Scientists say giant trials ought to be held to see if kombucha can assist scale back blood sugar ranges for individuals with type-2 diabetes.

The historical fermented tea drink has grown in recognition lately because of a variety of purported well being and power advantages, although proof to help lots of the claims is skinny.

Kombucha's fundamental elements are black tea, yeast and sugar.

A small "feasibility" research - designed to see if an even bigger undertaking is worth it - has now linked it to decrease blood sugar ranges.

Twelve individuals with type-2 diabetes have been concerned, with half ingesting eight ounces (236ml) of kombucha each day for 4 weeks and the others given a placebo drink.

Researchers then swapped what the teams consumed - with the placebo pattern getting kombucha and vice versa.

The US-based scientists discovered that after a month the drink appeared to decrease common fasting blood glucose ranges, whereas these having a placebo confirmed no distinction.

A bigger undertaking is now being known as for to see if the outcomes maintain true over an even bigger pattern dimension.

Read extra:One alcoholic drink a day could raise blood pressureAncient worms revived after 46,000 years

Author Professor Dan Merenstein, from Georgetown University School of Medicine in Washington DC, stated: "Some laboratory and rodent studies of kombucha have shown promise and one small study in people without diabetes showed kombucha lowered blood sugar, but to our knowledge this is the first clinical trial examining effects of kombucha in people with diabetes.

"Much more analysis must be achieved however that is very promising.

"A strength of our trial was that we didn't tell people what to eat because we used a crossover design that limited the effects of any variability in a person's diet."

The research is revealed within the journal Frontiers in Nutrition.