Rationale and objective: Preference for sweet taste rewards has been linked to the propensity for drug use in both animals and humans. Here, we tested the association between sweet taste liking and sensitivity to amphetamine reward in healthy adults. We hypothesized that sweet likers would report greater euphoria and stimulation following d-amphetamine (20 mg) compared to sweet dislikers. Methods: Men (n = 36) and women (n = 34) completed a sweet taste test in which they rated their liking of various concentrations of sucrose and filtered water (0.05, 0.10, 0.21, 0.42, and 0.83 M). Participants who preferred the highest concentration were classified as “sweet likers.” All others were classified as “sweet dislikers.” They then completed four sessions in which they received d-amphetamine (20 mg) and placebo in alternating order, providing self-report measures of euphoria and stimulation on the Addiction Research Center Inventory (ARCI) at regular intervals. We conducted linear mixed effects models to examine relationships between sweet liking and drug-induced euphoria and stimulation. Results: Sweet likers reported significantly greater amphetamine-induced euphoria than did sweet dislikers among women. By contrast, sweet liking was not associated with amphetamine response in men. No associations with stimulation were observed. Conclusion: The association between sweet preference and amphetamine response in women is consistent with animal studies linking sweet taste preference and drug reward and also fits with observations that individuals who use drugs show a preference for sweet tastes. Whether the sex difference is related to circulating hormones, or other variables, remains to be determined.
|Number of pages||10|
|State||Published - Nov 1 2017|
Bibliographical noteFunding Information:
Funding This research was supported by the National Institute on Drug Abuse Grants R21 DA037642 (HdW), R01 DA002812 (HdW, KLP), and National Institute on Alcohol Abuse and Alcoholism Grant K01 AA024519 (JW).
This research was supported by the National Institute on Drug Abuse Grants R21 DA037642 (HdW), R01 DA002812 (HdW, KLP), and National Institute on Alcohol Abuse and Alcoholism Grant K01 AA024519 (JW).
© 2017, Springer-Verlag GmbH Germany.
- Drug reward
- Sex differences
- Subjective response
- Sweet taste
ASJC Scopus subject areas