6 doctors weighed in:

Why does pregnancy increase my chance of gallstones?

6 doctors weighed in
Dr. Michael Carson
Internal Medicine
3 doctors agree

In brief: Hormonal Effects

The gallbladder is a muscular sac that essentially squirts bile into the intestines to help digestion.
The increased estrogen levels of pregnancy relax the muscle a bit, so the bile sits around more in the gallbladder. This "stagnant" bile, combined with some changes in the chemicals in bile related to pregnancy favor more stones forming than when you are not pregnant.

In brief: Hormonal Effects

The gallbladder is a muscular sac that essentially squirts bile into the intestines to help digestion.
The increased estrogen levels of pregnancy relax the muscle a bit, so the bile sits around more in the gallbladder. This "stagnant" bile, combined with some changes in the chemicals in bile related to pregnancy favor more stones forming than when you are not pregnant.
Dr. Michael Carson
Dr. Michael Carson
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1 doctor agrees

In brief: Hormone changes

Gallbladder works less well and stones develop easier.

In brief: Hormone changes

Gallbladder works less well and stones develop easier.
Dr. Terry Simpson
Dr. Terry Simpson
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