What are the main warning signs of possible cancer?

The main warning signs of possible cancer include unexplained weight loss, changes in bowel habits, and persistent pain. These symptoms are important indicators that warrant further investigation, as they may signify underlying malignancies.

Unexplained weight loss, particularly if it is significant and occurs without changes in diet or activity, can be associated with various types of cancer, as tumors may utilize the body’s resources more than expected. Changes in bowel habits, such as diarrhea, constipation, or stool consistency, can indicate gastrointestinal cancers, including colorectal cancer. Additionally, persistent pain that does not resolve with normal treatments or lasts longer than expected can be a warning sign of cancer infiltrating surrounding tissues or organs.

Other options provided do not specifically relate to common cancer warning signs. Increased appetite and energy levels are generally not indicative of cancer; rather, they may suggest good health or recovery. Frequent headaches and sudden vision changes can be related to a variety of issues, including but not limited to neurological conditions or ocular problems, rather than direct cancer indicators. Difficulty sleeping and anxiety might indicate stress or psychological factors, but they are not specific red flags for cancer on their own.

Thus, the combination of unexplained weight loss, changes in bowel habits, and persistent pain makes option B the