Journal of Hypertension

Skip Navigation LinksHome > November 2014 - Volume 32 - Issue 11 > Five-year weight changes associate with blood pressure alter...
Journal of Hypertension:
doi: 10.1097/HJH.0000000000000317

Five-year weight changes associate with blood pressure alterations independent of changes in serum insulin

Seven, Ekima,b; Husemoen, Lise L.N.b; Wachtell, Kristiana,c; Ibsen, Hansc,d; Linneberg, Allanb,c; Jeppesen, Jørgen L.a,c

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Objective: In overweight-related hypertension, the effect of weight changes on blood pressure (BP) is believed to be mediated by insulin. To test this hypothesis, we studied 5-year changes in weight, BP, and insulin in a general population of Danish adults (n = 3443; mean age 45.7 ± 7.6 years).

Methods: We assessed the glucose–insulin metabolism by a standard oral glucose tolerance test. We divided the antihypertensive and antidiabetic medication-free participants into three groups: weight loss (n = 515), weight stable (n = 1778), and weight gain (n = 1150).

Results: Losing on average 6.5 kg body weight, the weight loss group experienced a 28.2% reduction [(95% confidence interval [CI] −31 to −25); P < 0.001] in fasting insulin and a 23.9% reduction [(95% CI −28 to −19); P < 0.001] in 2-h insulin. Gaining on average 6.4 kg, the weight gain group experienced a 12.5% increase [(95% CI 9 to 16); P < 0.001] in fasting insulin and 32.8% increase [(95% CI 28 to 38); P < 0.001] in 2-h insulin. Using linear regression adjusting for differences in sex, age, family history of hypertension, baseline BMI, SBP and DBP, lifestyle risk factors, and their 5-year changes, weight loss was associated with a decrease in SBP of −1.8 mmHg (95% CI −2.8 to −0.7), whereas weight gain with an increase in SBP of 1.9 mmHg (95% CI 1.2 to 2.6), both with P less than 0.001. Adding fasting insulin, 2-h insulin, Δfasting insulin, and Δ2-h insulin only marginally attenuated the association, and furthermore, none of the insulin variables was significantly associated with SBP or DBP (P ≥ 0.08). The results for changes in DBP were similar to SBP.

Conclusion: Five-year weight changes associate with BP alterations independent of the insulin changes.

© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins


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