Choose low-toxic, low-VOC paints since they are safer to handle, easier to clean up and do not emit harmful fumes as they dry.
If your house was built before 1978, make sure you test for lead-based paint before you do any sanding or wall demolition, especially in a nursery or child's bedroom. Because their brains are still developing, children are very vulnerable to lead, a highly toxic neurotoxin.
Consider lighter-colored paints to reduce artificial lighting needs.
Select clay plaster as an alternative to paint to create a rich, natural texture. It is breathable, mold resistant, hypo-allergenic and low-toxic.