Y
- Y linkageTraits produced by genes located on the Y chromosome
- Y-linked deafness, type 1Y-linked deafness, type 1 is a very rare type of hereditary non-syndromic deafness charact
- Yellow fever vaccineVaccine that protects against yellow fever
- Yoga as exercisePhysical activity consisting mainly of yoga poses
- Yorùbá medicineSystem of herbalism
- Young blood transfusionExperimental therapy
- Youth suicideSuicide of a young person