Sodium intake was varied in 182 normotensive volunteers. 2. systolic blood pressure rose by 3.3 (s.e.m. = 0.9) mmHg supine, 2.8 (s.e.m. = 0.7) mmHg erect. 3. Diastolic blood pressure rose by 2.7 (s.e.m. = 0.8) mmHg supine, 2.6 (s.e.m. = 0.8) mmHg erect. 4. In people over 50 y the rise was 12.4/8.1 mmHg (supine) and 9.1/7.1 mmHg (erect). 5. Blood pressure rose as sodium intake increased. Most of the rise was in the older patients but about 25% of younger patients were sensitive to sodium.
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Myers et al. (1982) studied this question.
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