Signs of Cancer: 

1.Unexplained Weight Loss, Lumps, Rectal Bleeding, Pain, and Persistent Cough Unexplained Weight Loss: Cancer cells competing with normal cells for nutrients can lead to weight loss. 

2.Unexplained Lumps: Lumps that are immobile, hard, and rapidly growing, especially in areas like the breasts, neck, armpits, or groin, often indicate malignant tumors.

3.Rectal Bleeding:  Bright red color suggests bleeding from the sigmoid colon or rectum, while darker red or brown color suggests bleeding from the small intestine or right-side colon. Gastrointestinal bleeding appears very dark.

4.Unexplained Pain: Primary tumors or metastasis may cause unexplained pain in different parts of the body. Tumor-related pain tends to be long-lasting and deep. 

5.Persistent Cough: While coughing is commonly linked to common illnesses, a persistent cough that doesn't go away over time can be a symptom of lung cancer.