Bonnie Bassett from headspace says the extremes of binge eating and starvation are coping mechanisms than can negatively impact our wellbeing.

"It's not uncommon for people to turn to junk food, or turn off food, when they aren't mentally well," Ms Bassett said.

"That's not to say that all junk food is bad but it is about moderation and practising healthy coping mechanisms like [going] for a walk or hanging out with friends."

The relationship between food and mood is a relatively new area of research.

Two recent studies sought to investigate whether eating healthier food could reduce depression. The results were unambiguous - people who ate healthy diets improved their depression symptoms more than people who only focused on social support.

Marathon Health dietitian Anna Winter says there are many ways to improve what we eat and it doesn't involve cutting out the foods we love.

"You don't have to stop eating treat foods," she said.

"Some chocolate or a takeaway here and there is fine. It's more important to make sure your diet includes things like colourful fruits and vegetables, foods high in fibre and other nutritious products most of the time."

Ms Winter also suggests that it's easier to stick to a healthy diet if you make small changes to begin with, as opposed to starting a drastic diet or detox.

"If you're looking to start eating healthier, make small changes like swapping an unhealthy snack for something healthy like fruit."

If you need support making healthy changes talk to your GP or contact Marathon Health on 1300 402 585.