The more we learn about the microbes that inhabit the nooks and crannies of our bodies and wield profound influence on our health, the more questions arise from scientists and patients alike. Now, thanks to the microbial genomics company uBiome, we all have a chance to vote on which questions are most pressing.

The company opened a research grant competition that aims to “fast track an innovative study that has potential to affect human health and well-being.” Out of all of the submissions, uBiome’s scientists have selected six top entries and is asking the public to help pick the winner. The successful project will receive up to $100,000 worth of research assistance in the way of microbiome sampling kits and genetic analysis help.

After the voting, which you can do here, the winner will be announced in May.

Here are the six top projects:

Baby making microbes: Clinical instructor Cindy Duke at the Yale School of Medicine wants to know if there’s a link between ovulation induction procedures and the vaginal microbiome in women undergoing assisted reproduction.

The guts of an athlete: Graduate student Jarrad Hampton-Marcell at the University of Illinois at Chicago wants to know how the gut microbiome can influence athletic performance.

Married with microbes: Janice Kiecolt-Glaser, director of the Institute for Behavioral Medicine Research and professor at the Ohio State University College of Medicine, wants to study the connections between marital stress and the gut microbiome.

Looking an addict in the mouth: Postdoctoral researcher Renato Polimanti at the Yale University School of Medicine wants to study the relationship between the microbes in people’s mouths and drinking and smoking behaviors.

Microbes on drugs: Postdoctoral researcher Eon Rios at the Stanford University School of Medicine wants to study the long-term effects of oral antibiotics on the gut microbiome.

Nurturing sweet-loving microbes: Professor Mark Seielstad at University of California, San Francisco wants to study the interplay between environment, diet, the microbiome composition, and the risk of type 2 diabetes.