High doses of riboflavin and the elimination of dietary red meat promote the recovery of some motor functions in Parkinson's disease patients.
Level 4 - case-series / case-control
Uncontrolled before-and-after case series
PubMed 14502375 · doi:10.1590/s0100-879x2003001000019
What was done
Nineteen outpatients with Parkinson's disease (Hoehn and Yahr stages I to V, mean age 66.2 ± 8.6 years) who had abnormal baseline riboflavin status completed a 6-month protocol consisting of oral riboflavin (30 mg every 8 hours) combined with the complete elimination of dietary red meat alongside their standard symptomatic medications. Blood riboflavin status was tracked, and motor capacity was evaluated monthly using a modified Hoehn and Yahr scoring system reported as a percentage.
What was found
Riboflavin blood levels normalized from 106.4 ± 34.9 to 179.2 ± 23 ng/ml after 1 month (measured in n = 9). All 19 patients who completed 6 months showed motor improvements during the first 3 months, with 5 continuing to improve through month 6. Average motor capacity increased from 44% at baseline to 71% at 6 months (P < 0.001). Yellowish urine was the only reported side effect.
Why it matters
This preliminary study suggested that targeting riboflavin status and dietary factors might support motor function in Parkinson's disease, proposing potential links to mitochondrial and oxidative mechanisms.
Limits
The study was a small, open-label trial without a control or placebo group, making it prone to placebo effects and observer bias. Out of 31 initial patients, 12 were excluded due to non-compliance or failure to complete 6 months, introducing substantial attrition bias. Because riboflavin supplementation and red meat elimination were introduced simultaneously, the individual contribution of each intervention cannot be distinguished.
Cited by
- partial Evidence shows that supporting mitochondria with cofactors including vitamin B2, vitamin B3, and magnesium is beneficial in Parkinson's disease.