{"id":2445,"date":"2017-05-25T14:59:10","date_gmt":"2017-05-25T04:59:10","guid":{"rendered":"https:\/\/adolescentsourfuture.com\/?p=2445"},"modified":"2022-02-24T15:16:20","modified_gmt":"2022-02-24T04:16:20","slug":"poor-kids-hit-puberty-sooner","status":"publish","type":"post","link":"https:\/\/adolescentsourfuture.com\/poor-kids-hit-puberty-sooner\/","title":{"rendered":"Poor kids hit puberty sooner"},"content":{"rendered":"\t\t
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Poor kids hit puberty sooner and risk a lifetime of health\u00a0problems<\/strong><\/span><\/h1>

Shape-shifting bodies. Cracking voices. Hairs sprouting in new places. Puberty marks a dramatic period of change for young people. New research shows children who grow up in poor homes enter puberty early.<\/p>

Not only do they experience more emotional, behavioural and social problems compared to their peers, early puberty puts them at risk of a range of health issues for the rest of their lives.<\/p>

The research, published yesterday in the journal Pediatrics<\/a>, adds to a body of work showing the cumulative effect of adversity in childhood can have lifelong physical, mental and behavioural repercussions.\u00a0However, the reason why these disadvantaged children enter puberty early remains unclear. And work is continuing to pinpoint factors that trigger the cascade of hormones that mark this critical period of development.<\/p>

What is puberty?<\/span><\/h2>

Puberty is an inherently awkward transition in which a child\u2019s body matures to allow reproduction.\u00a0In girls, it typically begins with breast development between the ages of eight and 13 and ends with menarche, or the first period. In boys, puberty begins between ages nine and 14, on average, starting with growth of the sexual organs and wrapping up with facial hair and a deepened voice.<\/p>

<\/figcaption><\/figure>

But changes at puberty are not all physical. Puberty also triggers rapid biological and social change, and increasing risk for psychological health problems<\/a>, like depression and anxiety, substance use and abuse, self-harm and eating disorders.<\/p>

We still don\u2019t know exactly what triggers the cascade of hormone secretions that, over time, produces these tell-tale changes. And \u201cWhat triggers puberty?\u201d was one of the 125 questions posed in Science magazine\u2019s 125th anniversary edition in 2005 that still remains unanswered today.<\/p>

In particular, we still don\u2019t know exactly what causes<\/em> some children to enter puberty earlier than others, although there have been many factors linked<\/em> to early puberty.\u00a0These include childhood obesity, being born small for gestational age and exposure to environmental chemicals. Other researchers have linked early puberty with living with a stepfather or having experienced stressful life events, such as childhood maltreatment and abuse.<\/p>

What we did<\/span><\/h2>

Previous studies looking into social impacts on the timing of puberty have had mixed results. While one Indian study found poor girls started their periods later than normal<\/a>, a UK study found girls who grew up the poorest were twice as likely to have started their periods earlier<\/a> than the richest.<\/p>

So, we carried out the first study of its kind in Australia to see how cumulative exposure to social disadvantage affected the age children entered puberty.\u00a0We asked parents of 3,700 children in the Growing Up in Australia Study<\/a> to report signs of their children\u2019s puberty at age eight to nine, and then again at ten to 11. Signs included: a growth spurt, pubic hair and skin changes; breast growth and menstruation in girls; and voice deepening and facial hair in boys.<\/p>

We then compared the family\u2019s socioeconomic position \u2013 as measured by their parent\u2019s annual income, education and employment \u2013 of those who started puberty early with others who started on time.<\/p>

At ten to 11 years old, about 19% of boys and 21% of girls were classified in the early puberty group. In other words, they had entered puberty earlier compared to their counterparts.<\/p>

Boys from very disadvantaged homes had a four-fold increase in the rate of early puberty, while girls\u2019 risk increased nearly two-fold compared with kids that came from the richest families.<\/p>

How could this happen?<\/span><\/h2>

Research on the biology of stress<\/a> shows how major adversity, like extreme poverty, can permanently set the body\u2019s stress response to high alert, affecting the brain\u2019s circuits. This might, in turn, influence how reproductive hormones are regulated, so affecting the timing and trajectory of puberty.<\/p>

Another body of research suggests<\/a> the social environment can influence so-called epigenetic changes in our genes. These changes might affect the regulation of genes involved in reproductive development, switching some on or off sooner than usual.<\/p>

Another theory<\/a> is that in the face of hardship \u2013 for instance, economic disadvantage, harsh physical environment, the absence of a father \u2013 children may be programmed to start the reproductive process earlier to ensure their genes are passed on to the next generation.<\/p>

Yet, we still don\u2019t know exactly how poverty or disadvantage triggers early puberty.<\/p>

Why this matters<\/span><\/h2>

What we do know, however, is early puberty is linked with a range of health issues<\/a>.\u00a0For instance, in girls, it\u2019s linked with emotional, behavioural and social problems during adolescence including: depressive disorders, substance disorders, eating disorders and earlier-than-usual displays of sexuality.<\/p>

Early puberty also affects people\u2019s health far beyond their teenage years. It places them at a greater risk of developing obesity, reproductive cancers and cardiometabolic diseases (diabetes, heart disease or stroke) in later life.<\/p>

Written by\u00a0Associate Professor Ying Sun<\/p>

This article was originally posted on The Conversation<\/a>.<\/p>

The lead author on the study is Associate Professor Ying Sun, a visiting researcher at The Centre for Adolescent Health<\/a>, Murdoch Children’s Research Institute (MCRI) based at Anhui Medical University, China. The other co-authors are Commissioners\u00a0Prof George Patton<\/a>, Dr Peter Azzopardi<\/a>, as well as Professor Melissa Wake, and Dr Fiona Mensah.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

A major Australian study of almost 3,700 children has found that social and economic disadvantage can be a trigger for the early onset of puberty, putting disadvantaged children at higher risk of a host of associated future health problems.<\/p>\n","protected":false},"author":5,"featured_media":2448,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2445","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/posts\/2445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/comments?post=2445"}],"version-history":[{"count":6,"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/posts\/2445\/revisions"}],"predecessor-version":[{"id":5686,"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/posts\/2445\/revisions\/5686"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/media\/2448"}],"wp:attachment":[{"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/media?parent=2445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/categories?post=2445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adolescentsourfuture.com\/wp-json\/wp\/v2\/tags?post=2445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}