Understanding Cancer and Its Causes
Cancer is a complex disease with numerous possible causes, affecting millions of people worldwide. At its core, cancer occurs when certain cells in the body begin to divide uncontrollably, disrupting normal cellular functions and spreading to surrounding tissues. In a healthy body, cells grow, divide, and die in an orderly manner. However, when cancer develops, this balance is disrupted, leading to excessive cell growth and tumor formation.
Common Triggers of Cancer
Medical experts have identified several key risk factors that contribute to cancer development:
- Smoking and Tobacco Use: One of the leading causes of cancer, particularly lung cancer.
- Excessive Sun and Radiation Exposure: Prolonged exposure to UV rays and other radiation sources increases cancer risk.
- Viral Infections: Certain viruses, such as HPV and hepatitis, have been linked to various types of cancer.
- Poor Diet and Physical Inactivity: Research has shown that nearly 20% of cancer cases in the U.S. are related to obesity, poor dietary choices, and a sedentary lifestyle.
While some risk factors are beyond human control, many cancers can be prevented through healthy lifestyle choices. A balanced diet, regular exercise, quitting smoking, and maintaining a healthy weight can significantly lower the risk of developing this disease.
