What is Cancer ??
Cancer can be defined as a group of diseases that are the loss of the body control the growth of cells in the affected area, and in fact there are more than a hundred types of cancer, each called the name of origin, and it is worth mentioning that cancer is the second cause of death in The World Health Organization (WHO) estimated the number of cancer deaths in 2012 to be around eight million worldwide, and the number of recent cases of cancer in the United States The same is true It should be noted that cancer differs from benign tumors spread through the blood vessels and the lymphatic system to reach the healthy tissues damaged, while benign tumors remain in place and not spread. It is worth mentioning that the most common types of cancers that affect men are lung cancer, prostate, colon, rectum, stomach and liver, while the most cancers that affect women are cancers of the breast, colon, rectum, lungs, cervix, and stomach.Symptoms and signs of cancer :
There are some symptoms and signs that may appear on people with cancer, but it should be noted that the emergence does not necessarily mean the presence of cancer, it is similar to the symptoms and signs of other diseases, and in fact depends on the symptoms of cancer on the location of cancer and its size, and its impact in tissues and other organs, Come:- The emergence of lumps in the breast, or blocks grow very rapidly other areas of the body.
- The appearance of blood in the urine.
- Change in eating habits, such as diarrhea or unexplained constipation, feeling of abdominal emptying after discharge, stomach or anus pain, blood in the stool, or persistent swelling.
- Respiratory disorders, such as persistent cough for more than three weeks, chest pain, and shortness of breath. It is worth noting that these symptoms may indicate pneumonia and may never be related to cancer.
- Unwarranted bleeding, such as coughing with blood, vomiting, menstrual bleeding, etc.
- Moles, moles, or more than 7 mm in diameter, or bleeding or feeling itchy; these changes may indicate skin cancer.
- Uncertainty of weight loss, and this lack of correlation to change the nature of food, sport, or tension.
- The appearance of Fever, often suffered by cancer patients at a particular station of the disease, especially if cancer or treatment affects the immune system (Immune System).
- It is important to note that fever appears mostly after the spread of cancer and transmission, except for cases of leukemia and lymph nodes, where fever appears in such cases at the beginning of the disease.
- Feelings of tiredness and general exhaustion. This symptom is due to several reasons. It may be the result of blood loss, as in colorectal cancer. It may be due to the onset of the disease in its early stages, as in leukemia, and may be due to the increase in size and spread.
- The feeling of pain, especially in bone cancer and testicular cancer, shows pain in the early stages of the disease. Brain cancer causes a feeling of pain in the head, In cases of colon, rectal, and ovarian cancer, the patient may experience back pain.
Factors that increase the risk of cancer :
In fact, scientists have not yet reached the real cause of cancer, so it is not possible to explain why some people are infected and others are not, but there are a number of factors that are thought to increase their risk of cancer.- Aging is the most common risk factor for cancer, with a quarter of cancer cases estimated to be between the ages of 65 and 74, but that does not rule out the risk of cancer at any age.
- Drinking alcohol: Alcohol increases the risk of liver, breast, mouth, throat, esophageal, and throat cancers.
- Chronic inflammation: Chronic inflammation occurs because of non-stop in time, due to exposure to chronic infection, as a result of suffering from obesity, or due to the interaction of the immune system with abnormal cells abnormal, and over time may occur inflammation changes in the DNA Deoxyribonucleic acid (DNA), which in turn causes cancer. For example, people with inflammatory bowel disease such as Crohn's disease and ulcerative colitis are more likely to suffer from colon cancer.
- Hormones: Taking some types of hormones may increase the risk of cancer, including estrogen, which increases the risk of suffering from endometrial cancer, and taking drugs made of estrogen and progesterone together increase the risk of breast cancer. However, this risk is not only associated with the use of drugs, but may also occur in the case of exposure to the menstrual cycle longer than usual, either due to delayed menopause, or because it comes first before the normal age. Pregnancy for the first time at a later age is considered to be an increased risk of cancer.
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