As the number of people living with obesity surpasses one billion – how can you have a healthier relationship with food?

More than one billion people around the world are now living with obesity, a new global analysis suggests.

As of 2022, around 159 million children and adolescents and 879 million adults are obese, according to research published in The Lancet.

In the UK, about 16.8 million people are living with obesity, including eight million women and 7.4 million men, plus more than a million children.

According to the NHS, in general terms, a person is within the obese range when their BMI score is 30-39.9, while 40 or above is classed as severely obese. It is associated with a range of increased health risks, including a higher likelihood of developing certain cancers, type 2 diabetes and heart disease, as well as poorer mental health.

So, what causes obesity, and how can people have a healthier relationship with food?

Obesity is a complex issue

“Obesity is considered a complex health issue, because it can be caused by the interplay of numerous factors about the individual’s physiology, genetics, socioeconomic status (such as how much they earn) and more,” says Carolina Goncalves, superintendent pharmacist at Pharmica. “It is often thought that obesity is caused by overeating or a failure to exercise, but in reality, obesity can be caused by numerous factors that are not necessarily in the affected individual’s control.”

“The world has changed dramatically over the past 100-150 years. The availability of convenience and fast foods, supermarket deals such as two-for-one and bigger portion sizes, the ease with which we can move around with cars, public transport and plane travel, and our work-life balance have all changed – some for the better, some for the worse,” says Louise Wright, physiology national lead at Nuffield Health.

“With these changes has come a change in energy requirements, so if we end up taking on board a few more calories than needed, plus reduce our energy output (i.e. our activity levels), we can end up out of balance and thus store this excess energy as body fat.”

Mental and emotional health can also play a role, particularly if somebody has a food addiction or binge-eating disorder – when someone eats very large amounts of food in a short time period.

“People who do this might feel a lack of control over their eating, sometimes eating rapidly, alone, and until they’re uncomfortably full. It also brings with it strong negative emotions, with some people feeling depressed, guilty, or disgusted with themselves. This unhealthy relationship with food is often difficult to spot in friends and family as it is done in secrecy,” says Dr Catherine Carney, a psychiatrist at Cheshire-based private addiction rehab clinic, Delamere.

“Negative physical health impacts from binge eating include increased risk of heart disease, strokes, and type 2 diabetes, as well as digestive and respiratory issues.”

How can people develop a healthier relationship with food?

To build a healthier relationship with food, it’s usually necessary to look at both the mind and body together, and consider what’s going on for someone as an individual.

“Everyone has their own relationship with food, so a personalised recovery programme that meets your specific needs, following a physical assessment from a doctor, is recommended. The assessment should identify any serious risks or dangers, and the recovery programme will focus on creating healthy habits while eating food,” says Carney.

There might be a number of things that need to be worked – including our cooking skills, psychological state, physical activity, our access to food and how we think about food.

“Simple things such as drinking more water, walking for 10 minutes extra per day, or aiming for an extra portion of vegetables per day are a great place to start. It doesn’t have to be complicated – small changes can have a big difference.”

Carney also suggests sharing your cravings with friends and family to lift the burden. Her other advice includes trying to eat with friends or family to tackle the loneliness, practicing self-care in preparation for cravings, triggers and relapses, and creating structured meal plans and times in the day to eat.

Psychological support is also key

Carney believes psychological support, such as counselling, is “absolutely” important. “Obesity and other issues relating to eating have psychological issues at their root,” she explains. “It is a psycho-physical issue, so a dual approach will be needed if someone is to truly recover in as healthy a way possible, and so it doesn’t lead to something worse, such as an eating disorder.”

Goncalves says addressing binge eating also “requires a comprehensive approach that includes psychological support, nutritional counselling, and in some cases, medical intervention to break this cycle and promote healthier eating habits and body weight regulation, such as Orlistat, Wegovy (semaglutide) and Saxenda (liraglutide).”