Puberty Blockers are usually prescribed at around 13-14, which is when Tanner State 4 & occasionally Tanner State 5 which are the last stages of puberty, there is no reason to "block puberty" for a teenager who is almost completely developed.
" Overview
Professor James M. Tanner, a child development expert, was the first to identify the visible stages of puberty. Today, these stages are known as the Tanner stages or, more appropriately, sexual maturity ratings. They serve as a general guide to physical development, although each person has a different puberty timetable.
Read on to learn about the Tanner stages and what you can expect to see in boys and girls during each stage.
Tanner stage 1 describes a child’s appearance before any physical signs of puberty appear. Toward the end of stage 1, the brain is just starting to send signals to the body to prepare for changes.
The hypothalamus begins to release gonadotropin-releasing hormone (GnRH). GnRH travels to the pituitary gland, which is the small area under the brain that makes hormones that control other glands in the body.
The pituitary gland also makes two other hormones: luteinizing hormone (LH) and follicle-stimulating hormone (FSH).
These early signals typically start after a girl’s 8th birthday and after a boy’s 9th or 10th birthday. There aren’t any noticeable physical changes for boys or girls at this stage.
In boys, puberty usually starts around age 11. The testicles and skin around the testicles (scrotum) begin to get bigger. Also, early stages of pubic hair forms on the base of the penis.
Physical changes are becoming more obvious.
Physical changes in boys usually start around age 13. These changes include:
Puberty is in full swing during stage 4. Both boys and girls are noticing many changes.
In boys, stage 4 usually starts around age 14. Changes include:
Boys
In boys, stage 5 usually starts around age 15. Changes include: