When healthy young men eat a lot more salt, their kidneys filter blood faster — up to 40% more — even though their blood pressure only goes up a tiny bit.

When healthy young men eat a lot more salt for a week, their kidneys filter blood faster — not because their blood pressure goes up, but because their kidneys just work harder to get rid of the extra salt.

When healthy young men eat a lot more salt, their kidneys filter blood faster — but their blood pressure doesn’t go up much, showing their kidneys can handle extra salt without straining.

A study found that eating more salt didn't really change how well the tiny filters in your kidneys work in healthy Japanese adults, even though people who ate more protein also tended to eat more salt.

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.

Even if you eat a lot more or a lot less salt for a week, your body still pees out about the same amount of potassium — your kidneys keep potassium steady no matter how much salt you consume.