Stevia becomes more attractive in view of the disturbing history of side effects of artificial sweeteners.
In fact stevioside, the active chemical in Stevia has been reported to have some role in improving insulin production and lowering blood pressure. Though this may be beneficial, it also means the herb may interfere with blood sugar and blood pressure reducing drugs.
It is therefore important to inform your physician about the consumption of any herbal products that contain Stevia if you are on medication for any of these ailments. I will urge some other categories of persons to exercise caution with regard to the use of Stevia:
• Pregnant women and mothers who are breast feeding. They should avoid Stevia as there is lack of documented evidence about its effects on the fetus and on infants.
• People allergic to the Chrysanthemum/Daisy family of plants may be allergic to this plant as well. The allergic reaction is likely to manifest as an itchy rash.
• There is some evidence from animal studies to suggest that when taken in very large quantities, it may harm the kidneys. It is therefore suggested that persons suspected or suffering from kidney trouble avoid its use.
The Expert Committee for food additives of the WHO suggests that the daily intake of stevioside should be limited to 100-150 mg/day. On a parting note, I would state that Stevia, if used sparingly, is not likely to cause much harm. However, it would make more sense if you were to curb the urgings of your sweet tooth and reduce the intake of sweetened foods.