First it was protein dominating social media as the diet must-have — and now it is fibre that is trending.

Influencers are pushing people to get more, and doctors are welcoming it, with more than 90 per cent of Australians not hitting the recommended daily intake.

WATCH THE VIDEO ABOVE: Fibre quickly becoming a popular dietary trend

Fibre-maxxing involves loading up on high-fibre foods.

While most social media trends are misleading, this is one dietitians are getting behind.

“It slows down digestion, it keeps you full for a longer time and stabilises your blood sugar levels and even helps your body absorb nutrients better,” dietitian Purva Gulyani told 7NEWS.

High fibre intake is associated with lower risk of disease.

“Fibre is crucially important for maintaining our gut health,” gastroenterology specialist Simon Ghaly said.

“It is associated with lower risk of bowel cancer, reduces irritable bowel syndrome and preventing heart disease and stroke.”

Isabel Evans says it changed her life.

“My cholesterol levels lowered, my liver enzymes were much better, I had good blood results and I actually lost weight,” Evans said.

The recommended intake is around 25 to 30 grams a day.

But it is not about supplements, it is about adding whole foods to your diet.

Just a serve of fruit like berries and vegetables including broccoli and corn can add several grams.

Beans and nuts are super rich in protein but the key is not to overdo it.

Fibre-maxxing has gone gangbusters on social media, where there is no shortage of advice about how best to meet daily fibre needs.

One clip shared by NHS surgeon Karan Rajan, talking about the fruit and vegetables that pack a fibre punch, has been watched more than 1.3 million times.

Another clip by UK dietitian Josie Porter, who has 30,000 followers across Instagram and TikTok, has been watched almost 100,000 times.

“Fibremaxxing is having a moment and for good reason,” she said.

“Packing your plate with high fibre foods can help you feel fuller for longer, steady your energy, and keep your gut bacteria thriving.“Going from low to high fibre overnight is a fast track to bloating, gas and unpredictable toilet trips.

“If you want the benefits without the gut symptoms, your best bet is to build up slowly.”