Women Live Longer—But at a Cost: New Evidence on Sex Differences in Cancer Outcomes
- 2 days ago
- 2 min read
Rakchha Chhetri, Natansh D Modi, Bradley D Menz, Erik Cornelisse, David Postma, Nicole M Kuderer, Gary H Lyman, Sandra M Swain, Lee X Li, Ahmad Y Abuhelwa, Ross A McKinnon, Sina Vatandoust, Ganessan Kichenadasse, Andrew Rowland, Michael J Sorich, Ashley M Hopkins, Sex-based prognosis in industry-sponsored advanced solid tumour trials: an individual participant data meta-analysis of survival and adverse events, JNCI: Journal of the National Cancer Institute, 2026;, djag046, https://doi.org/10.1093/jnci/djag046
Do men and women respond differently to cancer treatment?
A large new study looked at whether men and women respond differently to cancer treatments—and the results suggest they do.
What did the study look at?
Researchers combined data from over 20,000 patients in nearly 40 clinical trials for advanced cancers. These trials helped lead to FDA-approved treatments.
They compared:
How long people lived after treatment
How long their cancer stayed under control
How often they had serious side effects
What did they find?
1. Women lived longer on average
Women had better outcomes than men:
They were less likely to die from their cancer
Their cancer was less likely to get worse as quickly
2. But women had more side effects
Even though treatments worked better for women, they were also:
More likely to have serious side effects from treatment
3. This pattern was seen across many cancers
The results were similar across:
Different types of cancer
Different treatments (like chemotherapy, targeted therapy, and immunotherapy)
What does this mean for patients?
This study suggests that biological differences between men and women matter in cancer care.
For women:
Treatments may work better, but
Side effects may need closer monitoring and management
For men:
There may be a need to better understand why treatments are less effective and how to improve outcomes
Why might this happen?
Scientists don’t know all the answers yet, but possible reasons include:
Differences in the immune system
How the body processes medications
Hormones and body composition
Why this matters
This research could help doctors:
Personalize treatment based on sex
Better predict who might benefit most from certain therapies
Manage side effects more effectively
Bottom line
Men and women may experience cancer treatment differently. Understanding these differences can help improve care, safety, and outcomes for everyone.
