Hormonal
Tree nut consumption does not significantly affect fasting insulin or HOMA-IR levels in individuals with type 2 diabetes, although the trend favors improvement.
While tree nuts help lower blood sugar (HbA1c) in people with diabetes, they may not significantly change insulin resistance markers (HOMA-IR) or fasting insulin levels in the short term. This doesn't mean they aren't beneficial, but it highlights that glycemic control and insulin resistance are distinct metrics.
No significant treatment effects were observed for fasting insulin and HOMA-IR, however the direction of effect favoured tree nuts.
Why this rating
Based on pooled RCT data, but limited by heterogeneity and lack of significance.
Source
Effect of Tree Nuts on Glycemic Control in Diabetes: A Systematic Review and Meta-Analysis of Randomized Controlled Dietary Trials
Effie Viguiliouk et al. · PLoS ONE · 2014
DOI 10.1371/journal.pone.0103376
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