Obesity rates in Australia reach a new high

Obesity in Australians is on the rise and there is one unlikely age group that are stacking on more kilos than the rest.

Young adults are gaining weight at a rapid pace and have been identified as the heaviest age group in Australia.

The period between leaving school and starting a life of work or further study is when they are most likely to gain weight.

Experts predict 80 per cent of 18 to 30-year-olds will be overweight by 2038. As a result the average life expectancy of people obese at 25 will decrease dramatically, with men losing eight years of life and women losing six years.

Soft drinks, fast food and inactivity contributing to obesity rise

“The period as you transition from adolescence, particularly to young adulthood is the highest trajectory of weight gain that most people experience across their lifetime,” University of Sydney dietitian Dr Stephanie Partridge said.

“After high school, they do tend to drop out of a lot of the community sports that they were participating in.”

Dr Partridge said the reason for weight gain is this group often has little money or time, making energy-dense fast foods appealing.

Sugary drinks and alcohol also contribute, along with inactivity.

How can obesity be prevented?

Maintaining a healthy body weight during the transition into adulthood is instrumental in preventing heart disease and many cancers, while exercising will help stave off depression.

These are easy hacks you can follow to help lose weight.

1. Eat smaller portions

Dietitians recommend young adults buy smaller 18cm dinner plates to control their portion sizes.

If they fill half that plate with vegetables (not potato chips), dedicate a quarter of the plate to proteins, like meat or legumes, and a quarter to healthy carbohydrate foods like breads, rice or pasta, they will be on their way to good health.

“Things like smaller dinner plates make such a difference, it’s a physical reminder of portion sizes,” Healthy Wellbeing Queensland dietitian Dr Robyn Littlewood said.

2. Avoid yo-yo dieting

Ever wondered why you may regain weight after losing it? Once you stop growing in your 20s, your body will gravitate towards a set point weight.

“It’s the weight you remember bouncing back to after every bout of starvation or dieting,” explains University of Sydney’s Professor Nick Fuller.

“Some people often have a normal healthy body weight to start with and then drive themselves into an overweight or obesity range through yoyo dieting.”

According to his research, when you diet and lose 3kg or more your body will fight to get back to that set point weight. Your metabolism will slow down and produce higher levels of hunger hormones, turning off the hormones that tell you when you are full.

Fad diets like the Lemon juice diet, can drive your body into an overweight range that’s hard to bounce back from. Picture: Supplied.

“The body is doing all it can to get you to put that weight back on,” Prof Fuller said.

“Even more disturbing is that these hormones don’t go back to their baseline when you put the weight back on. Your metabolism stays lower so you continue to burn fewer calories while resting which means you continue to put on a little bit of extra weight.”

His research has found if your set point weight was 90kg, and you diet to get down to 80kg, over time you won’t just regain the 10kg you lost, your weight will go up to 92kg as it puts on extra fat to prepare for the next bout of starvation.

3. Interval weight loss

The way to overcome these biological weight defences is to lose weight slowly and take a pause in weight loss every month to reset your set point weight, says Prof Fuller.

To achieve success you must lose around half a kilogram a week for a month then maintain that new weight and lose no more the next month. The following month lose another half a kilogram a week then stop again.

“So it’s a month on, a month off, a month on and typically over the course of 12 months it’s allowing you to lose 11 to 12 kilos,” Prof Fuller said.

“It takes time to restore the damage you may have done through dieting. Metabolism doesn’t restore overnight.”

4. Retrain your food brain

Dietitians suggest young adults eat from big to small throughout the day because research shows we burn calories 2.5 times more efficiently in the morning than the evening.

They should opt for fruit and nuts when snacking, not processed high-sugar foods.

And with every meal, include a source of whole grains, a source of protein and a source of good fat like olive oil and vegetables.

Calculate your health age

Your “health age” is a good way to check if you need to consider some lifestyle changes. Check out NewsCorp’s health calculator to find out how old your body really is.