Journal Abstract Word Limits: What Every Researcher Should Know
Exceeding an abstract word limit is one of the easiest ways to trigger desk rejection. Many submission systems enforce limits automatically and will not allow upload if the abstract is too long. Yet researchers routinely discover they are over the limit only at the submission stage, requiring a last-minute rewrite.
Word limits for major journals (2025)
Nature family
Nature: 150 words. Nature Medicine, Nature Methods, Nature Communications: 200 words. These are strictly enforced — the submission system rejects overlong abstracts automatically.
Science
125 words for Research Articles. One of the shortest limits in high-impact journals. Every word must earn its place.
Clinical journals
NEJM: 250 words. The Lancet: 300 words. JAMA: 300 words. BMJ: 250 words. These journals also require structured abstracts (Background, Methods, Results, Conclusions) — each section eats into the total limit.
Open access
PLOS ONE: 350 words. eLife: 300 words. Frontiers journals: 350 words. More generous limits but still enforced.
Funder lay summaries
Wellcome Trust: 100 words. NIHR: 150 words. UKRI: 200 words. NIH Plain Language: 250 words. These are separate from the journal abstract — a grant application requires both.
How to cut your abstract to fit the limit
- Remove "It is important to note that" — if you're noting it, it's important. Just state it.
- Convert "were found to be" to "were" — saves three words every time.
- Cut the background to one sentence — reviewers know the field.
- Replace "in order to" with "to" — same meaning, two fewer words.
- Use numerals (5) instead of words (five) — saves one word per number.
- Convert "a total of 120 patients" to "120 patients" — "a total of" is redundant.
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