MedicineFebruary 5, 2026
Menstrual blood can be used to detect HPV, hinting at broader uses
A new study shows that blood collected on a sanitary pad can be used for cervical cancer screening, opening the door to new diagnostics
Stories by Christina Szalinski
Christina Szalinski is a freelance science writer who covers life sciences and health. She is based near Philadelphia.
December 8, 2025
A Vitamin Shot Given at Birth Prevents Lethal Brain Bleeds, but More Parents Are Opting Out
Vitamin K injections have prevented deadly brain bleeds in infants for more than 60 years. New research shows refusal rates have recently jumped nearly 80 percent
BiotechMay 22, 2024
This Start-Up Wants You to Put Custom Bacteria on Your Teeth
Lumina Probiotic has said a genetically modified microbe could prevent cavities. Experts, though, have safety concerns
ReproductionJune 1, 2023
Are Sperm Counts Really Declining?
Some studies have found marked drops in sperm count, whereas others have not, and it’s surprisingly hard to measure
PharmaceuticalsSeptember 29, 2021
Fringe Doctors’ Groups Promote Ivermectin for COVID despite a Lack of Evidence
The organizations touting unproved protocols for the antiparasitic drug may be harming vaccination efforts