Highlight that the abstention is voluntary and based on personal decisions related to morals or health. As a vegetarian and health conscious individual, she's an abstainer from meat.
Pro Tip 2/3
Not Negative
Reflects a positive or neutral self-imposed restriction, rather than being forced upon. Even though his friends drink, he's a proud abstainer from alcohol.
Pro Tip 3/3
Beyond Alcohol
Can apply to avoiding activities other than drinking, like gambling or eating junk food. She's an abstainer from online games to focus on her studies.