Puberty Question
What is the average age for a male's reproductive organs to begin developing?
Answer:that can vary due to many factors...
Tanner Stage 1 (Prepubertal)
Height increases at basal rate: 5-6 cm/year
Testes Smaller than 4 ml or long axis <2.5 cm
Pubic Hair No coarse, pigmented hair
Penis Stage No growth
Tanner Stage 2
Height increases at basal rate: 5-6 cm/year
Testes Size 4 ml or long axis 2.5 to 3.2 cm
Age 11.5 years (age 9.5 to 13.5 years)
Pubic Hair Minimal coarse, pigmented hair at base of penis
Age 12.0 years (age 9.9 to 14.0 years)
Penis Stage Earliest increased length and width
Age 11.5 years (age 10.5-14.5 years)
Tanner Stage 3
Height increases at accelerated rate: 7-8 cm/year
Testes Size 12 ml or long axis 3.6 cm
Age 14.0 years (11.5-16.5 years)
Pubic Hair Coarse, dark curly hair spread over the pubis
Age 13.1 years (11.2-15.0 years)
Penis Stage Increased length and width
Age 12.4 years (10.1-14.6 years)
Other Changes Voice breaks (age 13.5 years) Muscle mass increases
Tanner Stage 4
Height increases at peak rate: 10 cm/year (age 13.8)
Pubic Hair Hair of adult quality
Not spread to junction of medial thigh with perineum
Age 13.9 years (12.0-15.8 years)
Penis Continued growth in length and width
Age 13.2 years (11.2-15.3 years)