The weight-loss industry is on track to bring in billions by 2030 - and one Kiwi company is taking advantage of the craze.

Calocurb was developed with the help of Plant and Food Research and it's selling itself as a natural appetite suppressant.

CEO Sarah Kennedy the company is growing every quarter - and has attracted significant interest in the US.

"The biggest thing for us in the US is not only word of mouth, it's advertising. One company spent a billion dollars, but we're not going to do that - we don't have to." 

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