Diet can affect your smell quite a bit, most of the time it just makes you smell worse. But there’s certain things (that we even have in our daily diet) than can help with that.
In an article Diet quality and the attractiveness of male body odor put out by Evolution & Human Behaviour researchers looked into the health side effects of having a diet rich in fruit and vegetables.
To figure out if this sort of diet would affect smell the researchers gathered axillary sweat samples and dietary information. From there they got women to sniff it and give their good solid opinion on it. Not a pleasant task.
What they found was that greater fruit and vegetable intake was indeed significantly associated with more pleasant smelling sweat independent of the sweat intensity. The smells had more floral, fruity, sweet and medicinal qualities.
The report also noted that “Self-report dietary data revealed that fat, meat, egg and tofu intake was associated with more pleasant smelling sweat, and greater carbohydrate intake with stronger smelling less pleasant sweat.”
What they found was that greater fruit and vegetable intake was indeed significantly associated with more pleasant smelling sweat independent of the sweat intensity.
While there isn’t consensus on whether humans emit pheromones the same way animals do, humans do consider smell a contributing factor toward attractiveness. Women more so than guys (so if you smell, don’t worry, guys don’t seem to mind), and their preferences vary depending on where they are in their menstrual cycles. When women are in their most fertile stage they prefer the smell of guys with higher testosterone levels initial data has shown.
However with that said more research in this area would need to be done. “This is a controversial research area. Studies are highly inconsistent,” psychologist Wendy Wood of the University of Southern California, who was not involved in the study, told LiveScience. “Only a few studies have shown that women’s menstrual cycles influence their mate preferences — many more find no effects of menstrual cycles on preferences”.