Heartburn during your period happens because hormonal changes slow digestion and increase stomach acid production. This creates pressure on your lower esophageal sphincter, pushing acid upward.
Progesterone, which rises during menstruation, relaxes smooth muscles, including those in your digestive tract. This slows food movement through your system, increasing stomach pressure. At the same time, estrogen fluctuations can boost stomach acid, worsening irritation.
| Type | Cause | Timing |
|---|---|---|
| Hormonal Heartburn | Progesterone and estrogen fluctuations | Throughout your cycle, peaking during menstruation |
| Reflux Heartburn | Increased stomach acid and slowed digestion | Immediately after eating during your period |
| Stress-Induced Heartburn | Menstrual cramps and stress | During heavy cramping |
Many people assume heartburn only happens due to spicy foods or overeating. While these can trigger it, hormonal shifts during your period create a perfect storm for acid reflux, even if you've eaten normally.
Another myth is that heartburn only affects older adults. While it's more common as you age, hormonal changes during menstruation can cause it in younger people too. According to the American College of Gastroenterology, nearly 15 million Americans experience heartburn daily, and many are women of reproductive age.
When I first noticed heartburn during my period, I assumed it was just bad luck with food choices. But after tracking my symptoms, I realized it happened even when I ate the same foods outside my period. Adjusting my diet-like avoiding large meals and cutting back on acidic foods-helped reduce flare-ups. I also found that lying on my left side after eating lowered my risk of reflux.
If heartburn during your period becomes severe or happens frequently, consult a healthcare provider. Persistent heartburn could indicate gastroesophageal reflux disease (GERD) or other digestive issues. A doctor can help rule out underlying conditions and recommend treatments like antacids or prescription medications.