From Time Magazine, How Much Alcohol Is Too Much?? [time.com]:
The not-so-good news: The more the participants drank, the more likely they showed abnormal changes in their heart structure and function. In men, the changes started accumulating after more than two drinks per day, or 14 or more drinks a week. In these men, the pumping chambers of their hearts increased slightly compared to those in non drinkers, a sign that the heart had to work harder to pump the same amount of blood, which can cause it enlarge and weaken. In women, these changes appeared when women drank much less, just above the one drink a day. In addition, among the women who imbibed more than a drink a day, the scientists found slight drops in heart function compared to women who drank less.
This paragraph hit home because this is exactly the reason my mom died about two years ago. Her heart was, according to the autopsy, enlarged. I'm not sure how much she drank, but I'm pretty sure it was more than a drink a day for many, many years.
My mom was not the only alcoholic in my family. As a result, I made a decision relatively early in my life not to allow alcohol to control my life. As a result, I do not drink alcohol on a daily basis.
Turns out that early life decision ended up being smarter than I thought.