BMI development and early adolescent psychosocial well-being

Research looking at how and when children become overweight is helping to shed new light on ongoing efforts by the Government and others to tackle the childhood obesity epidemic.

A team of researchers at the ESRC International Centre for Lifecourse Studies at UCL has also been asking whether children who are overweight are more likely to go on to smoke and drink alcohol and if their mental health suffers as they become adolescents.

The research, published in Pediatrics, shows clearly that when it comes to the likelihood of a child becoming overweight or obese in the first decade of their life, there are many more influences than just sugar (a main plank in the Government’s Childhood Obesity Strategy).

The research also shows that  influences are at play in families even before children are born and indicates that helping pregnant women to stop smoking and maintain a healthy weight, making sure all young children have healthy eating and sleeping routines may be key, together with targeted support for ethnic and social groups identified as being most at risk.

Lead researcher, Yvonne Kelly presented the findings at the Society for Longitudinal and Life Course Studies 2016 conference in Bamberg.

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Never too early, never too late

n2en2l_620x877The research team at the ESRC International Centre for Lifecourse Studies at UCL has produced a plain English booklet summarising some of its recent research and what can be learned from it in respect of living as long and as healthy and happy a life as possible.

Never too early, never too late shares a number of important research findings from research making use of longitudinal surveys such as the British Birth Cohort Studies and the UK Household Longitudinal Study.

 

The free booklet explains why it’s so important to take a life course approach  to research and the benefits off looking at how our social and material circumstances and our biology intertwine to impact on our health and happiness over time.

Issues covered include mental health, obesity, stress and its links to chronic illnesses such as cancer and heart and lung disease,  cancer, diabetes and dementia.

Further information

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Early puberty: a question of background?

New research examining the connections between early puberty in girls and their socioeconomic and ethnic backgrounds is being presented to an international audience of researchers in Germany today.

Early puberty in 11-year-old girls: Millennium Cohort Study findings is work led by Child of our Time editor Yvonne Kelly using information on 5,839 girls from the Millennium Cohort Study.

The findings, presented at the Society for Longitudinal and Life Course Studies 2016 conference in Bamberg indicate clearly that socioeconomic and ethnic disparities are apparent in the UK and are important for all those interested in the short and long term implications for early puberty on women’s health and well being.

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Girls growing up – questions of early puberty

The early onset of puberty in girls has been linked with better bone health in older women, but it is also associated with a host of negative outcomes including teenage pregnancy and serious ill health in mid-life. With girls over the last few decades starting their periods earlier and earlier, this is a real cause for concern. A better understanding is needed of who is affected and how if this trend is to be reversed and the long-term health of girls and women is to be secured. Researchers at the ESRC International Centre for Lifecourse Studies at UCL have investigated whether a girl’s socioeconomic background or ethnicity are associated with early puberty and have looked in detail at more commonly supposed links with weight and stress. Yvonne Kelly explains more.

Sexual activity whilst still young, teenage pregnancy, mental health problems, heart disease and breast cancer later in life are just some of the things linked to early puberty in girls. Over the last few decades, girls have started their periods much earlier with the average age falling from puberty has age falling to 12.9 years in 2015.

This research is the first to look over time at whether and how a girl’s social and economic circumstances and her ethnicity might be linked to the early onset of puberty. We suspected that any link that did emerge would, most likely, be explained away by other factors such as being overweight or suffering from stress.

Using information on 5,839 girls from the Millennium Cohort Study, which has been tracking the lives of nearly 20,000 children born at or around the start of the century, it was possible to know, at age 11 whether they had started their period or not.

Details of their birth weight, ethnicity, family income when they were aged 5 and height and weight when they were 7 were also available. This rich information gathered across 11 years of the girls’ lives really enabled us to put together a detailed picture over time of how these factors come together to influence the early onset of puberty.

The girls’ mothers completed questionnaires any social or emotional problems their daughter might be facing, and their own mental health.

Puberty facts and figures

Nearly one in ten of the girls, a total of 550, had started their period at age 11, with girls from the poorest families twice as likely as their most well-off peers to have done so (14.1 per cent v 6.8 per cent). Those from the second poorest group were also nearly twice as likely to have started their period.

Indian, Bangladeshi and Black African girls were most likely to have started their period at age 11, with Indian girls three and a half times more likely than their White counterparts to have done so.

