Skip Nav
18 Sex-Filled Films to Stream on Netflix
31 NC-17 Movies That Are Basically Porn With a Plot
37 Tiny Tattoos For Big-Time Besties

Brothers Keep Sisters From Growing Up Too Fast

Sisters can make you happier, and now researchers say brothers can keep you young. Girls with brothers don't grow up as fast as their bro-less peers — and it's not just the protective older brother factor. While older brothers delay the onset of menstruation by nearly a year, having a younger brother will postpone your first sexual experience by more than a year, according to the new Australian study.

So why do brothers have such a powerful impact? The study explains that older male siblings may take up parental resources or cause psychological stress that delays the onset of puberty. And when older sisters have to help take care of their little brothers it delays their behavioral maturation, pushing back the age that they'll lose their virginity.

If you were a late bloomer, did you also happen to have a brother? Do you think he had anything to do with it?

Image Source: Shutterstock
Skeptic52 Skeptic52 7 years
I have two younger brothers (1 close in age that I actually grew up with for a long time) and I can say he DEFINITELY caused me to have to grow up way faster than I should have. He was soooo spoiled and became such a BRAT that he caused TONS of trouble. Teachers and police had the phone ringing off the hook. He took up so much of my parents' attention and resources that they were super tough on me. There literally wasn't the time or money left for me to get in trouble or go my own path, so they had ridiculous, perfection expectations of me. They were too busy with him for me, and he ate it up. I eventually got sent to live with a grandparent and grew up and went my own way in life, but there was never time for me to be a kid.
SMRster SMRster 7 years
It's funny because for me the opposite is true. I have an older brother and I started my period at the normal age period, but I lost my virginity way late (last year, at age 23). So this study doesn't make any sense to me.
Rjs-baby-girl Rjs-baby-girl 7 years
I have a brother 2 years younger than me and I was not a late bloomer. He is the kind of brother who got along well with my bfs back in the days, especially with one of them. After I broke up with that guy who didn't take it very well, my brother got mad at me for leaving him! It's ok now cuz he gets along very well with my husband and gave him the "brother talk" before the wedding lol!
tidakpedulidengananda tidakpedulidengananda 7 years
Have brothers and still had sex relatively young. Ha! But my bros are very protective not pre-relationship, the post-relationship, they won't hesitate to act if the ex was trying to mess with me, but hey, this was high school time. So juvenile anyway
Venus1 Venus1 7 years
I only have a sister. But when I was a school I sadly had a friend who no boy would with because they were frightened of what her brother would do to them if he found out.
postmodernsleaze postmodernsleaze 7 years
Late bloomer here with a younger brother (although not much younger, so we've always been confused as twins)! I'm glad he's younger because I've heard of older brothers being insanely protective of their little sisters and scaring suitors away.
bryseana bryseana 7 years
My older brother definitely stressed me out growing up. I wasn't able to leave the house without his approval of what I was wearing. And makeup was out of the question. He was stricter than my dad.
chillchic chillchic 7 years
I was a late bloomer and I have a younger brother. I don't see how it can be related since we're only a year apart and I didn't need to take care of him.
GlowingMoon GlowingMoon 7 years
I think there is some truth to this. Personally, I've dealt with women who had brothers, and they seemed "delayed" as far as growing up. These women are in their 30's (married with children), and they still refer to themselves as the "baby sister," AND they assume that posture in the world. It's odd.
amber512 amber512 7 years
I saved it for marriage and I have a younger brother. Are the two related? I wouldn't think so. I think it had more to do with my own personal beliefs and convictions.
Pistil Pistil 7 years
I have a younger brother and I was a late bloomer. As if he hadn't intentionally annoyed me enough as a child, he was doing it biologically as well!
Gdeeaz Gdeeaz 7 years
I have an older brother and I wasn't a late bloomer. I actually think I grew up quicker then I should have. I think studies like this are interesting, but when they only interview 273 people from one location I can't take the studies seriously.
Girl-Jen Girl-Jen 7 years
I have a twin brother and a little brother, hit puberty at 13 and first had sex at 17. Had I not known how annoying guys can be, I probably would have been more curious about sex and boyfriends. But I knew that while there are some wonderful things about guys, there are also all the dick jokes and stupidity-induced traumatic injuries and the foot-in-mouth moments to contend with. Besides, with two brothers badgering me to go ride bikes, who has time to put on makeup and talk about crushes?
bengalspice bengalspice 7 years
Um, hellz no. I still baby my brother, but he had nothing to do with delays of any kind in my life. The only thing he can be blamed for us reminding me how to be a kid at heart.
chloe-bella chloe-bella 7 years
It's funny how, at first glance, I thought this was going to be a positive article, but then I saw the reasons why they believe older brothers have this effect. It's kind of sad if older brothers actually cause so much psychological stress to their younger sisters that it has a measurable physiological impact.
Reactions to Claire and Jamie's Outlander Sex Scene
Sexiest Halloween Music
Sexy Couples Halloween Costumes
Sexy Superhero Costumes For Women
From Our Partners
Latest Love
All the Latest From Ryan Reynolds