Optimally

As a teenager, I grew avocado plants in pots, so that I could make bonsai out of them, but I later learned that optimally, bonsai should have small leaves; avocado plants had big leaves.

University of Rochester neonatologist Sanjiv Amin explains that late in pregnancy, a process known as myelination occurs in the brain and nervous system. It's how the brain creates its wiring. Iron is important for myelination, and without it being provided during that period, then myelination may not occur adequately or optimally.