Can mobile apps help people lose 

weight...and keep it off?

Many of us may be well accustomed to using health and fitness mobile apps that have the sole purpose of counting calories and measuring activity levels, to help us lose weight. With the majority of people now using Androids and iPhones, downloading apps to our mobile phones is easy and hugely popular. As a result, tracking what we consume on a daily basis has never been so simple. 

However, how effective are these calorie counting apps? Can technology really aid us in reaching our ideal weight, or is it just a fad, a fashion accessory that will be forgotten with the next diet fix?  Furthermore, as with all successful weight loss, does it come down to our own behaviour and self motivation to bring about healthy changes to our life?

A recent study from the Northwestern University Feinberg School of Medicine, identified as the first of its kind, sought to examine the relationship between technology and the impact it had on weight. The study will be published in the Archives of Internal Medicine. 

The Study and Findings

The Northwestern technology research incorporated behaviour change techniques, including self monitoring, goal setting, feedback and social support.

The research examined a cohort of sixty nine overweight and obese men who were an average age of fifty eight. All participants were offered health education classes on nutrition, exercise and behaviour change; every two weeks during the first six months and once monthly for the remainder of the year. 

Each participant received personalised weekly calorie and activity goals to help them lose weight and all participants were encouraged to attend nutrition and health classes. The participants were divided into two groups. One half recorded their activity and diet on paper, whilst the other half used the Northwestern technology mobile device, to transmit their data to a behaviour coach, who monitored and provided feedback twice a month. 

From the evidence, it was found that those who used the mobile device and attended eighty percent of the nutrition classes lost fifteen pounds and maintained this for one year. The weight loss for those who used the mobile app but who did not attend any classes lost almost nine pounds. The group who attended classes but did not use the mobile app, did not loose any weight. 

The lead investigator of the study and Professor at the University, Bonnie Spring, found the results to be positive and argued that mobile devises could have a significant role to play in making people more health aware; "The app is important because it helps people regulate their behaviour, which is really hard to do....Most of us have no idea how many calories we consume and how much physical activity we get. The app gives you feedback on this and helps you make smart decisions in the moment." 

However, Spring also emphasised that weight loss only occurred when people attended health education classes and engaged in regular exercise. The app alone would not be effective.

"The 'widget' is critical but it is not magical by itself," Spring added. "People need all the tools at their disposal." 

Should we all be downloading apps?

Diets usually fail because we end up eliminating certain food groups – and in the long term this is not sustainable. The difference between “diet fads” and calorie counting mobile apps, is that the latter can help set achievable and realistic goals, whilst simultaneously tracking our calorie intake and activity levels. 

It is often the case that we do not realise how many calories certain foods contain, and so, we are ignorant to all the hidden fats/sugars.  Thus, these quick and easy food tracking devices empower us to make sensible and more informed decisions that govern our health and weight. 

A frequent user of a calorie counting mobile app, Koorosh Ashrafi, PhD Research Scientist at BTG International group company, says; “I’ve lost 10 kilos over the past 6 months, and you learn balance is the key.  I’ve lived quite a sedentary lifestyle because of the pressure of work and studying, and I was still consuming the same amount of calories as 10 years ago when I was training as a rugby player.  Although I am a firm believer of everything in moderation, having a device at the tip of your fingertips, really does educate you about food and its content”

Nelly Araujo, Development Administrator at RSPH, and previous user of the mobile app says; “The goal setting was a motivational tool for me, but I found doing the mobile exercise with my partner, is what also drove me to make healthy changes – because we could support and encourage each other”

Bringing about behaviour changes in our life is no easy task.  We have to want to do it and it helps if we have the right tools at our disposal along with a good support network.

Spring believes that one of the big challenges in treating obesity is the need to provide behavioural treatment in a healthcare system where professionals don’t often have the time and training to support people with unhealthy diets or mental problems.

The RSPH is a strong advocator of the benefits of making healthier behavioural changes, but acknowledges that for many this can be challenging. The RSPH Level 2 Awards in Understanding Behaviour Change, is a qualification aimed at helping learners, health trainers and anyone working within the community to engage with individuals to develop strategies to undergo behaviour change and to offer brief advice and interventions to support individuals in improving their health and wellbeing.  Please click here for further information on the qualification, or contact Gina Mohajer.   

