The difference between a child psychologist and a child psychiatrist is important to understand. Child psychologists are doctors trained to diagnose mental and behavioral disorders, and can provide therapy and counseling.
Not all lectins are bad, but some are (or at least, can be). A subset of lectins that can be found in large concentrations in the seeds of grasses (i.e. grains) and the legume family do have some properties that can make them very problematic for human health, namely that:
Among the most problematic lectin-containing foods are corn, corn-fed meats, casein A1 milk, peanuts, cashews and unfermented soybeans. These are best avoided altogether; High-lectin foods such as legumes and grains can be made safe to eat by proper soaking and cooking.