§ Claim under review · Health
"A spoonful of tomato paste a day could reshape how your brain works, boosting memory and focus, a groundbreaking new study reveals... eating just 35 grams of concentrated tomato paste daily for three months can significantly alter brain network connectivity... the team used functional MRI scans to peer inside the participants' brains, discovering tangible changes in how major neural networks communicate."
Verdict
Source exists but framing is misleading
Confidence
HighSummary
The study behind this viral post is real. Researchers in Barcelona ran a randomized crossover trial in which 42 healthy adults aged 40 to 55 ate about 35 grams of concentrated tomato paste daily for three months, and they reported small improvements on attention and face-name memory tests. However, the brain scan part of the study, which is what makes the headline exciting, involved only 14 people and used a statistical threshold that was not corrected for multiple comparisons, meaning those results are exploratory and could be chance. The post also leaves out that connectivity also dropped in a different brain network during the tomato-free control period, that participants knew which diet they were on, and that the memory gain was 0.8 points. The claim that lycopene reduces neuroinflammation in the brain comes from animal and cell research, not from this human trial. The study authors themselves describe the findings as preliminary and call for larger, longer studies. Eating tomatoes is fine and likely healthy, but this trial does not show that a spoonful of tomato paste reshapes how your brain works.
The readings
key figures from the evidencesubgroup size for fMRI brain scan analysis
associative memory improvement, Face-Name Exam
Why this verdict
Evidence
The cited study is real and the citation is essentially correct. It is a randomized, two-period crossover trial conducted by researchers at the University of Barcelona and IDIBAPS. Forty-seven healthy adults aged 40 to 55 were randomized to two three-month interventions separated by a one-month washout: daily concentrated tomato paste at 0.5 g per kg of body weight (about 35 g, roughly 38 mg lycopene) versus a lycopene-restricted control diet. Forty-two participants completed the trial.
Reported outcomes: selective attention improved on the d2-R test (concentration performance +7.2 points; processing speed +8.3 points) and associative memory improved on the Face-Name Associative Memory Exam (+0.8 points). Plasma lycopene rose markedly. Plasma BDNF showed what the authors describe as a "borderline" increase (mean difference 15.2 ng/mL), and the authors note a carry-over effect for BDNF across periods. Resting-state fMRI showed reduced connectivity in the right frontoparietal and auditory networks after the tomato period, and reduced connectivity in the dorsal attention network during the control period.
The authors' own conclusion is hedged: tomato consumption "may support cognitive function and modulate brain connectivity." They explicitly call for replication in larger and longer studies before broader generalization and before concluding that effects translate into clinically meaningful protection against cognitive aging.
Findings
✓ What's accurate 8
- The study exists, the citation is accurate, and it is published in Antioxidants (2026;15(5):644).
- It was a randomized crossover clinical trial with 42 completers, healthy middle-aged adults, three months per intervention.
- The dose was concentrated tomato paste at roughly 35 g per day.
- Improvements were reported in selective attention (including a processing speed subscore) and associative memory.
- Resting-state fMRI showed reduced connectivity in frontoparietal and auditory networks after the tomato period.
- BDNF showed an upward but borderline result. The viral text's phrase "upward trend" is a fair description.
- Lycopene does cross the blood-brain barrier, as the authors state.
- The viral text does acknowledge that larger research is needed.
≈ What's misleading 10
- Exaggeration: "significantly alter brain network connectivity" and "tangible changes." The imaging results were reported at an uncorrected statistical threshold (p < 0.005, no multiple-comparison correction), which is exploratory rather than confirmatory. "Significantly" implies a level of statistical rigor the imaging analysis did not meet.
- Omitted qualifier, most important one: the fMRI sub-analysis involved only 14 people, not the 42 in the trial. The viral text says "the team used functional MRI scans to peer inside the participants' brains," which reads as though all 42 were scanned.
- Omitted qualifier: the control period also produced reduced connectivity, in the dorsal attention network. Presenting only the tomato-period reductions as evidence of a "streamlined brain" removes a finding that complicates the interpretation.
- Exaggeration: "could reshape how your brain works." The authors describe possible "functional brain reorganization" as an interpretation of preliminary signals, not a demonstrated reshaping of brain function.
- Unsupported causal attribution to a single compound: "Researchers attribute these cognitive boosts to lycopene." The intervention was whole tomato paste, which contains fiber, polyphenols, vitamins and other carotenoids. Lycopene is the hypothesized mediator, not an isolated and demonstrated cause.
- Species extrapolation: the neuroinflammation mechanism described is drawn from preclinical animal and cell research cited in the discussion. This trial measured no neuroinflammation marker in humans.
- Overstated distinctiveness: lycopene's "unique ability to cross the blood-brain barrier" is wrong. Crossing the blood-brain barrier is not unique to lycopene.
- Hype framing: "groundbreaking" and "a spoonful a day could reshape how your brain works." The authors claim a first (first trial linking lycopene changes to functional connectivity), which is a novelty claim, not an indication of established importance.
- Omitted qualifier: the effect sizes are small. Associative memory improved by 0.8 points. The viral text calls these "significant improvements" and "measurable improvements" without conveying magnitude.
- Omitted qualifier: participants were not blinded, and the comparator was a restricted diet rather than a placebo.
? What's uncertain 5
- Exact p-values and confidence intervals for the individual cognitive outcomes were not retrieved in this investigation, so I cannot state precisely which cognitive results were nominally significant and whether they survived adjustment for multiple outcomes.
- Whether the Modified Wisconsin Card Sorting Test (executive function) showed any change was not confirmed. Its absence from the abstract's results sentence suggests no notable effect, but this is an inference, not a verified finding.
- Funding sources and declared conflicts of interest for the paper were not retrieved. The trial is linked to a project known as MITOS run by the authors' Polyphenol Research Group. Whether any tomato industry funding or product donation was involved could not be verified in this investigation.
- Whether any effects persist beyond three months is untested. The authors say so directly.
- The extent of practice effects across repeated cognitive testing was not quantified in the material retrieved.
Sources
5 of 6 linked to recordsLópez-Solís R, Donat-Vargas C, Ramírez-Carrasco P, et al. "Tomato Intake Improves Cognitive Performance and Modulates Functional Brain Networks in Healthy Adults: A Randomized Crossover Clinical Trial." Antioxidants (Basel). 2026;15(5):644. doi:10.3390/antiox15050644
ClinicalTrials.gov registration NCT05891977, "Effect of Tomato Paste Consumption on the Microbiota-gut-brain Axis in Healthy Adults"
PubMed record 42193265 (abstract and figure legends)
ScienceAlert, "Scientists Had People Eat Tomato Paste For 3 Months. Their Brain Scans Looked Different."
Vice, "Eating This Common Food Every Day Could Change Your Brain, Study Finds"
Polyphenol Research Group (University of Barcelona), MITOS project announcement