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  4. I’ve had great success with drinking potato starch and water before bed. Resistant fiber! Yes, to help sleep. I had a friend who tried it but woke at three a.m. super-hungry. She’s on metformin. Would that drug affect how resistant starch is used by the body?

I’ve had great success with drinking potato starch and water before bed. Resistant fiber! Yes, to help sleep. I had a friend who tried it but woke at three a.m. super-hungry. She’s on metformin. Would that drug affect how resistant starch is used by the body?

Dr. Amy Nett: What I might think about here, I don’t know if she’s on metformin for polycystic ovarian syndrome or if she has diabetes or prediabetes, but what I’m thinking about there is resistant starch can potentially lower blood sugar. It can stabilize blood sugar actually, so I wonder if she needs to decrease her metformin dose. So it may be that if she is increasing her potato starch intake or resistant starch intake, it’s possible that her blood sugar is dipping a little bit lower than it should be, so you might have her try using a glucometer. She either try decreasing the metformin dose and seeing how things go, but I would also think about bringing a glucometer into the picture to monitor the blood sugar and see if the dose of metformin needs to be adjusted.

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