{
  "id": 19868317,
  "title": "Can a scent really sharpen your memory? It's complicated",
  "url": "https://urgent.news/2026/11/13/can-a-scent-really-sharpen-your-memory-its-complicated",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-13T21:40:06.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-11-scent-sharpen-memory-complicated.html"
  },
  "original_language": "en",
  "account": "The relationship between smell and memory is complex and still being understood by scientists. While past experiences can quickly bring vivid memories to mind, the exact mechanisms linking scent to memory remain unclear. A recent study from UCLA adds to this complexity, showing that the impact of scent on memory performance can vary based on factors like age, timing, and novelty.\n\nThe research involved young and older adults who completed memory tasks in rooms either scented or unscented with lavender essential oil. Contrary to claims that aromatherapy could enhance memory, the study found no significant difference in performance between the two groups. However, older adults who encountered the scent during the first learning phase outperformed those exposed in the second phase, suggesting that novelty may play a role in scent-memory associations.\n\nThis finding, published in Frontiers in Aging Neuroscience, contributes to the growing body of evidence linking olfactory dysfunction to Alzheimer's disease. Scientists are exploring whether changes in the sense of smell could serve as an early detection tool for the condition. The study, conducted by UCLA neuroscientist Stephanie Leal and colleagues from Rice University, aimed to investigate how olfactory cues could modify memory in individuals with olfactory dysfunction.\n\nThe study used a standard olfaction test to establish baseline olfactory functioning in healthy participants with no signs of Alzheimer's. Volunteers then viewed images of everyday household objects in a computer screen, with the order of exposure to scented and unscented conditions varying. After a delay, participants were shown images of the objects, some identical, others slightly changed, and others entirely different. The task required participants to recall both general knowledge about the objects (such as whether they had seen them before) and specific details (like color).\n\nOlder adults showed worse detail memory compared to younger adults, as expected. However, the presence or absence of the lavender scent did not significantly affect memory performance for either age group. Surprisingly, the timing of scent exposure proved crucial. Older adults who smelled the lavender during the first learning phase recalled the objects more accurately than those exposed during the second phase. Additionally, those who found the scent pleasant and those with less pre-existing olfactory dysfunction performed better on detail memory tests.\n\nThe study suggests that the strategic use of scent, considering the context and timing of exposure, may be more effective in supporting memory in older adults rather than simply assuming it as a general memory enhancer. It also highlights the potential importance of novel sensory experiences in promoting memory as people age. The findings emphasize that the effectiveness of scent in memory tasks is not universal but can depend on various factors, including the individual's age, olfactory function, and the novelty of the sensory experience.",
  "summary": "The sense of smell shares an intimate but mysterious connection with memory. We know that past experiences can flash vividly to mind if we smell a scent that accompanied them. This has led to claims that aromatherapy can enhance memory or even diminish cognitive decline. But the mechanisms by which the brain associates experience with scent are still being unraveled, and there is mixed scientific…",
  "key_points": [
    "Smell and memory relationship is complex and unclear to scientists",
    "UCLA study finds scent impact on memory varies by age, timing, and novelty",
    "Older adults exposed to lavender scent during first learning phase recalled better"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}