Trial reportInternational journal of andrology2012
No effects of n-3 fatty acid supplementation on serum total testosterone levels in older men: the Alpha Omega Trial.
Trial report in International journal of andrology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 8 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 8 syntheses or guidelines pooled it, 23 citations in OpenAlex.
- Do "testosterone boosters" really increase serum total testosterone? A systematic review.International journal of impotence research · 2024Pooled it
- Marine-derived n-3 fatty acids therapy for stroke.The Cochrane database of systematic reviews · 2022Pooled it
- Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease.The Cochrane database of systematic reviews · 2020Pooled it
- Marine-derived n-3 fatty acids therapy for stroke.The Cochrane database of systematic reviews · 2019Pooled it
- Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease.The Cochrane database of systematic reviews · 2018Pooled it
- Polyunsaturated fatty acids for the primary and secondary prevention of cardiovascular disease.The Cochrane database of systematic reviews · 2018Pooled it
- Polyunsaturated fatty acids for the primary and secondary prevention of cardiovascular disease.The Cochrane database of systematic reviews · 2018Pooled it
- Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease.The Cochrane database of systematic reviews · 2018Pooled it
- Association Between Dietary Intake of Omega-3 Fatty Acids and Serum Testosterone in Adult Males: Results From NHANES 2011-2016 and 2021-2023.Food science & nutrition · 2025Article
- Oral Ingestion of Bean Sprouts Containing the HASPIN Inhibitor Coumestrol Increased Blood Testosterone Levels in Men.Biology · 2025Article
- Dietary fat quality and serum androgen concentrations in middle-aged men.European journal of clinical nutrition · 2024Article
- Sex-specific responses in glucose-insulin homeostasis and lipoprotein-lipid components after high-dose supplementation with marine n-3 PUFAs in abdominal obesity: a randomized double-blind crossover study.Frontiers in nutrition · 2023Article
- Testosterone-Associated Dietary Pattern Predicts Low Testosterone Levels and Hypogonadism.Nutrients · 2018Article
- Article
- Review
- Omega-3 fatty acids moderate effects of physical activity on cognitive function.Neuropsychologia · 2014Article
- Fatty acid intake in relation to reproductive hormones and testicular volume among young healthy men.Asian journal of andrologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
The intake of the n-3 fatty acids alpha-linolenic acid (ALA), acid (EPA) and docosahexaenoic acid (DHA) has been related to testosterone levels in epidemiological analyses. The aim of this study was to assess whether the n-3 fatty acids affects testosterone levels in post-myocardial infarction (MI) patients, who are at risk of testosterone deficiency. In a double-blind, placebo-controlled trial of low-dose supplementation of n-3 fatty acids, we included 1850 male post-MI patients aged 60-80 years who participated in the Alpha Omega Trial. Patients were randomly allocated to margarines that provided 400 mg/day of EPA-DHA (n = 453), 2 mg/day of ALA (n = 467), EPA-DHA plus ALA (n = 458), or placebo (n = 472). Serum testosterone levels were assessed at baseline and after 41 months using whole day blood samples obtained at the subjects' home or at the hospital. Subjects were on average age of 68.4 (SD 5.3) years old and had baseline mean serum total testosterone of 14.8 (SD 5.6) nmol/L. The four randomized groups did not differ for baseline characteristics. ALA, EPA-DHA, and EPA-DHA plus ALA supplementation did not affect serum total testosterone compared to placebo. Moreover, n-3 fatty acid supplementation did not affect the risk of incident testosterone deficiency (n = 76 with total testosterone <8.0 nmol/L). We conclude that n-3 fatty acids supplementation did not affect serum total testosterone in men who had had a MI.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.