(An item from the ISHN Member information service)  A letter/article in Issue #11, 2015 of Public Health Nutrition makes a good point in response to an earlier article suggesting that BMI should be replaced as a measure of obesity by the time it takes a child to run 500 meters. The argument is made well by differentiating "fitness" from "fatness". The physical fitness to run that distance is quite a different construct than a simplistic height/weight ration such as BMI. Further, there are more sophisticated measures of body fat (waist circumference, waist to to height ratio and abdominal fat etc) that can replace BMI if needed. However it is this simple clarification of fitness and fatness that may be even more important to consider, especially in the light of increasing evidence that physical activity alone has little impact on body weight. Increasingly, researchers are turning to diet/healthy eating and accompanying mental states (boredom, loneliness,k stress) as the dominant factors. Read more>>

(An item from the ISHN Member information service) An article in the August 2015 Issue of the Journal of Adolescent Health correlates the real and perceived crime rates in neighbourhoods with adolescent activity behaviours and weight status. "Socioeconomically and racially/ethnically diverse adolescents (N = 2,455, 53.4% female) from 20 urban, public middle and high schools in Minneapolis/St. Paul, Minnesota responded to a classroom survey in the Eating and Activity in Teens 2010 study. BMI was measured by research staff. Participants' mean age was 14.6 (standard deviation = 2.0); 82.7% represented racial/ethnic groups other than non-Hispanic white. Linear regressions examined associations between crime perceived by adolescents and crime reported to police and the outcomes of interest (BMI z-scores, physical activity, and screen time). Models were stratified by gender and adjusted for age, race/ethnicity, socioeconomic status, and school. BMI was positively associated with perceived crime among girls and boys and with reported crime in girls. For girls, there was an association between higher perceived crime and increased screen time; for boys, between higher reported property crime and reduced physical activity. Perceived crime was associated with reported crime, both property and personal, in both genders." Should we worry less about fast food outlets and more about safe streets? Read more>>

(An item from the ISHN Member information service)  Readers of this blog will know that we have been tracking the relationship (or lack thereof) between physical activity and overweight/obesity. Two Articles in July 2015 Issue of International Journal of Obesity continue the discussion. One article suggests that self-reporting of eating and activity behaviours are not sufficiently accurate and objective measurement is required. Another article reports on a study that "identified an unhealthy cluster of TV viewing with ED food/drink consumption, which predicted overweight/obesity in a small longitudinal sample of Australian children. Cluster stability was fair to moderate over 3 years and is a novel finding. A third behaviour examined in the study, physical activity was apparently not as significant as the eating/TV watching behaviours. This finding continues our growing realization that eating and activity may be independent factors/behaviours rather than linked and that it may be wiser to focus on eating, especially when combined with television viewing. Read more>>

(From the ISHN Member information service)  An article in the February 2015 Issue of the International Journal of Obesity questions recent reports and reviewws that claim progress is being made in reducing childhood obesity rates. The authors report that "before concluding that the obesity epidemic is not increasing anymore, the validity of the presented data should be discussed more thoroughly. We had a closer look into the literature presented in recent reviews to address the major potential biases and distortions, and to develop insights about how to interpret the presented suggestions for a potential break in the obesity epidemic. Decreasing participation rates, the use of reported rather than measured data and small sample sizes, or lack of representativeness, did not seem to explain presented breaks in the obesity epidemic. Further, available evidence does not suggest that stabilization of obesity rates is seen in higher socioeconomic groups only, or that urbanization could explain a potential break in the obesity epidemic. However, follow-ups of short duration may, in part, explain the apparent break or decrease in the obesity epidemic. On the other hand, a single focus on body mass index (BMI) greater than or equal to25 or greater than or equal to30 kg m−2 is likely to mask a real increase in the obesity epidemic. And, in both children and adults, trends in waist circumferences were generally suggesting an increase, and were stronger than those reported for trends in BMI." Read more>>

(From the ISHN Member information service)  The WHO fact sheet describing the response of health ministries to prevent and control NCDs indicates the collective, global intentions and strategies. The ideas and actions not mentioned on the page and in the action plan are as important as the ones that are highlighted. WHO summarizes the actions needed as follows:
" To lessen the impact of NCDs on individuals and society, a comprehensive approach is needed that requires all sectors, including health, finance, foreign affairs, education, agriculture, planning and others, to work together to reduce the risks associated with NCDs, as well as promote the interventions to prevent and control them. An important way to reduce NCDs is to focus on lessening the risk factors associated with these diseases. Low-cost solutions exist to reduce the common modifiable risk factors (mainly tobacco use, unhealthy diet and physical inactivity, and the harmful use of alcohol) and map the epidemic of NCDs and their risk factors. Other ways to reduce NCDs are high impact essential NCD interventions that can be delivered through a primary health-care approach to strengthen early detection and timely treatment. Evidence shows that such interventions are excellent economic investments because. The greatest impact can be achieved by creating healthy public policies that promote NCD prevention and control and reorienting health systems. Lower-income countries generally have lower capacity for prevention and control. Countries with inadequate health insurance coverage are unlikely to provide universal access to essential NCD interventions". Our initial comments: (1) The WHO is clearly medical, focused on health services rather than health promotion. (2) The absence of disease is the goal rather than overall health. (3) Other sectors are expected to be partners but a settings-based approach, essential to these partnerships, is neglected and forgotten. Read more>>

