Numerous studies in rodents have found that it has anti-obesity effects.

Studies in Japanese adults have demonstrated its flair for attacking belly fat.

One notable study followed 210 people with a lot of belly fat.

It found that taking Lactobacillus gasseri for 12 weeks reduced body weight, fat around organs, BMI, waist size and hip circumference.

What's more, belly fat was reduced by 8.5 percent.

However, when participants stopped taking the probiotic, they gained back all of the belly fat within a month

It is thought that certain probiotics may inhibit the absorption of dietary fat, increasing the amount of fat excreted with feces.

Put simply, they make you "harvest" fewer calories from the foods in your diet.

Certain bacteria, such as those from the Lactobacillus family, have been found to function in this way.

Probiotics alone won't yield results as gains in one area can be offset by bad decisions in another.

It is important to incorporate probiotics into a diet that cuts back on calories while topping up the essentials.

"The best way to achieve this is to swap unhealthy and high-energy food choices such as fast food, processed food and sugary drinks (including alcohol) for healthier choices," advises the NHS.

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Best weight loss supplements: The extract proven to burn body weight and belly fat - Express