Some like it hot: testosterone predicts laboratory eating behavior of spicy food in: Physiology & Behavior, december 2015

abstract article
In the present study, we analyzed the relationship between eating behavior of spicy food and endogenous testos-terone. Participants included 114 males between the ages of 18 and 44 recruited from the community. They were asked to indicate their preferences regarding spicy food and were then asked to season a sample of mashed potatoes with pepper sauce and salt (control substance) prior to evaluating the spiciness of the meal. A positive correlation was observed between endogenous salivary testosterone and the quantity of hot sauce individuals voluntarily and spontaneously consumed with a meal served as part of a laboratory task. In contrast, significant correlations were not observed between testosterone and behavioral preference for salty foods. This study suggests that behavioral preference for spicy food among men is related to endogenous testosterone levels.
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From the Conclusion: (...) it may be the case that consuming spicy foods produces elevated levels of testosterone. (...)

As a recent study showed, individuals who chosered in a lab-based experimentasa symbol color to representthemselveshad higher testosterone levels and rated their color as having higherlevels of certain characteristics, such as dominance and aggression,than did those participants who chose blue. (Farrelly, 2013)