Other factors

On average, girls who were heavier at age 7 and suffered stress in early childhood were more likely to have begun menstruating. Those who had started their periods early also tended to have mothers with higher stress levels, were from single parent families, and tended to have had some social and emotional difficulties themselves.

However, even when we took all these things into account, girls from the poorest and second poorest groups were still one and a half times more likely to have started their periods early.

As far as ethnicity was concerned, income, excess body weight and stress accounted for part or all of the differences in most cases. Interestingly, though with most Indian girls coming from more advantaged backgrounds than their White peers, the likelihood of them having started their period was not explained after we took all the above factors into account.

Lived experiences

Our findings highlight the different lived experiences of ethnic minority groups in the UK: for example Indians are relatively advantaged whereas Pakistanis tend to be materially disadvantaged, Bangladeshis and Black Africans are materially and psychosocially disadvantaged and have a tendency to be overweight compared with the majority ethnic group. They also demonstrate the complex and potentially opposing factors at play for the onset of puberty.

All that considered, we can say with considerable confidence that socioeconomic and ethnic disparities are indeed apparent in the UK. Given the short and long term implications for early puberty on women’s health and well being, improving our understanding of these underlying processes could help identify opportunities for interventions with benefits right across the lifecourse, not just for the girls in our study, but for future generations.

It was also encouraging to note that in the decade or so covered by the data we used, there appears to have been no further decline in the average age that girls begin puberty.

Early puberty in 11-year-old girls: Millennium Cohort Study findings is research by Yvonne Kelly, Afshin Zilanawala, Amanda Sacker, Robert Hiatt andRussell Viner and is published in Archives of Disease in Childhood.

Photo credit: Afla

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Young drinkers: using evidence to prevent alcohol abuse

Research by Child of our Time Editor Yvonne Kelly on 11 year-old drinking has caught the eye of Mentor, a charity working to build resilience among young people to prevent alcohol and drug misuse. The charity’s CEO, Michael O’Toole is now looking to collaborate with Yvonne in future research that will take a look a first look at data from the Millennium Cohort Study in the Autumn. In this episode of the Child of our Time podcast, Michael explains what Mentor is doing, why research based evidence is so important to the charity and how he hopes it will help prevent alcohol abuse among young children in the future.

Photo credit: Joseph Choi

 

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Alcohol – who is drinking or drunk age 11?

Child of our Time editor, Professor Yvonne Kelly was among a group of experts looking at drinking behaviour across the life course this week. She presented her recent thought-provoking work on 11 year-olds and drinking at a seminar for policy makers and third sector workers on alcohol and health,  organised by the ESRC International Centre for Lifecourse Studies at UCL.

The talk shared findings from her research on 11 year-olds in the Millennium Cohort Study who had ever drunk alcohol or been drunk. It also explored links with a range of family and social factors including other risky behaviours such as smoking and truancy.

Listen to her talk and see her slides.

Drunkenness and heavy drinking among 11 year olds – Findings from the UK Millennium Cohort Study is research by Yvonne Kelly, Annie Britton, Noriko Cable, Amanda Sacker and Richard G. Watt

What influences 11-year-olds to drink? Findings from the Millennium Cohort Study is research by Yvonne Kelly, Alice Goisis, Amanda Sacker, Noriko Cable, Richard G Watt and Annie Britton and is published in BMC Public Health.

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Mixed race kids: happier than we might think!

It’s been said and shown over the last few decades that mixed race and mixed ethnicity children tend not to do as well socially and emotionally as their non mixed peers. But new research casts a rather different light on the matter, showing that children both in the UK and US who are from mixed backgrounds are actually doing rather better.  James Nazroo from the University of Manchester has been looking at the issue with colleagues at the ESRC International Centre for Lifecourse Studies, UCL and discusses his surprising findings in our latest podcast episode.

Socioemotional wellbeing among mixed race/ethnicity children in the UK and US: Patterns and underlying mechanisms is due to be published in the Journal of Health and Social Behaviour. It is part of a wider programme of ESRC funded research led by Child of Our Time editor, Yvonne Kelly at ICLS.

Photo credit: Philippe Put

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Being drunk – aged 11

Better understanding why very young people start drinking has been a recent focus for the team at the ESRC International Centre for Lifecourse Studies at UCL. Research published earlier this year by the team showed that one in seven 11 year-olds said they had drunk alcohol and indicated strong ties with having friends who drank and also mums who drank. Now the researchers, led by Yvonne Kelly, have taken the work a step further to see which 11 year-olds are binge drinking or getting drunk. The work will be presented next month at an event  for those interested in the links between alcohol and health. 

