Everywhere you turn these days, there’s a diet ad, or family member or friend raving about some new diet that apparently works wonders.

But what does the research actually say about how to lose weight - and if you even need to lose it in the first place?

To find out, The Conversation’s Alexandra Hansen interviewed Clare Collins, a professor in nutrition and dietetics at the University of Newcastle.

Professor Collins, who recently wrote an article titled The science behind diet trends like mono, charcoal detox, Noom and Fast800, also designed a free online course called The science of weight loss – dispelling diet myths.

Alexandra began by asking Clare Collins how a person would know if they needed to change their diet.

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Additional reading:

The Australian Guide to Healthy Eating

Credits:

Recording and editing by Wes Mountain and Chynthia Wijaya, additional editing by Sunanda Creagh.

Additional audio

Kindergarten by Unkle Ho, from Elefant Traks.

CNN report.

BBC report.

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