Risk factors make it more likely you’ll get reflux, but it’s not a certainty. As a basic rule, the risk factors for heartburn and reflux fit neatly into one of three basic categories:

Risk Factors You Can’t Change
Your sex
Your body shape
Your family history
Risk Factors You Can Make Less Risky
Medical conditions (such as asthma) that may trigger reflux
Medicines that upset your stomach
Risk Factors You Can Eliminate
Bedtime snacking
Being stressed
Being overweight
Irritating foods and beverages
Lack of moderate exercise
Very large meals