Moderate alcohol consumption can offer various health benefits when consumed in moderation. Research suggests it may reduce the risk of heart disease by increasing levels of high-density lipoprotein (HDL) cholesterol and improving blood circulation. Moderate drinking may also have a protective effect against diabetes and help in maintaining cognitive function as one ages. However, the key is moderation—defined typically as one drink per day for women and two for men. Excessive alcohol intake can lead to serious health issues, including addiction and liver disease.