Journal
NUTRIENTS
Volume 15, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/nu15061410
Keywords
vascular function; flow-mediated dilation; carotid-femoral pulse wave velocity; cardiovascular disease risk; beef; diet; cholesterol; blood pressure
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This study aimed to evaluate the vascular impact of red meat and found that adding low-fat (about 5% fat) or high-fat (about 25% fat) ground beef to the diet did not have a negative effect on vascular function.
Red meat is stigmatized as an unhealthy protein choice; however, its impacts on vascular function have not been evaluated. We aimed to measure the vascular impact of adding either low-fat (similar to 5% fat) ground beef (LFB) or high-fat (similar to 25% fat) ground beef (HFB) to a habitual diet in free-living men. Twenty-three males (39.9 +/- 10.8 years, 177.5 +/- 6.7 cm, 97.3 +/- 25.0 kg) participated in this double-blind crossover study. Assessment of vascular function and aerobic capacity were measured at entry and in the last week of each intervention and washout period. Participants then completed two 5-week dietary interventions (LFB or HFB; 5 patties/week) in a randomized order with a 4-week washout. Data were analyzed via 2 x 2 repeated-measures ANOVA (p < 0.05). The HFB intervention improved FMD relative to all other time points, while lowering systolic (SBP) and diastolic blood pressure (DBP) relative to entry. Neither the HFB nor the LFB altered pulse wave velocity. The addition of either low- or high-fat ground beef did not negatively alter vascular function. In fact, consuming HFB improved FMD and BP values, which may be mediated by lowering LDL-C concentrations.
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