Summary: In men with type 2 diabetes, combining 12 weeks of structured exercise with broccoli sprout supplementation improved apolipoproteins and glycaemic markers more than either alone, with the benefit driven mainly by exercise and no adverse effects reported.
PICO Summary
| Element | Detail |
|---|---|
| Population | 44 men with type 2 diabetes, randomised to four groups. |
| Intervention | 12 weeks of aerobic plus resistance training (3/week, 60–70% 1RM/VO₂peak) plus 10 g/day broccoli sprout supplement after meals. |
| Comparison | No-intervention control; training only; supplement only. |
| Outcome | Combined arm showed the largest gains: ApoA-I +44.9 mg/dL, ApoB-100 -48.3 mg/dL, ApoJ -44.1 mg/dL, with significant falls in glucose, insulin and HOMA-IR. Effect-size analysis indicated benefit was primarily exercise-driven. |
Exercise + broccoli sprouts in type 2 diabetes
RCT · type 2 diabetes · 12 weeks
Combining 12 weeks of exercise with broccoli sprouts improved apolipoproteins and glycaemia more than either alone, but the gain was largely exercise-driven. Surrogate markers only, 44 men, 12 weeks.
Expert Commentary
The honest story of this trial is told in its own effect sizes, and I appreciate that the authors say it plainly: the benefit was primarily driven by exercise, with the broccoli sprouts a complementary and less consistent add-on. That framing matches my clinical instinct, because structured training is already a cornerstone of diabetes care with reliable effects on insulin sensitivity and lipids, whereas sulforaphane remains a preliminary glucose-lowering signal at best. The four-arm design is a strength, letting me see the supplement’s modest standalone contribution rather than a blurred combination. The apolipoprotein detail is a nice touch too, since ApoB tells me more about atherogenic risk than a standard panel. My caution is the familiar set: 44 men only, twelve weeks, surrogate biomarkers, and a supplement whose sulforaphane content is hard to standardise. Can I use this with my patients? Yes, but with the emphasis exactly where the data put it, prioritise the exercise, treat broccoli sprouts as a harmless extra for the keen, and never let either displace glucose-lowering medication. I would want hard outcomes and a mixed-sex population before saying more.
References
Delfan M, Gharedaghi M, Zeynali F, et al. Combined effects of exercise and broccoli supplementation on metabolic and lipoprotein biomarkers in adults with type 2 diabetes: a randomized controlled trial. Nutrients. 2025;17(17):2735. doi:10.3390/nu17172735