Reading in dim light harms a child's eyes. It might cause a headache, but it won't do any damage to your child's vision, say eye doctors. Standing will bow a baby's legs. Years ago, this belief did have some legitimate basis when children suffered from rickets, a Vitamin D deficiency that caused softening of the bones and ultimately bowing. Today, rickets has all but disappeared and there is no danger that standing will bow your baby's legs.
Cold weather causes colds.
Modern, scientific theory says that a virus causes the common cold, not exposure to cold air. However, when it's cold, kids spend more time indoors, both at home and school, and that creates a breeding ground for viruses that can cause respiratory illnesses. Children must eat their vegetables. Vitamin deficiencies are extremely rare, and it's unlikely that children will harm themselves by not eating vegetables. It is important to serve well-rounded meals, but you don't have to fight daily battles about eating all your vegetables.