Trondel Letters operates under a set of editorial principles established at founding. These govern how articles are researched, how sources are selected, how writers disclose interests, and how corrections are handled when errors are found.
Trondel Letters operates under the following editorial principles: articles are reviewed by at least one second editor before publication, sources are cited where appropriate, corrections are noted publicly, and writers disclose any commercial relationships that could influence their selection of subject matter.
The publication is an independent editorial resource focused on everyday wellness practices. It is not affiliated with any commercial, governmental, or institutional body, and does not receive funding from supplement manufacturers, sleep product companies, or related industries.
Articles published on Trondel Letters are editorial in nature and reflect the writers' observations on everyday wellness practices. The content is not intended as professional advice, nor as guidance for the management of any specific condition. Readers with specific concerns about their daily routines are encouraged to speak with a qualified wellness professional.
The publication focuses on the relationship between sleep quality, evening routines, and daily wellbeing. Topics include circadian rhythm and its influence on energy and appetite, sleep environment and its contribution to rest quality, deep sleep stage architecture, light exposure management, and the observed connection between sleep duration and body composition.
We do not cover topics that require individual professional assessment, nor do we present general wellness observations as directive guidance. Our editorial voice is observational — attending to patterns, reviewing available published research, and noting what is and is not well-understood in the literature.
“We recommend speaking with a qualified wellness or nutrition professional before introducing any new habit or routine to your daily life, particularly if you have specific requirements.”
Topics are selected based on reader interest, emerging published research, and gaps in widely-available editorial coverage. Before a writer begins drafting, a source review is conducted to identify peer-reviewed literature, well-regarded institutional publications, and relevant specialist commentary. Sources are assessed for recency, transparency of methodology, and absence of undisclosed commercial sponsorship.
Writers are required to disclose any commercial relationships — current or within the past twenty-four months — that could influence their perspective on the subject matter. This includes paid consultancy for wellness brands, affiliate arrangements, and sponsored content production for organisations in adjacent fields. Disclosure is confirmed in writing before assignment and revisited at submission.
Each article is reviewed by a second editor before publication. The review covers factual accuracy, consistency with cited sources, appropriate qualification of claims where evidence is limited or mixed, and adherence to the publication's editorial register. The second editor may request revisions, source additions, or the removal of claims that exceed what the cited evidence supports.
Published articles include inline references or a notes section indicating the primary sources consulted. Where a claim rests on a single study, this is acknowledged. Where the literature is mixed or contested, the article notes the disagreement rather than presenting a simplified conclusion. Publication dates are displayed prominently so readers can assess the currency of source material.
When an error is identified — whether by a reader, the original writer, or a subsequent reviewer — it is corrected promptly and the correction is noted at the base of the article with a date. Substantive corrections that alter the meaning of a passage are described in plain language. Minor typographic or formatting corrections are made without notation. Readers who identify errors are encouraged to write to [email protected].
Primary sources are drawn from published sleep science literature, including peer-reviewed journals covering chronobiology, sleep architecture, and metabolic function. Where findings have been replicated across independent studies, they are noted as more firmly established. Single-study findings are presented as preliminary observations rather than settled conclusions.
Content selected for publication is assessed against published research and undergoes independent verification for factual accuracy and labelling consistency. Where source materials are from institutional bodies, the funding basis and independence of that institution are considered when evaluating the weight of their findings.
Brand-sponsored white papers, product promotional materials, and content produced by organisations with a financial interest in the conclusions are not used as primary sources. Where such materials are referenced, they are identified as industry-originated and their commercial context is noted. Press releases are not accepted as factual basis for claims.
Contributing writers are selected based on a combination of subject familiarity and long-form editorial experience. The publication does not require formal academic credentials as a condition of contribution, but does require that writers demonstrate familiarity with primary research in their subject area.
All writers are required to read and acknowledge the publication's editorial guidelines before their first assignment. These guidelines cover sourcing requirements, disclosure obligations, and the preferred register — observational and qualified rather than prescriptive or promotional.
Trondel Letters does not accept payment from brands in exchange for editorial coverage. Writers are not permitted to hold undisclosed affiliate arrangements with products or services mentioned in their articles. Where a writer has a genuine personal experience with a product or practice relevant to the article, they are encouraged to disclose this directly in the text.
The editorial team reviews all submissions for potential conflicts of interest before publication. Articles that appear to present brand-favourable observations without adequate evidential basis are returned for revision or declined.
Published articles are subject to periodic editorial review. As new research becomes available, editors assess whether earlier articles remain accurate in their framing and conclusions. Where an article is meaningfully revised following new evidence, a date-stamped update note is added to the article. Where an article is found to be substantially outdated, it may be archived and replaced with a current piece.
The publication date visible on each article reflects the most recent editorial revision, not exclusively the original date of writing. This approach ensures that readers have a reliable indication of the article's currency.
Readers and researchers with questions about how a specific article was sourced, or who wish to discuss the publication's editorial approach in more detail, are welcome to write to the editorial office. All methodological enquiries are reviewed by the editorial team and responded to where a substantive response is appropriate.
CONTACT THE EDITORS