Garlic is thought to have an antihypertensive effect because it stimulates production of certain chemical substances called nitric oxide and hydrogen sulphide, which helps relax blood vessels.
The team also recently found that dark chocolate was also effective in reducing high blood pressure.
"It doesn't work as well as garlic but it is more loved, and the drawback is it is not really practical for long term use," said Ried.
"If garlic gave an answer that would help quite a lot of people," she added.
Source-ANI