Estonian Biobank analysis of more than 67,000 adults challenges assumptions about age and desire, finding men's peak does not align with expected testosterone decline patterns.
Researchers evaluate associations between shingles vaccination and biomarker-based measures of inflammation, immune function, and molecular aging in older adults.
HHS Secretary Robert F. Kennedy Jr.’s changes at the CDC are prompting states and medical societies to issue independent vaccine recommendations, challenging long-standing national immunization policy.