What scientists found
This recent study came out of the Hormozgan University for Medical Science in Bandar Abbas, Iran. As part of their research, scientists looked at the effects the extract of both nettles and walnut leaves had in regards to blocking the activity of the alpha amylase. What they found was that both plant extracts were very effective at blocking this compound. When a dosage of 2mg/ml extract of nettle was used, the result was a 60 percent inhibition of the alpha amylase, while walnut leaf extract, at a concentration of 0.4mg/ml had the same effect.
Researchers noted that this was the first time that extracts of these plants has been clinically proven to have an anti-diabetic effect, and that this study could lead to further fruitful research in the future. And while most studies are geared towards isolating an active component - with the idea of eventually turning into a prescription or over-the-counter medication - this might not be necessary, especially not if more research reinforces the fact that simple extracts of these plants can help diabetics control their condition.
In short, diabetes is a serious condition which affects people all around the world, in wealthy and poor countries alike. However, much research is being devoted to finding natural ways to help combat this disease that do not cause serious long-term side effects like many conventional anti-diabetic drugs today. Studies like this one offer some promise of being able to come up with plant-based treatments to control diabetes and prevent the onset of the severe complications this disease can bring with it.