Research on alcohol’s impact on health has yielded mixed results, with some studies endorsing daily red wine for health benefits, while others caution against any intake. A new review aims to clarify these risks, revealing that alcohol consumption is entirely responsible for over 60 diseases, as per the World Health Organization’s International Classification of Diseases. However, it also notes that reducing or stopping alcohol intake can mitigate or reverse some damage.<\/p>\n
Sinclair Carr, a doctoral candidate at Harvard T.H. Chan School of Public Health, led a team to assess various studies on alcohol, challenging existing assumptions and biases. Carr, along with senior author J\u00fcrgen Rehm from the Institute for Mental Health Policy Research, discussed the findings, highlighting efforts to reconcile traditional epidemiological methods with newer Mendelian randomization approaches.<\/p>\n
Rehm explained that the study updates global assessments like the Global Burden of Disease Study, aiming to quantify alcohol’s contribution to disease and injury. They examined average drinking levels and patterns, updating the review every seven years. The study sought to align classic epidemiological practices with Mendelian randomization, which uses genetic information to assess alcohol’s health risks.<\/p>\n
Carr emphasized that Mendelian randomization studies have reshaped views on alcohol’s health risks, particularly for heart diseases and ischemic stroke. These studies often found no link between alcohol and disease risk, conflicting with observational studies suggesting moderate consumption might be beneficial.<\/p>\n
An example of bias is the perceived health benefits of moderate drinking, which may be due to other factors like socioeconomic status or diet. Carr noted discrepancies in studies on ischemic heart disease, pointing out biases in Mendelian randomization studies.<\/p>\n
Rehm stated there is no safe alcohol level regarding cancer, as any consumption increases cancer risk. However, the risk varies with different diseases. For instance, while moderate alcohol intake may raise breast cancer risk, it could also offer heart disease protection.<\/p>\n
Rehm clarified that alcohol type, such as red wine or whiskey, does not scientifically matter. Carr added that stopping or reducing drinking can slow or reverse damage, with evidence showing reduced blood pressure and potential brain recovery after cessation.<\/p>\n
Carr highlighted the need for improved research methods in alcohol studies, suggesting randomized trials or precise observational data to address existing biases. The aim is to inform individuals about alcohol’s health impacts, enabling better personal health decisions. Despite progress, many questions remain, necessitating further research.<\/p>\n