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Sodium and BP
A common notion about high blood pressure is that sodium causes it. In some people with existing high blood pressure, excessive sodium intake can magnify the problem. About 30 to 40 percent of those with hypertension are sodium-sensitive. For these individuals, even moderate amounts of sodium can increase their blood pressure further. Obviously, these people should regulate their sodium intake while they are searching for the cause of sodium sensitivity (often an adrenal-associated problem). But salt modification for those who have normal blood pressure is not necessary, as sodium will not raise blood pressure in healthy individuals.
As a necessary nutrient, sodium is essential for all athletes. Overtraining often results in adrenal gland dysfunction causing excess sodium loss, which requires more sodium intake through the diet. An average healthy man of 150 pounds has about 9,000 milligrams of sodium in his body. One-third of this is as part of healthy bones and most of the remaining two-thirds surround the cells throughout the rest of the body, where sodium is a major player in cell regulation. Sodium also helps regulate the acid-alkaline (pH) balance, water balance, the heartbeat and other muscle contractions, sugar metabolism, and even blood-pressure balance.
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