Life's Simple 7 and Peripheral Artery Disease Risk: The Atherosclerosis Risk in Communities Study

Abstract Background Few studies have investigated the association of magnesium levels with incident peripheral artery disease (PAD) despite emerging evidence of magnesium contributing to vascular calcification. Moreover, no data are available on whether the magnesium–PAD relationship is independent of or modified by kidney function. Methods A cohort of 11 839 participants free of PAD in the Atherosclerosis Risk in Communities Study at Visit 2 (1990–92) was studied. We investigated the association of serum magnesium and other bone–mineral metabolism markers [calcium, phosphorus, intact parathyroid hormone (iPTH) and intact fibroblast growth factor-23] with incident PAD using multivariable Cox proportional hazards regression. Results Over a median of 23 years, there were 471 cases of incident PAD. The hazard ratio for incident PAD in Quartile 1 (<1.5 mEq/L) versus Quartile 4 (>1.7 mEq/L) of magnesium was 1.96 (95% confidence interval 1.40–2.74) after adjustment for potential confounders. Lower magnesium levels were associated with greater incidence of PAD, particularly in those with estimated glomerular filtration rate (eGFR) ≥60 mL/min/1.73 m2 (n = 11 606). In contrast, the association was largely flat in those with eGFR <60 mL/min/1.73 m2 (n = 233) with P-for-interaction 0.03. Among bone–mineral metabolism markers, only higher iPTH showed an interaction with kidney function (P-for-interaction 0.01) and iPTH >65 pg/mL was significantly related to PAD only in those with eGFR <60 mL/min/1.73 m2. Conclusions Lower magnesium was independently associated with incident PAD, but this association was significantly weaker in those with reduced kidney function. In contrast, higher iPTH levels were particularly related to PAD risk in this clinical population.

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Greater Adherence to Life’s Simple 7 Is Associated With Less Arterial Stiffness: the Atherosclerosis Risk in Communities (ARIC) Study

American Journal of Hypertension ◽

10.1093/ajh/hpz057 ◽

2019 ◽

Vol 32 (8) ◽

pp. 769-776 ◽

Cited By ~ 2

Author(s):

Abayomi O Oyenuga ◽

Aaron R Folsom ◽

Susan Cheng ◽

Hirofumi Tanaka ◽

Michelle L Meyer

Keyword(s):

Cardiovascular Disease ◽

Arterial Stiffness ◽

Cardiovascular Health ◽

Middle Age ◽

Disease Risk ◽

Study Cohort ◽

Atherosclerosis Risk In Communities ◽

Atherosclerosis Risk ◽

Life’S Simple 7 ◽

Life's Simple 7

Abstract Background Greater arterial stiffness is associated independently with increased cardiovascular disease risk. The American Heart Association (AHA) has recommended following “Life’s Simple 7 (LS7)” to optimize cardiovascular health; we tested whether better LS7 in middle age is associated with less arterial stiffness in later life. Methods We studied 4,232 black and white participants aged 45–64 years at the baseline (1987–89) visit of the Atherosclerosis Risk in Communities Study cohort who also had arterial stiffness measured in 2011–13 (mean ± SD interval: 23.6 ± 1.0 years). We calculated a 14-point summary score for baseline LS7 and classified participants as having “poor” (0–4), “average” (5–9), or “ideal” (10–14) cardiovascular health. We used logistic regression to calculate odds ratios (ORs) and 95% confidence intervals (95% CI) for arterial stiffening: a high carotid-femoral pulse wave velocity (cfPWV, ≥13.23 m/s) or a high central pulse pressure (central PP, ≥ 82.35 mm Hg). Results The age, race, sex, and heart rate-adjusted ORs (95% CI) for high cfPWV in the “ideal,” “average,” and “poor” LS7 summary categories were 1 (Reference), 1.30 (1.11, 1.53), and 1.68 (1.10,2.56), respectively (P-trend = 0.0003). Similarly, the adjusted ORs (95% CI) for high central PP across LS7 summary categories were 1 (Reference), 1.48 (1.27, 1.74), and 1.63 (1.04, 2.56), respectively (P-trend <0.0001). Conclusion Greater LS7 score in middle age is associated with less arterial stiffness 2–3 decades later. These findings further support the AHA recommendation to follow LS7 for cardiovascular disease prevention.

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