Diabetes and wine
The Harvard School of Public health conducted a 14 year trial called the Nurses Health Study, which required participants to complete a questionnaire every two years detailing lifestyle choices and diagnoses of any medical condition.
The subject were divided into three levels of alcohol consumption. The study found that women who drank regularly and moderately (one or two drinks per day, or total of 15-30 gm of alcohol) had a 58 percent lower likelihood of developing diabetes.
Other studies point to multiple benefits of regular and moderate wine drinking, including lower risk of stroke, colorectal tumors, skin and other cancers, senile dementia, and even the common cold, as well as reduced scarring from radiation therapy.