Ifyou'reanAmerican,youmaytakein3,400mgofsaltperday.That'sfarmorethan2,300mg.Andit's15timesasmuchasthehumanbodyneeds.

Averagesaltintake(摄入量)hasincreasedabout50%sincethe1970s,largely1we'reeatingmoreconvenientfoods.Andasmakersofprocessedfoodhavecutdownonfatandsugar,they'veoftenadded2salt.

Toomuchsaltcancauseosteoporosis(骨质疏松症)andstomachcancer.3,itraisesbloodpressure,which4about850,000Americansayear.

“Aftersmoking,highbloodpressureistheleading5ofdeath,”saysNewYorkCityHealthCommissionerThomas.Heisencouragingmakersofpackagedfoodsandrestaurantstogradually6theirsaltby50%overthenext10years.TheCDC(疾病控制中心)thinksthatitcouldsave150,000livesand＄10billioninhealthcareayear.

Some50millionAmericanshavehypertension(高血压).HypertensionismorecommonamongAfrican-Americansthanwhites.Nearly90%ofAmericansdevelopit.

Withthatinmind,theCDCisencouragingpeopletofollowastricterguidelineof71,500mgofsaltaday.

About80%ofAmericans'saltintakecomesfromprocessedfoodsandrestaurantmeals;only20%comesfromsaltusedinhomecooking.Butcuttingsaltfromprocessedfoodisn'teasy.

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