Skip to content
Back to outputs

The effects of caffeine on olfactory function and mood: an exploratory study

Research output: Contribution to journalArticlepeer-review

Standard

The effects of caffeine on olfactory function and mood: an exploratory study. / Stafford, Lorenzo; Orgill, Kaylee .

In: Psychopharmacology, 29.10.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

Bibtex

@article{4d7342b3c85d49d89d5e99f4afbccb75,
title = "The effects of caffeine on olfactory function and mood: an exploratory study",
abstract = "Caffeine has been demonstrated to enhance olfactory function in rodents, but to date, the sparse research in humans has not shown any equivalent effects. However, due to the methodological nature of those human studies, a number of questions remain unanswered, which the present study aimed to investigate. Using a double-blind experimental design, participants (n = 40) completed baseline mood measures, standardised threshold and identification tests and were then randomly allocated to receive a capsule containing either 100 mg of caffeine or placebo, followed by the same olfactory tests and mood measures. Results revealed that despite a trend toward elevated arousal following caffeine for habitual caffeine consumers, there were no changes in odour function. In contrast, for non-caffeine consumers, caffeine acted to enhance odour (threshold) sensitivity but reduce odour identification. Overall, these findings demonstrate a complex profile of effects of caffeine on odour function and, given the evidence from the wider caffeine literature, it is proposed that the effects of caffeine might be limited to older populations.",
keywords = "smell, adenosine, coffee, tea, odour threshold, odour idenitification",
author = "Lorenzo Stafford and Kaylee Orgill",
year = "2020",
month = oct,
day = "29",
doi = "10.1007/s00213-020-05695-6",
language = "English",
journal = "Psychopharmacology",
issn = "0033-3158",
publisher = "Springer Verlag",

}

RIS

TY - JOUR

T1 - The effects of caffeine on olfactory function and mood: an exploratory study

AU - Stafford, Lorenzo

AU - Orgill, Kaylee

PY - 2020/10/29

Y1 - 2020/10/29

N2 - Caffeine has been demonstrated to enhance olfactory function in rodents, but to date, the sparse research in humans has not shown any equivalent effects. However, due to the methodological nature of those human studies, a number of questions remain unanswered, which the present study aimed to investigate. Using a double-blind experimental design, participants (n = 40) completed baseline mood measures, standardised threshold and identification tests and were then randomly allocated to receive a capsule containing either 100 mg of caffeine or placebo, followed by the same olfactory tests and mood measures. Results revealed that despite a trend toward elevated arousal following caffeine for habitual caffeine consumers, there were no changes in odour function. In contrast, for non-caffeine consumers, caffeine acted to enhance odour (threshold) sensitivity but reduce odour identification. Overall, these findings demonstrate a complex profile of effects of caffeine on odour function and, given the evidence from the wider caffeine literature, it is proposed that the effects of caffeine might be limited to older populations.

AB - Caffeine has been demonstrated to enhance olfactory function in rodents, but to date, the sparse research in humans has not shown any equivalent effects. However, due to the methodological nature of those human studies, a number of questions remain unanswered, which the present study aimed to investigate. Using a double-blind experimental design, participants (n = 40) completed baseline mood measures, standardised threshold and identification tests and were then randomly allocated to receive a capsule containing either 100 mg of caffeine or placebo, followed by the same olfactory tests and mood measures. Results revealed that despite a trend toward elevated arousal following caffeine for habitual caffeine consumers, there were no changes in odour function. In contrast, for non-caffeine consumers, caffeine acted to enhance odour (threshold) sensitivity but reduce odour identification. Overall, these findings demonstrate a complex profile of effects of caffeine on odour function and, given the evidence from the wider caffeine literature, it is proposed that the effects of caffeine might be limited to older populations.

KW - smell

KW - adenosine

KW - coffee

KW - tea

KW - odour threshold

KW - odour idenitification

U2 - 10.1007/s00213-020-05695-6

DO - 10.1007/s00213-020-05695-6

M3 - Article

JO - Psychopharmacology

JF - Psychopharmacology

SN - 0033-3158

ER -

ID: 23121701