Mixed
Increasing whole-grain intake to 60-120g/day for 16 weeks in overweight, low-consumer adults does not significantly improve cardiovascular disease risk markers (LDL, blood pressure, inflammation, insulin sensitivity) compared to a control diet.
If you are overweight and rarely eat whole grains, switching to 60-120g of whole grains daily for 4 months is unlikely to improve your cholesterol, blood pressure, or inflammation markers on its own. Public health messages may need to clarify that whole grains are part of a broader healthy lifestyle, not a magic bullet for CVD risk in this population.
Although reported WG intake was significantly increased among intervention groups, and demonstrated good participant compliance, there were no significant differences in any markers of CVD risk between groups.
Why this rating
Large-scale (n=316), randomized, controlled dietary intervention with good compliance, though duration (16 weeks) may be short for lifelong disease trajectory changes.
Source
Markers of cardiovascular risk are not changed by increased whole-grain intake: the WHOLEheart study, a randomised, controlled dietary intervention
Iain A. Brownlee et al. · British Journal Of Nutrition · 2010
DOI 10.1017/s0007114510000644
Related findings · Mixed
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