Men More Likely Than Women for Late-stage Cancer Diagnoses

Recent research indicates that men in the United States are consistently more likely than women to receive diagnoses for regional or distant stages of cancer across a broad spectrum of nonreproductive solid tumors. This trend, analyzed through data from the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) 21 database, suggests that the stage at which cancer is identified plays a fundamental role in the persistent mortality disparities observed between sexes. While overall cancer mortality rates in the United States have declined by 34% over the last 30 years—sparing approximately 4.5 million lives—a gap in diagnostic staging remains a primary concern for clinical outcomes.

Understanding the Diagnostic Gap

Between 2015 and 2022, researchers studied over 2.4 million cancer cases. The study, published in the American Association for Cancer Research (Aacr) journal Cancer Epidemiology, Biomarkers & Prevention, highlights that for 16 specific cancer sites, men were significantly more likely to be diagnosed at a regional stage compared to a localized stage. Furthermore, for 17 cancer types, men faced higher odds of being diagnosed at a distant, or metastatic, stage.

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The largest disparities were identified in cancers of the tongue, thyroid, salivary gland, and stomach. For instance, men exhibited 151% greater odds of being diagnosed with regional tongue Cancer than women, and 134% greater odds for distant-stage diagnoses of the same site. According to lead author Beth Maclin of the National Cancer Institute, the stage at diagnosis is a primary prognostic factor. In general, the more advanced a cancer’s stage at diagnosis, the worse the patient’s prognosis tends to be, she noted. Maclin emphasized that understanding these staging differences is essential for identifying intervention points to improve survival rates.

Contributing Factors and Demographic Trends

The reasons behind these sex-based discrepancies are considered multifactorial. Experts point to variations in how individuals engage with the healthcare system. Existing research suggests that women visit doctors more frequently than men, providing more opportunities for clinicians to detect symptoms at an earlier, localized stage. There is also the possibility of diagnostic bias, where clinicians may perceive symptoms differently in males and females, potentially leading to varied testing or treatment pathways that could delay identification in men.

Separate findings published in Cancer Facts & Figures 2025 by the American Cancer Society further complicate the picture. While mortality rates continue to decline due to advancements in treatment and early detection, certain trends are shifting. The cancer incidence rate for women younger than 50 has risen to surpass that of men in the same age group, a trend driven in part by increases in breast and thyroid cancer cases. while some populations face disproportionate burdens due to social, economic, or environmental disadvantages, the study on staging indicates that the trend of men being diagnosed at later stages persists across different racial and ethnic groups, as well as varying household income levels.

Clinical and Research Perspectives

As the scientific community continues to analyze these patterns, several areas of focus are emerging:

• Refining Staging Systems: While the SEER database provides a comprehensive long-term view, clinical researchers are increasingly looking to transition toward more precise tumor-node-metastasis (TNM) systems to better understand individual patient outcomes.
• Addressing Data Gaps: Ongoing analysis aims to determine the full impact of the COVID-19 pandemic on screening delays, which likely affected detection rates significantly between 2020 and 2022.
• Individualized Care: Professionals advocate for tailored screening schedules and habitual engagement with healthcare providers to overcome systemic or behavioral barriers.

For individuals, the clinical consensus remains consistent: habitual engagement with healthcare providers is essential. As Maclin advises, everyone should go to the doctor regularly. Don't delay seeing a doctor if you notice something has changed in your body.