If your child often has a hoarse voice, it might indicate poor growth and development of the laryngeal cartilage and a calcium deficiency. Treatment with calcium supplements is recommended. Make sure to expose your child to plenty of sunlight and consistently take one fish oil capsule per day. Continue the calcium supplementation for two weeks, and also ensure a diverse range of complementary foods.

My baby is ten days short of four months old. When laughing, there is no sound and no tears, but the health check shows normal laryngeal cartilage development. How can I guide language communication?