Heartburn during pregnancy usually isn’t about producing too much stomach acid. Instead, it commonly occurs for two reasons.
During pregnancy, your body produces relaxin, a reproductive hormone produced by your ovaries and the placenta. It relaxes and softens joints and ligaments to help your body stretch and prepare for birth.
While this is necessary for your pelvis, it can also loosen the lower esophageal sphincter. When functioning optimally, this valve between the esophagus and the stomach should only open when swallowing to allow food down, and then it should quickly close again.
However, relaxin can prevent it from closing as efficiently.
The potential for acids to be pushed up past the weakened valve increases when combined with the added pressure that’s put on the stomach as baby grows and organs shift. The delicate lining of the esophagus doesn’t have the same protection against acid that the stomach does. So, when acid rises into the esophagus, it causes a burning sensation in the chest, just behind the breastbone.
Why antacids aren’t the full solution
Antacids can absolutely provide relief when you’re experiencing discomfort from heartburn, and we understand that fast relief is important. However, they work by reducing stomach acid, and that’s the concern.
Stomach acid isn’t the enemy… you need it to properly break down food, absorb nutrients, and support your gut health. This becomes even more important during pregnancy, when your nutrient needs are higher.
Regularly suppressing stomach acid can:
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Interfere with digestion
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Reduce absorption of certain key nutrients
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Disrupt the gut microbiome
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Impact bone health over time
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Increase susceptibility to certain infections
That doesn’t mean you should never take antacids, though it’s good to be aware of the potential drawbacks of regular use. Rather than always relying on a short-term tool, we prefer a holistic approach to support the body.
