1. Blood biomarkers of trans-fatty acid intake among Nigerian adults in the Federal Capital Territory: a cross-sectional study.
- Author
-
Marklund M, Billyrose S, Orji IA, Ikechukwu-Orji MU, Okoro C, Obagha C, Iyer G, Jamro EL, Ojo A, Harris WS, Wu JH, Hirschhorn LR, Van Horn L, Huffman MD, and Ojji DB
- Subjects
- Humans, Male, Female, Nigeria, Cross-Sectional Studies, Adult, Middle Aged, Young Adult, Trans Fatty Acids blood, Biomarkers blood
- Abstract
Background: Intake of trans-fatty acids (TFAs) is an established risk factor for cardiovascular disease. In April 2023, Nigeria passed regulations limiting TFA content in foods, fats, and oils, but the current level of TFA exposure in the Nigerian population is unknown., Objectives: To quantify trans-fatty acid (TFA) biomarkers in dried blood spots from Nigerian adults in the Federal Capital Territory before policy enforcement, establish baseline levels for future evaluations, assess subgroup variations by demographic and socioeconomic factors, and compare TFA levels with data from 30 countries worldwide., Methods: We used gas chromatography to measure TFA content in dried blood spots from adults participating in a cross-sectional household survey using a representative sampling frame. Individual TFA (t-16:1, t-18:1, and t- 18:2) and their total were expressed as percentage of total fatty acids. We assessed differences in TFA levels between subgroups based on sex, age, body mass index (BMI), education, income, and local government area using multivariable-adjusted linear regression models. Mean TFA levels were compared with samples from individuals in 30 countries., Results: In 213 adults (62% females; mean age: 36 y, mean BMI: 25.9 kg/m
2 ), the mean TFA level in dried blood spots was 0.61% of total fatty acids (range: 0.23%-1.31%). In multivariable-adjusted models, TFA levels were higher in younger adults {<30 y compared with ≥42 y, 0.07% [95% confidence interval (CI): 0.00, 0.15], P = 0.047}, those without a high school degree [compared with higher education, 0.08% (95% CI: 0.01, 0.16), P = 0.023], and residents of Abuja Municipal Area Council [compared with residents in Gwagwalada, 0.12% (95% CI: 0.05, 0.20), P = 0.001]. Total TFA levels were comparable with international samples, but t-16:1 and t-18:1 appeared lower, whereas t-18:2 appeared greater (52% of all TFA), in the Nigerian samples., Conclusions: These results provide a baseline assessment of TFA exposure in Nigerian adults to evaluate implementation and effect of national regulation passed in 2023. The observed subgroup differences may help identify subpopulations for targeted interventions to reduce TFA intake., Competing Interests: Conflict of interest MM reports grant support from Resolve To Save Lives and The World Health Organization, and travel support from the Nordic Dairy Congress 2022, all outside of the present work. LRH and LVH are researchers affiliated with Northwestern University Robert J. Havey Institute for Global Health, who funded this study; the authors alone are responsible for the views expressed in this publication, and they do not necessarily represent the views, decisions, or policies of the funder. MDH has received travel support from the World Heart Federation and consulting fees from PwC Switzerland. MDH has an appointment at The George Institute for Global Health, which has a patent, license, and has received investment funding with intent to commercialize fixed-dose combination therapy through its social enterprise business, George Medicines. MDH has pending patents for heart failure polypills. The other authors report no conflicts of interest., (Copyright © 2024 American Society for Nutrition. Published by Elsevier Inc. All rights reserved.)- Published
- 2025
- Full Text
- View/download PDF