Cancer causes and symptoms vary among the different types of cancer. Numerous types of cancer have some of the same cancer causes and symptoms.

Even though the types of cancer can cause different symptoms, there are some cancer symptoms that are common with all types of cancer. One of the most common cancer symptoms is fatigue. Fatigue caused by cancer is a persistent lack of energy which may be caused by anemia.

Another common cancer symptom is unexplained weight loss. If a person has a decreased appetite and loses ten pounds or more without dieting, the person should consult a doctor since this type of weight loss can be caused by cancer and many other diseases.

When the immune system is under attack as it is with cancer and other diseases, the person often experience is fevers. The fevers caused by cancer are either persistent or frequent. Some types of cancer do not cause fever until they cancer spreads to other parts of the body.

Several types of cancer cause pain. The pain may be felt at the onset of the cancer were after the cancer has spread and is affecting the person’s organs and nerves. Types of cancer may cause pain in certain areas of the body such as shoulder pain as a symptom of lung cancer.

Many types of cancer can cause changes in bowel habits. A cancer patient may experience diarrhea, constipation, gas, or blood in the stools. Anyone who experiences significant changes in bowel habits should consider being examined by a doctor since cancer and many other illnesses can cause these symptoms.

Different types of cancer have different causes. For example, sunburns and sun exposure increases a person’s risk of skin cancer, but it does not increase the risk of other types of cancer like lung cancer or pancreatic cancer.

A genetic predisposition to a type of cancer is a common cause of many types of cancer. If a person has a family history for a particular type of cancer, they are at increased risk of developing cancer.

There are also other contributing factors to cancer. A sedentary lifestyle and poor diet can make someone prone to cancer especially if they have a family history of the cancer and have been exposed to carcinogens that caused the cancer.

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