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So why would a cold night matter?
When you boil rice, the starch soaks up water and swells open. Your gut breaks that open starch into sugar fast, and the sugar pours into your blood.
That is why plain white rice scores about 73 on the glycemic index, close to white bread.
But the starch changes when cooked rice gets cold. Part of it pulls back into tight, knotted strands that your gut enzymes can’t cut, and scientists call this resistant starch.
In other words, some of that rice stops acting like sugar and starts acting more like fiber.
And heat does not undo it. When I warmed the rice back up, most of those tight strands stayed tight.
That’s the part nobody told me.
My doctor told me to cut back on rice. He never mentioned that my fridge could change how my body handles it.
I owe you the fine print, too.
This hack is not magic. Some studies found a smaller drop than mine, and a couple found none, so your rice, your portion, and your body will shape your number.
If you take insulin, talk to your care team first. In one study, people on insulin had more lows after cooled rice because the meal gave them less sugar than their dose expected.
Anyway, for most of us, a bowl in the fridge costs nothing to try.
The trick may work on pasta and potatoes as well, since they carry a similar starch. Rice is where the research is strongest.
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