Salt Strikes Swiftly

"A high-salt meal can stiffen your arteries within 30 minutes.
Arteries that lose their ability to expand when they need to can
increase the risk of high blood pressure, heart attack, stroke, and
cognitive decline.
On two separate occasions, researchers fed 16 healthy men and women
with normal blood pressure a meal that contained either 115 milligrams
of sodium or 1,495 mg (a full days worth). At 30 minutes and 60 minutes
after the high-salt meal, the ability of the participants' arteries to
expand was more impaired than it was after the low-salt meal. Make sure
to cut back on salt."

-Nutrition Action Healthletter, April 2011