Cancerous Diseases

• Carcinogens and chemical materials.
• Radiation.
• Hormonal imbalance and genetic mutations.
• Genetic factor.

Symptoms:

• Appearance of tumor or lump anywhere in the body.
• Continuous constipation or diarrhea.
• Difficulty swallowing or digestion.
• Abnormal bleeding or blood in the stool or urine.
• Disruption in the menstrual cycle in women without reason or abnormal vaginal discharge.
• A noticeable change in moles or wart.
• Annoying and persistent coughing or change in the sound.
• Permanent wound or sore that doesn't heal.
• Weight loss for no obvious reason and night sweats or fever.

Diagnosis:
Cancer is diagnosed in some people through medical tests such:

• Blood laboratory tests.
• Regular X-rays, CT or MRI.
• Endoscopic such as colonoscopy.
• A biopsy of the tumor.

Risk Factors:

• Prolonged and unprotected exposure to direct sunrays is one of the factors of skin cancer.
• Smoking and second hand smoking.
• Eating unhealthy foods.
• Obesity and lack of exercise.
• Genetic factors.
• Unsafe exposure to contaminated materials or active radiation. 

Complications:
Cancer may lead to many complications such as:

• Proliferation of cancer cells in the body.
• Not responding to treatment or reoccurrence of the disease.

• Surgical treatment.
• Radiation therapy.
• Chemotherapy.
• Immunotherapy.
• Hormone therapy.
• Genetic therapy.

Prevention:

• Quitting smoking.
• Avoiding obesity and maintaining normal weight.
• Avoiding prolonged exposure to harmful sunrays.
• Eating vegetables and fruits and healthy foods rich in fiber.
• Exercising regularly.
• Consulting your doctor in case of any abnormal changes in your body.