My Giyera Sa Katawan Ni Mark = There’s A War Inside Mark’s Body

May Giyera sa Katawan ni Mark by Luis P. Gatmaitan, M.D., illustrated by Ariel Santillan, and published by Hiyas Books, is an educational children’s story that explains how the body’s immune system works when fighting illness. Through Mark’s experience of getting sick, young readers learn how the body defends itself against germs and why proper nutrition, rest, hygiene, and medical care are important for staying healthy. Written in an engaging and child-friendly style, the book makes basic health and science concepts easy to understand.