Journal
BRITISH JOURNAL OF NUTRITION
Volume 125, Issue 10, Pages 1166-1176Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0007114520003426
Keywords
Dietary fibre; Inflammation; Adolescence; Depressive symptoms; Raine Study
Categories
Funding
- University of Western Australia
- Curtin University
- Telethon Kids Institute
- Women and Infants Research Foundation
- Edith Cowan University
- Murdoch University
- University of Notre Dame Australia
- Raine Medical Research Foundation
- National Health and Medical Research Council of Australia (NHMRC)
- Heart Foundation Beyond Blue Strategic Research Program [G08P4036 2009-2012]
- Raine Medical Research Foundation at The University of Western Australia
- NHMRC
- Telstra Research Foundation
- Western Australian Health Promotion Foundation
- Australian Rotary Health Research Fund
- Commonwealth Scientific and Industrial Research Organization
- NHMRC [003209, 211912, 353514, 403981, 1136046, 1148793]
- National Health and Medical Research Council of Australia [1148793, 1136046] Funding Source: NHMRC
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Depression is a major cause of disability in adolescents. Higher dietary fibre intake has been associated with lower depressive symptoms in adults, but the association in adolescents may be more reflective of overall diet quality than an independent effect of fibre intake.
Depression is a major cause of disability in adolescents. Higher dietary fibre intake has been associated with lower depressive symptoms in adults, but there is a lack of research in adolescents. We examined the association between dietary fibre intake (Commonwealth Scientific and Industrial Research Organisation (CSIRO) FFQ) and depressive symptoms (Beck Depression Inventory for Youth) in adolescents with prospective data from the Raine Study Gen2 14- and 17-year follow-ups (n 1260 and 653). Odds of moderate/extreme (clinically relevant) depressive symptoms by quartile of fibre intake were calculated using mixed-effects logistic regression for all participants, in a paired sample without moderate/extreme depressive symptoms at 14 years and in a sub-sample of participants with available inflammatory data at the ages of 14 and 17 years (n 718 and 547). Odds of moderate/extreme depressive symptoms were lower in the fourth (highest) quartile of overall fibre intake (OR 0 center dot 273, 95 % CI 0 center dot 09, 0 center dot 81) compared with the first (lowest) quartile, adjusting for sex, age, energy intake, adiposity, and family and lifestyle factors. However, further adjustment for dietary patterns attenuated the results. Associations of depressive symptoms with cereal or fruit and vegetable fibre intake were not significant in the final model. Adjustment for inflammation had no effect on OR. The association between a higher dietary fibre intake and lower odds of clinically relevant depressive symptoms may be more reflective of a high-fibre diet with all its accompanying nutrients than of an independent effect of fibre.
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