When healthy guys eat more carbs for a few days, their bodies hold onto more salt at first, but this doesn’t last past the first week.

If you eat a lot of salt—like 18 grams a day for 10 days—your body will pee out more salt and your blood will have a bit more salt too, which proves your body is responding as expected to the extra salt.

If you eat a lot of salt—like 18 grams a day for 10 days—your body will flush out more salt in your urine and also have a bit more salt in your blood, which proves you actually ate the salty food they gave you.

When healthy guys eat a diet high in carbs for a couple of weeks, their bodies initially hold onto more salt—but by week two, a key hormone that controls salt goes down, which might help stop blood pressure from rising.

When people who don’t get high blood pressure from salt eat more or less salt, their kidneys adjust how much salt they pee out—no matter if they’re male or female.

If people with type 2 diabetes eat less salt, their bodies pee out about 38 millimoles less sodium in a day, which means they’re actually following the low-salt diet.