You may have heard that one serving of alcohol per day can protect your health. But don’t raise your glass just yet — a new study suggests that it might be better to cut that amount in half.

Oxford University researchers wanted to determine the optimal amount of alcohol that would correlate to the fewest deaths from chronic disease. Previous studies have often looked at the separate effects of alcohol on heart disease, liver disease, or cancers alone.

Using a statistical model, the scientists found that cutting alcohol intake to just over half a unit a day would save 4,600 lives a year. Half a unit is as little as a quarter of a glass of wine or a quarter of a pint of beer. This is lower than both UK government recommendations and American Heart Association (AHA) guidelines.

While the AHA does not recommend drinking alcohol for health benefits, the organization does acknowledge that numerous medical studies suggest “moderate” amounts of alcohol may be beneficial.

A “moderate” amount is defined as one to two drinks per day for men, and one drink per day for women. (A drink is defined here as 12 ounces of beer, 4 ounces of wine, 1.5 ounces of 80-proof spirits, or 1 ounce of 100-proof spirits.)

To get the benefits of alcohol without any risk, try drinking a small glass of organic grape juice each day.