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When you look at your food,some ingredients are easy to see.But your meals are also filled with ingredients you can't see.

Salt is a perfect example of an ingredient that you might not notice,even when you eat a lot of it.But doctors have warned patients that too much salt can be bad for their hearts.Still,most people continue to eat too much salt.____1_____.Often,you can't even taste that the salt is there.

____2_____,and parents haven't worried too much about the salt their kids eat.Like most kids,you probably don't spend much time worrying about heart disease.After all,it tends to become more common as people reach middle age and older.But doctors say it's never too early to start thinking about your heart--or about your salt.

Salt is made up of two elements:sodium and chlorine.The chlorine part of salt isn't so important.It's the sodium that can bring trouble.____3_____.But the amount of sodium we actually need is tiny:about 500 mg or less than a quarter teaspoon of salt.

But the average American eats about twice the recommended daily amount.This worries doctors because too much sodium can cause the body to produce more blood.

____4_____.This leads to a rise in blood pressure.High blood pressure often leads to heart disease.About ninety percent of adult Americans develop heart disease in their lifetimes and it's a big problem.

Salt isn't the only cause of heart disease.Eating lots of junk thud,weighing too much and exercising too little also contribute to high blood pressure,but a large number of studies suggests that salt is a major player.And in a 2007 study,scientists turned up the first direct link between salt and heart disease.____5_____.Blood pressure has been going up over the past decade in children and teenagers in the US and many European countries.

A.And you might be surprised to learn just how much those hidden items affect your health.

B.That's because more than 75 percent of the salt we eat is bidden in restaurant meals or the fast food.

C.They found that curing down on salt now can lower a person's risk of heart disease 10 to 15 years in the future.

D.To pump the extra blood,the heart has to work extra hard.

E.We need a small amount of sodium to keep our muscles working and our nerves sending messages throughout the body.

F.Salt in proper amount can surely benefit people.

G.Heart trouble has long been considered to be a grown-up problem.

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