(From the ISHN Member information service)  The release of the WHO status report/global action plan this week represents the efforts of health ministries to address a cluster of physical health diseases. The key facts are not new: "(1) NCD's kill 38 million people each year. (2) Almost 3/4 of deaths (28 million) occur in low- and middle-income countries.(3) Sixteen million deaths occur before the age of 70; 82% of these "premature" deaths occur in low/middle-income countries. (4) Cardiovascular diseases account for most deaths, (17.5 million), followed by cancers (8.2 million), respiratory diseases (4 million), and diabetes (1.5 million). These 4 groups of diseases account for 82% of all NCD deaths. Tobacco use, physical inactivity, unhealthy diet and the harmful use of alcohol increase the risk of NCDs. Tobacco accounts for around 6 million deaths every year and is projected to increase to 8 million by 2030. About 3.2 million deaths annually can be attributed to insufficient physical activity. More than half of the 3.3 million annual deaths from harmful drinking are from NCDs In 2010, 1.7 million annual deaths from cardiovascular causes have been attributed to excess salt/s. To lessen the impact of NCDs on individuals and society, a comprehensive approach is needed that requires all sectors, including health, finance, foreign affairs, education, agriculture, planning and others, to work together to reduce the risks associated with NCDs, as well as promote the interventions to prevent and control them.odium intake.More than 190 countries agreed in 2011 to reduce the avoidable NCD burden in a Global action plan. This plan aims to reduce the number of premature deaths from NCDs by 25% by 2025. In 2015, countries will begin to set national targets and measure progress on the 2010 baselines. The UN General Assembly will convene a third high-level meeting on NCDs in 2018 to take stock of national progress. Read more>>

(From the ISHN Member information service)  A study reported in Volume 107, 2014 of Social Science & Medicine examined whether "Mothers' work hours are likely to affect their time allocation towards activities related to children's diet, activity and well-being. The researchers examined the suggestion that mothers who work more may be more reliant on processed foods, foods prepared away from home and school meal programs for their children's meals. A greater number of work hours may also lead to more unsupervised time for children that may, in turn, allow for an increase in unhealthy behaviors among their children such as snacking and sedentary activities such as TV watching. the study confirmed that hypothesis, even more so for higher income families. "Using data on a national cohort of children, we examine the relationship between mothers' average weekly work hours during their children's school years on children's dietary and activity behaviors, BMI and obesity in 5th and 8th grade. Our results are consistent with findings from the literature that maternal work hours are positively associated with children's BMI and obesity especially among children with higher socioeconomic status. Unlike previous papers, our detailed data on children's behaviors allow us to speak directly to affected behaviors that may contribute to the increased BMI. We show that children whose mothers work more consume more unhealthy foods (e.g. soda, fast food) and less healthy foods (e.g. fruits, vegetables, milk) and watch more television. Although they report being slightly more physically active, likely due to organized physical activities, the BMI and obesity results suggest that the deterioration in diet and increase in sedentary behaviors dominate." Read more>>

(An item from the ISHN Member information service)  We have been tracking the absence of effect on physical activity programs on obesity/overweight in this web site. (PA has many other benefits but apparently not reductions in weight). However, it appears that a focus on mental health and friendships may hold greater promise. An article in the September issue of the Journal of School Health reports on the aboriginal adaptation of the Healthy Buddies program. The authors note that: "There was a significant decrease in zBMI (1.10 to 1.04, p = .028) and WC (77.1 to 75.0 cm, p < .0001) in the HB group (N = 118) compared with an increase in zBMI (1.14 to 1.23, p = .046) and a minimal WC change in the control group (N = 61). Prevalence of elevated BP did not change in the HB group, but increased from 16.7% to 31.7% in the control group (p = .026). General linear model analysis revealed a significant interaction between time, group, and zBMI (p = .001), weight status (p = .014), nutritious beverage knowledge (p = .018), and healthy living and self-esteem score (p = .005). The HB program is a promising school-based strategy for addressing obesity and self-esteem in Aboriginal children."   Read More>>