Longevity & screening · Prostate healthListed October 26, 2026
Low-risk prostate cancer is being found less often, and radiation for it has fallen sharply
Researchers analyzed three data sets of localized prostate cancer: the national SEER cancer registry (2010–2023), Veterans Affairs records (2010–2024), and MROQC, a radiation oncology quality registry (2021–2025). They defined low-risk disease as grade group 1, PSA under 10 ng/mL, and stage T2a or lower. The share of newly diagnosed cancers that were low-risk fell from 28.8% to 24.0% in SEER and from 32.3% to 21.9% in the VA. Among men diagnosed with low-risk disease, the share who had neither radiation nor surgery rose from 33.6% to 83.4% in SEER and from 51.6% to 96.3% in the VA. Among 207,196 men treated with radiation, the share who had low-risk disease fell from 33.7% to 6.5% in SEER and from 22.9% to 2.0% in the VA. The authors read this as a nationwide shift toward active surveillance. The paper is in Cancer (volume 132, issue 21, dated November 1, 2026) and was listed on PubMed on October 26, 2026.
The limits matter. This is a registry and records analysis. It shows what happened to groups of patients, not whether any one man's choice was right, and it does not measure long-term outcomes. We read the abstract only.
What it means for youFinding a slow-growing prostate cancer does not always mean treating it right away; watching it closely with repeat tests is now the usual approach for low-risk disease. That is a conversation to have with your doctor, who can explain your own results. Whether and when to get a PSA test is also a decision to make with your doctor.
Sources: Cancer (DOI) · PubMed record · Related: Cancer screening · Prostate health guide
Male fertilityOctober 21, 2026
Two water-disinfection byproducts in urine linked to a higher risk of low sperm motility
Researchers at Tongji Medical College in Wuhan, China, compared 135 men with asthenozoospermia (a semen condition in which too few sperm move well) with 270 age-matched men without it. All were men receiving assisted reproductive treatment. They measured two haloacetic acids, trichloroacetic acid and dichloroacetic acid, in urine; these form when drinking water is disinfected with chlorine. Men in the highest quarter of each had about twice the odds of asthenozoospermia compared with the lowest quarter (dichloroacetic acid: odds ratio 2.05, 95% CI 1.10 to 3.83; trichloroacetic acid: 2.13, 95% CI 1.11 to 4.09). Men with high levels of both had an odds ratio of 2.62 (95% CI 1.48 to 4.69). The study was published online October 21, 2026 in the Journal of Exposure Science & Environmental Epidemiology.
The limits matter. This is a single case-control study of men already seeking fertility treatment, so the findings may not apply to other men. It shows an association, not that these chemicals caused the problem, and urine levels reflect recent exposure from many sources, not only tap water. The confidence intervals are wide. We read the abstract only.
What it means for youThis is early research and gives no reason to change how you drink water. If you and a partner are trying to conceive and have not succeeded after a year, or you have other concerns, a semen analysis and a visit with a doctor are the standard first steps. Testosterone therapy can lower sperm production, so tell any prescriber if you want children.
Sources: J Expo Sci Environ Epidemiol (DOI) · PubMed record · Related: TRT and fertility · Male fertility guide