M-F Neurons

I thought I heard somewhere that men have more neurons in their brain than females. Is that true?

The average male may have more neurons in the brain because the average male brain is larger than the average female brain. You may have heard a news item stemming from work by Gabrielle de Courten-Myers, MD, at the University of Cincinnati:   Men’s and women’s brains are distinctly different. While men have more neurons in the cerebral cortex (the brain’s outer layer), women have more neuropil (or neuropile), which contains the processes allowing cell communication. Neuropil is the stuff between axons, and it is fair to say that, traditionally, it has been largely ignored. Most synaptic activity in the brain occurs in neuropil.