Skip to content

Teen Girls' Health

Teen Girls' Guide to Teen Boys

The physical and emotional changes teen guys go through.
Font Size
A
A
A
By
WebMD Feature

You may be noticing guys more often than when you were a kid.

Understanding boys can be tricky. So here’s the inside scoop on what teen guys go through.

Recommended Related to Teen Girls

Suffering is Out: What You Can Do

  Even in normal periods, your monthly cycle can affect a lot more than your uterus and vagina. Some symptoms are easy to explain. Cramps, for instance, happen because your uterus contracts when it sheds its lining (called the endometrium)—similar to the way it contracts during labor. No wonder it hurts. It’s like giving birth! As for all those other symptoms, researchers don’t have the ultimate answer. They do think that fluctuating hormone levels (specifically, estrogen and progesterone) and...

Read the Suffering is Out: What You Can Do article > >

Physical Changes

Boys usually begin puberty between the ages of 10 and 15. That's two years later than most girls.

Starting at about age 12 or 13, and as early as 9, hormones called androgens bring on a number of physical changes, says Lori Legano, MD, assistant professor of pediatrics at New York University and attending physician for the adolescent clinic at New York's Bellevue Hospital Center.

One of the first things guys start to notice is that their testicles and scrotum (the sac located underneath the penis) start to get larger. Their penis gets longer and wider and pubic hair begins to grow in, too.

Legano says male hormones are the reason for a number of other changes. Maybe you’ve noticed some of these developments in the boys you know:

  • Hair has started to grow on their faces.
  • Hair under the arms starts to show up.
  • Body odor becomes an issue. 

Height Gap

Guys and girls have different timelines when it comes to puberty.

It breaks down like this:

Girls grow very fast (this could start as young as age 8), get their periods, their growth plates fuse, and they stop growing. Puberty over.

Boys, on the other hand, take their sweet time. They may not have a major growth spurt until age 15 or 16, and they sometimes keep growing into their early 20s.

That’s why around the 8th grade you have taller girls and smaller boys.

 “Boys are slow to grow but then they catch up later,” Legano says.

Today on WebMD

Teen BMI Calculator
fitTool
teen girl with lotion on face
Slideshow
 
dancing
fitArticle
Young couple holding hands
Quiz
 
Blemish Blasters Tips For Acne Free Skin
Slideshow
teen girl on swing
Quiz
 
Abused woman
Article
Taylor Swift
fitSlideshow
 
The Pill Myths And Facts
Article
Hair illustration
New
 
teen sleeping
fitArticle
Eye make-up closeup
Quiz