cancer research

New research has identified 485 chemicals used in US pesticide products that are linked to breast cancer. The findings, reported by The Guardian, are raising concerns about consumer and worker exposure to common agricultural chemicals and prompting calls for tighter regulation and further safety review of pesticide ingredients.

A new study shows that loss of parts of the Y chromosome, a change seen in many men as they age, can actively drive cancer development. Researchers report the missing genetic material affects tumour growth in men, offering a possible explanation for why certain cancers behave differently between the sexes.

New reporting highlights that people who survived cancer in childhood face a significantly elevated risk of serious mental health difficulties in adulthood, including depression, anxiety and other psychiatric conditions. The findings point to long-term psychological effects of early cancer diagnosis and treatment, and renew calls for survivors to receive sustained mental health monitoring and support, not just physical follow-up care, well into their adult lives.

Researchers led by Dr. Jona Kayser at MPZPM report that physical processes in dense cell populations play a decisive role in determining the optimal timing of treatment cycles. The finding addresses treatment resistance, described as one of the key challenges in cancer and antibiotic therapy, and suggests treatment scheduling could be improved by accounting for how densely packed cells interact physically rather than relying on biological factors alone.

UF Health researchers report that cancer diagnoses in the United States drop sharply during holiday periods, while outcomes for patients diagnosed around those dates are worse. The findings suggest holiday disruptions delay screenings and follow-up care, allowing cancers to be caught at later, harder-to-treat stages, and raise questions about how seasonal healthcare patterns affect patient survival.

Researchers, including Italy's National Institute for Nuclear Physics, report that theoretical physics methods have helped reveal how extra-chromosomal DNA behaves inside tumour cells. These circular DNA fragments, separate from chromosomes, are known to drive cancer growth and drug resistance. Applying physics-based modelling to their molecular mechanisms offers new insight that could inform future cancer research and treatment strategies.

Researchers publishing in Communications Biology report that deletions and regulatory disruption of the Y chromosome recur across cancers, suggesting loss of this chromosome may play a functional role in tumour development rather than being a harmless byproduct. The findings add to growing interest in how sex chromosome instability shapes cancer risk and progression in men.

Researchers report that a 'proliferative pause' — a dormant phase some cancer cells enter before spreading to the brain — may offer a critical window to intervene and stop brain metastasis before it begins. The finding could shape new strategies for preventing one of the deadliest complications of cancer, and is drawing attention from oncology and precision medicine communities.

Researchers report observing how an aggressive brain cancer physically remodels brain tissue as it grows, offering a live view of tumor progression. The findings shed light on how deadly brain tumors invade and distort surrounding structures, which could inform future treatment approaches. The work is drawing attention for its striking visualization of the disease's effects on the brain.

Coverage is circulating of the second part of a highlights roundup from the World Cancer Congress 2026, summarising key presentations and developments shared at the global oncology gathering. The roundup is aimed at cancer professionals and researchers following the congress remotely, distilling sessions into digestible takeaways. Interest centres on what new research, treatment approaches and policy discussions were featured at this year's event.

Researchers report that biological characteristics of prostate cancer tumours can help identify which patients are most likely to benefit from hormone therapy. The finding suggests tumour biology could be used to tailor treatment decisions rather than applying hormone therapy uniformly. Details of the study, including sample size and clinical impact, were not provided, but the work points toward more personalised prostate cancer care.

Mount Sinai has announced a collaborative research agreement to evaluate a novel liquid radioembolic agent for treating brain tumors. The therapy would deliver radiation directly to tumor tissue in liquid form, an approach being explored for cancers that are difficult to treat surgically. Details on the partner institution, trial design and timeline have not yet been released, and clinical results remain pending.

Volunteers and advocates with the American Cancer Society's Cancer Action Network visited Capitol Hill to meet with members of Congress, urging support for cancer research funding and patient-focused legislation. The advocacy day brings grassroots concerns about prevention, treatment access, and federal research investment directly to lawmakers, and is part of the organization's ongoing effort to keep cancer policy on the national legislative agenda.

A Nature study reports that the p53 protein, best known as a tumour suppressor, prevents chromothripsis — the shattering of chromosomes — by keeping transcription and DNA replication in balance. When p53 is missing or inactive, these processes collide, causing catastrophic genome damage that can drive cancer development. The finding links a classic cancer gene to a new mechanism of genome protection, and researchers say it may refine how tumour evolution and genome instability are understood.

New figures from the European Commission show that 5% of Europeans consumed alcohol every day in 2025. The statistic highlights that despite overall declines in drinking across much of the continent, a small but notable share of the population still drinks daily, a pattern linked in public health research to higher risks of liver disease, cancer and other harms. Health advocates are likely to use the data in ongoing debates over alcohol pricing, advertising and labelling rules across EU member states.

The Trump administration has committed more than $5 billion to a program called the Genesis Mission, aimed at advancing cancer research, semiconductor development, and quantum computing. The initiative signals a major federal investment in strategic technologies, combining health science goals with industrial policy on chips and next-generation computing capabilities.

Researchers have documented recurrent deletions and regulatory disruption of the Y chromosome across cancer types, according to a study published in Nature. The work suggests loss or alteration of Y chromosome genetic material may play a functional role in tumour development rather than being incidental, opening questions about how such changes influence cancer biology and potential sex-based differences in disease.