Relationship information
An age difference cannot determine compatibility, abuse risk, consent, maturity or future success. Relationship guides are general educational content.
Legal information
The website does not determine legal age, age of consent, marriage eligibility, employment eligibility or any other legal status. Laws differ by location and facts. Consult a qualified local professional or authority.
Medical and fertility information
Any mention of health, aging, fertility or caregiving is general context and is not medical advice.
Official submissions
For government forms, immigration, insurance, school, sports or employment, verify the required age-calculation convention with the requesting authority.
External research
Research summaries may become outdated as datasets and publications change. Check the linked primary source and publication date.