Girls are starting puberty one year earlier than in 1970s and obesity could be to blame, study finds – The Independent


Posted: February 13, 2020 at 8:43 pm

Girls are starting puberty almost one year earlier than 40 years ago, new research suggests.

According to the NHS, puberty tends to begin between eight and 13 years in girls and nine and 14 years for boys.

However, a new study has found that puberty in girls has shifted approximately three months earlier per decade since the 1970s.

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Researchers from the University of Copenhagen assessed data from 38 studies involving tens of thousands of girls from around the world.

Each study examined when the development of glandular breast tissue which is known in medical terms as thelarche and is a key marker of the onset of puberty began to take place.

Dr Alexander Busch, the co-author of the research, said the work was the first to bring together and analyse studies focusing on thelarche.

Busch added that the team decided against looking at the age of first menstruation, or menarche, as a marker of the onset of puberty because it often relies on participants recalling when their periods began and can beginlater than other developments.

Writing in the journal Jama Pediatrics, Busch and colleagues said they examined data from 38 studies which involved expert assessment of girls breast tissue.

Research looking at children with certain diseases, or who were severely malnourished or pathologically obese was excluded because these conditions can be known to affect the onset of puberty.

The team reported that development of glandular breast tissue varied around the world and over time, with studies finding an average age of onset between 9.8 and 10.8 years in Europe, compared with 10.1 to 13.2 years in Africa and 8.8 to 10.3 years in the US.

The teams analysis also suggested that the age at which puberty begins is getting younger, with onset starting 0.24 years earlier per decade from 1977 to 2013.

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AFP/Getty Images

One of the lessons that I grew up with was to always stay true to yourself and never let what somebody else says distract you from your goals. And so when I hear about negative and false attacks, I really dont invest any energy in them, because I know who I am.

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You are the sum total of everything you've ever seen, heard, eaten, smelled, been told, forgot - it's all there. Everything influences each of us, and because of that I try to make sure that my experiences are positive.

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Be able to delegate, because there are some things that you just cant do by yourself.

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Rex Features

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Getty

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Getty

For me, life is about being positive and hopeful, choosing to be joyful, choosing to be encouraging, choosing to be empowering.

Getty

It's your outlook on life that counts. If you take yourself lightly and don't take yourself too seriously, pretty soon you can find the humor in our everyday lives. And sometimes it can be a lifesaver.

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"Life is very interesting in the end, some of your greatest pains, become your greatest strengths.

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Girls are starting puberty one year earlier than in 1970s and obesity could be to blame, study finds - The Independent

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