What causes cancer in general?

Syndrome occur when the tendons that pass through the carpal tunnel are chronically overused and become inflamed and swollen? Does mucus make breathing hard? What are the effects of growing an extra front tooth that is coming in upside down? What is stomatology? Could you survive if one of your fingers was cut off? Explain how sickle cell can cause a blood clot? How are lungs biological adapted for their function on humans? Where exactly is a pulled groin muscle? The Jamaican religious group which stresses millenarianism is? The liver removes excess from the bloodstream? Is sickle cell anemia recessive or dominant? Increased mineral content inside the skeletal system? What does the lung tissue look like when you cut into it? What are the longest ribs in the human body called? Did you hear about the guy who woke up from a brain transplant into his skull? Why are sarin nerve gas and insecticide parathion in small doses useful in the treatment of alzheimers? How big is a 7 mm kidney stone? What is normal hcg level for 3 months? I got my period and barely bleed and normally when I get it's a lot of blood. Well it stopped the day after I started. And had started back. What could cause this? How does radiation therapy work?

What causes cancer in general?