Why making just two lifestyle changes can have positive and far reaching affects on health

A recent study, at the Northwestern University Feinberg School of Medicine, found that changing one bad habit can have a positive knock on effect on other behaviours.  A simple step such as watching less television, can simultaneously reduce the amount of time one spends snacking on unhealthy foods – as these two behaviours are closely related.   As such, the notion that you must radically transform your life in order to be healthier is not necessarily true and often hard to maintain.  Making just a couple of small changes, as the study demonstrates, can have a real and long lasting impact on people’s health.

The study was conducted by Bonnie Spring, professor of preventive medicine at Northwestern University Feinberg School of Medicine, in an attempt to find out the most effective way to spur people to change common bad health habits.  204 adult patients with unhealthy habits, were given the following treatments; an increase in vegetables/fruit and physical activity and decrease in fat and sedentary leisure.  Over the course of the three weeks, the patients had to record their daily data into a personal digital assistant in order to establish if they met their goals. 

After the three weeks, patients no longer had to maintain their “healthier” lifestyles, but were still required to send data three days a month for six months.

After the completion of the six months, the study found that the patients kept to their new healthier lifestyle changes rather than reverting back to their old habits.  Around 86% of the participants said that once they had made the initial change, they tried to maintain it.  By incorporating fruits and vegetables in their diet empowered them to believe that they were in fact capable of change. 

The results indicated that the most effective way to improve health required two key behaviour changes, namely cutting the amount of time spent watching TV or on the computer and eating more fruits and vegetables.  It is believed that these two simple changes could have long lasting results.   

Spring said, "Just making two lifestyle changes has a big overall effect and people don't get overwhelmed."

The majority of the population, where obesity is most prevalent, often lead unhealthy and sedentary lifestyles, putting them at high risk for heart disease, diabetes and cancer.  Spring argues that it is often hard for doctors to know where to initiate change in unhealthy habits, without discouraging or offending patients.   Thus this “two way” simple approach enables others to make realistic and manageable changes by giving them confidence to carry it out.

“With this simplified strategy, people are capable of making big lifestyle changes in a short period of time and maintaining them”  


Photo by Sina Bahrami http://5127.co.uk/

New Nutrition Guidelines published 

for Pre-School Children

This week, the School Food Trust has published guidelines on what foods young children should eat.

The guidelines have been introduced as a result of an independent report in 2010, which flagged demand for clearer guidance from childcare providers and parents.

The report highlighted the growing concern, that a fifth of children are either overweight or obese before they start school.  With Type 2 diabetes on the increase and dental health in young children deteriorating, the School Food Trust advocates that healthy eating before the age of five is essential.   

The voluntary guidelines, which are aimed particularly at nurseries, childminders and other providers of service for preschoolers, is an attempt to educate adults on healthy eating habits for young children in order to help reduce childhood obesity.

The guidelines include recommendations on the types of food to offer young children, portion sizes, sample menus as well as advice on tackling fussy eating and involving children in food and cooking activities.   

Children’s Minister Sarah Teather said: “Healthy eating is at the heart of helping every child get the best start in life”. 

As such, the new guidelines illustrate the importance of a varied diet for the under-fives, one which is rich in fruit, vegetables and dietary fibre, and how to avoid too much saturated fat, sugar and salt, which can contribute to weight gain and tooth decay.

The School Food Trust said; “Children start learning about food at a very early age. The messages they receive during this time lay the foundations for the choices they make about food as they move up to school and beyond”.

To download the Voluntary Food and Drink Guidelines For Early Years Setting in England – Practical Guide please click here.  

Cutting out the Fat....

The relationship between fatty foods and developing type 2 diabetes

As levels of obesity continue to rise, posing as a serious threat to public health, conditions of type 2 diabetes has also increased.  Evidence has suggested a strong link between obesity and developing type 2 diabetes, however, scientists have now discovered how a high fat diet can cause type 2 diabetes.  Researchers believe this discovery will not only help explain the relationship between fatty foods and obesity, but it may lead to finding a cure for the disease.   

This week the Daily Mail and BBC Health News reported the findings.

The study published in the peer-reviewed journal Nature Medicine, was carried out by researchers from the University of California and the RIKEN Advanced Science Institute in Japan.  The study sought to investigate whether a high-fat diet might contribute to causing type 2 diabetes, by looking at its effect on the insulin producing cells of the pancreas on mice, and on the response of cells to insulin.  The scientists investigated their findings further on human pancreatic cells in the laboratory.

