这样体检才有用（看新闻·说健康）

Core Insights - The article discusses the importance of regular health check-ups and the common misconceptions surrounding them, emphasizing the need for early detection of diseases, particularly cancer [4][10][11]. Group 1: Health Check-up Misconceptions - PET-CT is not a suitable health screening tool; it is primarily used for assessing already diagnosed cancer patients and has significant costs and radiation exposure [5][6]. - Claims that a single drop of blood can detect all cancers are misleading; current technology does not support such comprehensive testing [7]. - Testing for trace elements is not recommended unless for specific medical reasons, as results can be unreliable [9]. Group 2: Cancer Statistics and Risks - In China, approximately 4.3 million people are diagnosed with cancer annually, with a significant increase in incidence after the age of 40 [10][12]. - The primary risk factor for cancer is age, as cellular division and genetic mutations accumulate over time, increasing the likelihood of cancer development [10][12]. Group 3: Importance of Early Screening - The primary value of health check-ups lies in the early detection of diseases, particularly in identifying precursors to cancer, which can significantly reduce the risk of progression to full-blown cancer [11][12]. - It is recommended that individuals begin cancer screenings at age 40, especially those with a family history of cancer [12][13]. Group 4: Recommended Screening Tests - A cost-effective and efficient screening regimen is proposed, including tests for Helicobacter pylori, HPV, hepatitis B, and specific cancer screenings for both men and women [14][15][17][18]. - Early detection through these screenings can lead to better treatment outcomes and long-term survival rates for common cancers such as gastric, colorectal, lung, cervical, and breast cancer [18][29].