Findings

What do systematic reviews say?

3 questions · 3 findings · 2 reviews · Heart

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 1 · 33.3%Low 1 · 33.3%Moderate 1 · 33.3%High 0 · 0%

Higher polyunsaturated fatty acid (PUFA) vs lower PUFA

Atrial fibrillation and arrhythmias · people with or without existing cardiovascular disease, men and women

It is very uncertain whether higher polyunsaturated fatty acid (PUFA) changes atrial fibrillation and arrhythmias compared with lower PUFA (very low certainty).

1 finding from 1 review

Polyunsaturated fatty acids for the primary and secondary prevention of cardiovascular disease 2018 · Cochrane Headline outcomes only
RR 0.87 [0.72, 1.06]
11 studies · 11692 participants
Very low

High vs low ALA omega‐3 fats

Arrhythmias · adults with or without existing CVD

High probably leads to lower arrhythmias compared with low alpha‐linolenic acid omega‐3 fats (moderate certainty).

1 finding from 1 review

Omega‐3 fatty acids for the primary and secondary prevention of cardiovascular disease 2020 · Cochrane Headline outcomes only
RR 0.73 [0.55, 0.97]
2 studies · 4912 participants
Moderate

High vs low long‐chain omega‐3 fats

Arrhythmias · adults with or without existing CVD

High showed no clear difference in arrhythmias compared with low long‐chain omega‐3 fats (low certainty).

1 finding from 1 review

Omega‐3 fatty acids for the primary and secondary prevention of cardiovascular disease 2020 · Cochrane Headline outcomes only
RR 0.99 [0.92, 1.06]
30 studies · 77990 participants
Low