Question

Why do doctor advice less take of common salt in case of high blood pressure?

Answer 1

large amount of salt in food results in fluid retention.when the the volume of water increases the blood level also increases  so does the blood pressure heart does the extra work to overcome the resistance of the blood vessels'
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Answer 2

Explanation:

Eat less salt to lower blood pressure. Eating too much salt is the biggest cause of high blood pressure - the more salt you eat, the higher your blood pressure will be. Salt makes your body retain water. If you eat too much, the extra water stored in your body raises your blood pressure

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