The Science bit

In type 2 diabetes, the cells in the pancreas that normally produce insulin – called beta cells – gradually stop working over time.  These cells respond to increased levels of sugar in the blood by producing insulin, but this ability is lost in type 2 diabetes.  The cells of the body become less responsive to insulin (insulin resistance) and fail to take up the sugar in the blood stream.  This then causes high levels of sugar circulating around the body, which is detrimental to cells and tissues.   

The Research

Scientists looked at what effect a high-fat diet had on the activity of certain genes and proteins in the cells that are thought to help the beta cells function. Particular focus was placed on a protein called GnT-4a glycosyltransferase.  In healthy pancreatic cells this protein helps in the detection and response to glucose in the blood stream.

The researchers found that when they fed mice a high-fat diet, the genes encoding the GnT-4a protein and one of the glucose sensing proteins (called Slc2a2) became less active in the mice’s pancreatic cells.

The scientists also genetically engineered mice to have a form of GnT-4a that was always active in the beta cells. They then looked at how these mice responded to the high-fat diet.  The theory was that if dietary fat had its effects by stopping these proteins working, then these genetically engineered mice should be less susceptible to the effects of a high-fat diet.

The Findings

It was found that high-fat diets in mice affected the insulin-producing cells, reducing their ability to correctly respond to the presence of glucose.  As such, there were high levels of glucose circulating in the bloodstream and a reduced ability of certain tissues to respond to insulin and take up sugar.   Tests on pancreatic tissue from people with type 2 diabetes suggested that similar changes may be occurring in humans.

However, in mice genetically engineered to have GnT-4a work constantly in the beta cells, the high-fat diet had less of an effect on blood sugar levels and the ability of the cells to respond to insulin, even though the mice became fat.  This enhanced understanding of the effects of fat on pancreatic cells, provides a possible biological explanation as to why high fat diets can lead to type 2 diabetes. Researchers believe this will also aid the development of possible new treatments for type 2 diabetes.

However, human research is a lengthy process and finding a cure for type 2 diabetes may take years.  Thus, the best current advice to prevent type 2 diabetes, is to maintain a healthy weight, do exercise and eat a healthy diet.  For further information on this research please visit NHS Choices

What You Can Do?

At RSPH Training Solutions we take health seriously and we believe that through education and training, people can learn to make better lifestyle choices and positively influence people around them.  The level 2 Award in Understanding Health Improvement provides knowledge and understanding of the benefits of good health and well being, and of the barriers to making a change of lifestyle.  This qualification is specifically designed for people who work with the public in a healthcare environment and those who have an interest in developing public health skills.  For further information on the course please click here or contact Nicolette Boustaoui   or by phone 020 7265 7325. 

Are We Eating Enough Variety of Fruit and Veg?

We are often being reminded of the many health benefits derived from eating our five portions of fruit and vegetables a day, especially in helping to prevent cancer.  However, The European Prospective Investigation into Cancer and Nutrition (EPIC) study has revealed that in relation to lung cancer, the important thing is not just the quantity but also the variety of fruit.  By consuming a wider variety fruits and vegetables, we can reduce the risk of lung cancer by 23%.    

The EPIC study involves 23 centres from 10 European countries (Germany, Denmark, Spain, France, Greece, Holland, Italy, Norway, the United Kingdom and Sweden, working with a sample of 500,000 European subjects (41,000 of whom live in the Spanish regions of Asturias, Granada, Guipúzcoa, Murcia and Navarre).  The results of the study, which have been published in the journal Cancer Epidemiology, Biomarkers & Prevention, demonstrates that eating "more than eight sub-groups" of vegetables cuts this risk by 23% compared with eating "less than four sub-groups". In addition, this risk falls by a further 4% for each unit added to the diet from another sub-group.  This link was found only in smokers. 

Lung cancer is considered to be the most common type of cancer in the developed countries.  Statistics from Cancer Research UK indicate that lung cancer is also the most common cause of death from cancer for both men and women.  Thus, despite the encouraging evidence produced by the study,  Sánchez Pérez, director of the Granada Cancer Registry at the Andalusian School of Public Health, concludes that "the most effective way of preventing it (lung cancer) continues to be reducing the prevalence of tobacco consumption among the populace".