Here is a great summary by a local lactation consultant group: http://www.ailc.ca/levels-of-lactation-support.html Another (US-based) summary: https://uslca.org/wp-content/uploads/2015/05/Whos-Who-Short1.pdf A very detailed description of all lactation support credentials: http://uslca.org/wp-content/uploads/2017/07/2-page-Whos-Who-updated-July-2017-Watermark.pdf ...

Factors that increase complexity: Newborn period, difficult birth, medical conditions that can affect supply (postpartum hemorrhage, PCOS, diabetes, retained placenta, etc), limited effectiveness on breast, poor establishment of breastfeeding, nipple damage, breast infections, breast-pump-feed cycle and transitioning to exclusive breastfeeding/chestfeeding, infant medical conditions Medium complexity concerns: Weaning off...

"Chestfeeding is a term used by many transmasculine and non-binary parents to describe how they feed and nurture their children from their bodies. Some prefer the term nursing instead, while others prefer breastfeeding...