas in the breast, testicles, or other parts of the body may also signal cancer. While not all lumps are dangerous, any new or unusual growth should be examined by a doctor. Unusual bleeding, such as blood in stool or urine, or vaginal bleeding outside of menstruation, is often associated with cancers like colorectal, bladder, or cervical. Similarly, persistent cough or hoarseness—especially if it lasts over three weeks and involves blood—can point to lung or throat cancer.

Difficulty swallowing or feeling that food is stuck in the throat can indicate esophageal, throat, or stomach cancer. Another digestive-related symptom is chronic indigestion or heartburn that doesn’t improve with typical remedies, which could signal esophageal or stomach cancer.

Changes in bowel habits, like prolonged diarrhea, constipation, or oddly shaped stool, are possible indicators of colorectal cancer. Similarly, urinary changes, such as frequent or painful urination or blood in the urine, may suggest prostate, bladder, or kidney cancer.

Finally, persistent pain that doesn’t resolve or worsens over time should be taken seriously. Pain may be an early or late sign of cancer, depending on its location and cause. While none of these symptoms alone confirm cancer, seeking medical advice early can lead to timely diagnosis and potentially life-saving treatment.