Cochrane · systematic review · CD004192

Dietary interventions for multiple sclerosis‐related outcomes

Parks, NE, Jackson-Tarlton, CS, Vacchi, L, et al. · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
15
current version
GRADE rated
14
No studies
1
Included studies
NR
No studies 1 · 6.7%Ungraded 0 · 0%Very low 4 · 26.7%Low 8 · 53.3%Moderate 2 · 13.3%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Polyunsaturated fatty acid (PUFA) compared to monounsaturated fatty acid (MUFA) for multiple sclerosis (MS)

Population: adults with multiple sclerosis, defined by established criteria
5 questions
OutcomeEffectEvidenceStatus / GRADE
Relapse(assessed as number of participants experiencing relapse)
Polyunsaturated fatty acid (PUFA) vs monounsaturated fatty acid (MUFA)
RR 1.02 [0.88, 1.2]3 studies · 217 participantsVery low
Downgraded: risk of bias, imprecision
Change in validated disability scale (
Polyunsaturated fatty acid (PUFA) vs monounsaturated fatty acid (MUFA)
no estimate extracted2 studies · 102 participantsVery low
Downgraded: risk of bias, imprecision
Global impression of deterioration (investigator defined global impression of deterioration)
Polyunsaturated fatty acid (PUFA) vs monounsaturated fatty acid (MUFA)
RR 0.85 [0.71, 1.03]4 studies · 542 participantsLow
Downgraded: risk of bias
MRI activity ‐ not measured
Polyunsaturated fatty acid (PUFA) vs monounsaturated fatty acid (MUFA)
no estimate extractedNRNo studies
SAEs (assessed as number of participants experiencing a SAE)
Polyunsaturated fatty acid (PUFA) vs monounsaturated fatty acid (MUFA)
no estimate extracted1 study · 40 participantsLow
Downgraded: risk of bias, imprecision

Omega‐3 compared to omega‐6 for multiple sclerosis (MS)

Population: adults with multiple sclerosis, defined by established criteria
5 questions
OutcomeEffectEvidenceStatus / GRADE
Relapse(assessed as number of participants experiencing relapse)
Omega‐3 vs omega‐6
RR 1.02 [0.62, 1.66]2 studies · 129 participantsLow
Downgraded: risk of bias, imprecision
Change in validated disability scale (
Omega‐3 vs omega‐6
no estimate extracted3 studies · 166 participantsLow
Downgraded: risk of bias, imprecision
Global impression of deterioration (investigator defined global impression of deterioration)
Omega‐3 vs omega‐6
RR 0.99 [0.51, 1.91]1 study · 86 participantsModerate
Downgraded: imprecision
MRI activity(assessed by new gadolinium‐enhancing lesions)
Omega‐3 vs omega‐6
no estimate extracted1 study · 86 participantsModerate
Downgraded: imprecision
SAEs (assessed as number of participants experiencing a SAE)
Omega‐3 vs omega‐6
RR 1.12 [0.38, 3.31]4 studies · 230 participantsLow
Downgraded: risk of bias, imprecision

Antioxidant compared to placebo for multiple sclerosis (MS)

Population: adults with multiple sclerosis, defined by established criteria
5 questions
OutcomeEffectEvidenceStatus / GRADE
Relapse(assessed as number of participants experiencing relapse)
Antioxidant vs placebo
RR 0.98 [0.59, 1.64]4 studies · 345 participantsLow
Downgraded: risk of bias, imprecision
Change in validated disability scale (
Antioxidant vs placebo
no estimate extracted6 studies · 490 participantsVery low
Downgraded: risk of bias, inconsistency
Global impression of deterioration (investigator defined global impression of deterioration)
Antioxidant vs placebo
RR 0.99 [0.5, 1.93]2 studies · 190 participantsLow
Downgraded: risk of bias, imprecision
MRI activity(assessed as number of participants with gadolinium‐enhancing lesions)
Antioxidant vs placebo
RR 0.67 [0.09, 4.88]2 studies · 131 participantsVery low
Downgraded: risk of bias, imprecision, inconsistency
SAEs (assessed as number of participants experiencing a SAE)
Antioxidant vs placebo
RR 0.72 [0.17, 3.08]3 studies · 222 participantsLow
Downgraded: risk of bias, imprecision