We have a new addi­tion to our series on the rela­tion­ship of smell per­cep­tion and obe­si­ty. In our lat­est paper Maria Poes­sel and her co-authors find that peo­ple with high­er BMI have low­er olfac­to­ry bulb vol­ume while olfac­to­ry func­tion is seem­ing­ly still nor­mal. The full sto­ry is avail­able here.