Findings

What do systematic reviews say?

252 questions · 271 findings · 20 reviews

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No studies found 39 · 14.4%GRADE not reported 31 · 11.4%Very low 53 · 19.6%Low 86 · 31.7%Moderate 45 · 16.6%High 17 · 6.3%

Dietary interventions vs control

Fibre intake assessed as g · people living beyond cancer

1 finding from 1 review

Dietary interventions for adult cancer survivors 2019 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 3127 participants
Very low

Dietary interventions vs control

Body‐mass index (BMI) · people living beyond cancer

1 finding from 1 review

Dietary interventions for adult cancer survivors 2019 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 777 participants
Moderate

Dietary interventions vs control

Waist‐to‐hip circumference assessed as cm · people living beyond cancer

1 finding from 1 review

Dietary interventions for adult cancer survivors 2019 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 106 participants
Low

Dietary interventions vs standard practice

School achievement: Average achievement across subjects taught at school · Children and adolescents with obesity or overweight

1 finding from 1 review

Physical activity, diet and other behavioural interventions for improving cognition and school achievement in children… 2018 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 382 participants
Low

Dietary interventions vs standard practice

School achievement: Mathematics · Children and adolescents with obesity or overweight

1 finding from 1 review

Physical activity, diet and other behavioural interventions for improving cognition and school achievement in children… 2018 · Cochrane Headline outcomes only
no estimate extracted
1 study · 76 participants
Low

Dietary interventions vs standard practice

School achievement: Reading · Children and adolescents with obesity or overweight

1 finding from 1 review

Physical activity, diet and other behavioural interventions for improving cognition and school achievement in children… 2018 · Cochrane Headline outcomes only
no estimate extracted
1 study · 67 participants
Low

Dietary interventions vs standard practice

School achievement: Additional educational support needs · Children and adolescents with obesity or overweight

1 finding from 1 review

Physical activity, diet and other behavioural interventions for improving cognition and school achievement in children… 2018 · Cochrane Headline outcomes only
no estimate extracted
0 studies · 0 participants
GRADE not reported

Dietary interventions vs standard practice

Cognitive function: Composite executive functions · Children and adolescents with obesity or overweight

1 finding from 1 review

Physical activity, diet and other behavioural interventions for improving cognition and school achievement in children… 2018 · Cochrane Headline outcomes only
no estimate extracted
0 studies · 0 participants
GRADE not reported

Dietary interventions vs standard practice

Cognitive function: Inhibition control · Children and adolescents with obesity or overweight

1 finding from 1 review

Physical activity, diet and other behavioural interventions for improving cognition and school achievement in children… 2018 · Cochrane Headline outcomes only
no estimate extracted
0 studies · 0 participants
GRADE not reported

Dietary interventions vs standard practice

Adverse events · Children and adolescents with obesity or overweight

1 finding from 1 review

Physical activity, diet and other behavioural interventions for improving cognition and school achievement in children… 2018 · Cochrane Headline outcomes only
no estimate extracted
0 studies · 0 participants
GRADE not reported

Dietary interventions vs diet and physical activity interventions combined

Body‐mass index (BMI) · children aged 6‐12 years

1 finding from 1 review

Interventions for preventing obesity in children 2019 · Cochrane Headline outcomes only
no estimate extracted
1 study · 3971 participants
High

Dietary interventions vs diet and physical activity interventions combined

Body‐mass index z score (zBMI) · children aged 6‐12 years

1 finding from 1 review

Interventions for preventing obesity in children 2019 · Cochrane Headline outcomes only
no estimate extracted
1 study · 3971 participants
High

Vegan dietary intervention vs no intervention or minimal intervention

CVD events ‐ not reported · people at high risk of CVD

The review found no eligible studies for this question.

1 finding from 1 review

Vegan dietary pattern for the primary and secondary prevention of cardiovascular diseases 2021 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vegan dietary intervention vs no intervention or minimal intervention

Total cholesterol (mmol/L), change from baseline · people at high risk of CVD

1 finding from 1 review

Vegan dietary pattern for the primary and secondary prevention of cardiovascular diseases 2021 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 449 participants
Moderate

Vegan dietary intervention vs no intervention or minimal intervention

LDL cholesterol (mmol/L), change from baseline · people at high risk of CVD

1 finding from 1 review

Vegan dietary pattern for the primary and secondary prevention of cardiovascular diseases 2021 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 449 participants
Moderate

Vegan dietary intervention vs no intervention or minimal intervention

HDL cholesterol (mmol/L), change from baseline · people at high risk of CVD

1 finding from 1 review

Vegan dietary pattern for the primary and secondary prevention of cardiovascular diseases 2021 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 449 participants
Moderate

Vegan dietary intervention vs no intervention or minimal intervention

Triglycerides (mmol/L), change from baseline · people at high risk of CVD

1 finding from 1 review

Vegan dietary pattern for the primary and secondary prevention of cardiovascular diseases 2021 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 449 participants
Moderate

Vegan dietary intervention vs no intervention or minimal intervention

Systolic blood pressure (mmHg), change from baseline · people at high risk of CVD

1 finding from 1 review

Vegan dietary pattern for the primary and secondary prevention of cardiovascular diseases 2021 · Cochrane Headline outcomes only
no estimate extracted
3 studies · 374 participants
Low

Vegan dietary intervention vs no intervention or minimal intervention

Diastolic blood pressure (mmHg), change from baseline · people at high risk of CVD

1 finding from 1 review

Vegan dietary pattern for the primary and secondary prevention of cardiovascular diseases 2021 · Cochrane Headline outcomes only
no estimate extracted
3 studies · 372 participants
Low

Dietary advice vs standard‐of‐care therapy

Gestational diabetes · pregnant women

It is very uncertain whether dietary advice interventions changes gestational diabetes compared with standard care (maternal outcomes) (very low certainty).

1 finding from 1 review

Dietary advice interventions in pregnancy for preventing gestational diabetes mellitus 2017 · Cochrane Headline outcomes only
RR 0.6 [0.35, 1.04]
5 studies · 1279 participants
Very low