Chimpanzees have been found to consume significant amounts of alcohol through fermented fruits, offering insights into how alcohol influences their behavior. As fruits like figs and star apples ripen, they produce ethanol, which chimps ingest as they eat up to 4.5 kilograms of fruit daily. Previous research hinted that chimps might consume the equivalent of over two alcoholic drinks per day, but concrete evidence was lacking until now.
Research conducted at Ngogo, a site in Uganda’s Kibale National Park, confirms alcohol presence in chimps’ urine using field tests similar to human alcohol consumption assays. Lead researcher Aleksey Maro from the University of California, Berkeley, suggests that alcohol might influence chimps’ behavior by reducing anxiety or enhancing social interactions, akin to humans enjoying a glass of wine with dinner.
While the effects of alcohol on chimps are still being explored, this study provides a new perspective on their dietary habits. Some experts, like Kevin Langergraber, remain cautious about attributing human-like motivations to chimps. Nonetheless, this research opens up questions about the evolutionary roots of alcohol consumption and its role in social bonding.