Young people who drink heavily do worse at school, are more likely to engage in other risky behaviours such as smoking and taking drugs and die earlier than their non drinking peers. That’s been shown. But when we talk about young people, we are mostly referring to people in their late teens and early 20s.

There has been little research looking at drinking among very young adolescents, nor has much been done to look at what factors influence heavy drinking in our children and young people.

Closing the evidence gap

Our work using the Millennium Cohort Study has gone some way to closing that gap in the evidence we need to help us gain a clearer picture of just who is drinking alcohol at a very young age and what might be behind that.

Having looked at how widespread the problem might be, how family and friends fit into the picture and how 11 year-olds perceive the risks, we wanted to dig a little more deeply and focus more closely on the group of children who are binge drinking and getting drunk.

With a study as large as the Millennium Cohort Study, we have detailed information on more than 11,000 children. This means we can look at the individual and family factors connected to the issue in a meaningful and robust way.

It was reassuring to find that only 1.2 per cent (around 120) of 11 year-olds in the study reported having been drunk, with 0.6 per cent (60) of them saying they had drunk 5 or more alcoholic drinks in a single episode.

Many would argue though, that, given the serious health consequences associated with drinking at a young age, the fact that one in every hundred of UK 11 year-olds has been drunk at some point is still a matter of considerable concern.

Who is drunk at 11?

So who amongst our 11 year-old children is getting drunk? Our analysis showed that boys were twice as likely as girls to report being drunk, as were children with social and emotional problems. Truanting children were six times more likely and smokers 15 times more likely to report heavy drinking.

Interesting to us was the fact that neither mum’s nor dad’s drinking seemed to have any influence here. This was interesting in its own right, but also because our earlier research showed quite a strong link between 11 year-olds who drank any alcohol at all and mums who drank moderately or heavily. Heavy drinking was, however, reported by children who said they did not have a close relationship with their mum.

A link that did stay strong as we dug further into this question of who drinks heavily and gets drunk, was that with friends who drank. In other words, children who had friends who drank alcohol were 5 times more likely to get drunk themselves than those children who did not have drinking friends.

Perception of risk

The children we looked at were considerably less likely to get drunk if they believed strongly that drinking 1-2 alcoholic drinks each day could be harmful. So, a heightened perception of the potential harms of drinking alcohol were key here.

Our findings seem to mirror those of a recent school-based survey of 11-13 year olds in the UK, which reported 0.4 per cent had binge drunk. They also seem to point to the fact that heavy drinking in this age group is most likely to occur in peer group settings.

As the Millennium Cohort Study continues to track these children in years to come, we will gain an even clearer understanding of the consequences of heavy drinking at such a young age.

For all those concerned with the health and wellbeing of children today and in the future, there are some pointers here about areas for focus in tackling the problem including helping children understand the potential harms and empowering them to say no to alcohol regardless of any putative benefits they or their friends might perceive.

Request an invitation to the Alcohol and Health policy seminar which takes place on June 21, 2016.

Photo credit: Thom Sanders

 

 

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Born in Bradford

Born in Bradford is a fascinating child health development project following the lives of thousands of children in the city. It hopes to find out more about the causes of childhood illness by studying children from all cultures and backgrounds as their lives unfold.

In this Child of our Time Podcast episode, one of the project’s lead researchers, Professor Kate Pickett from the University of York, explains more about the study, what’s in it that researchers can use, what  it’s found so far and what we can expect to come out of it in the future.

Photo credit: Tim Green

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A bedtime story

Reading is key to giving children the best possible start in life. That’s what Child of our Time Editor Professor Yvonne Kelly will be telling representatives of the Swedish Government and European Commission today when she delivers the key note presentation at a seminar highlighting the importance and benefits of early interventions in children’s lives.

The seminar in Brussels has been organised by the City of Gothenburg in Sweden as part of its efforts to achieve the political goal of becoming an equal city and of its commitment to reduce inequalities.

Yvonne will be sharing research by herself and colleagues at the ESRC International Centre for Lifecourse Studies looking at factors associated with children’s poor verbal skills and behaviour problems. The research shows the links between regular bedtimes and reading with children and better outcomes for them in terms of behaviour and how well they get on at school.

Organisers of the event hope their efforts will encourage other cities in Europe to join them in their ambition to create health equality and a good start in life for all.

Photo credit: Lars Plougmann

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