When Jane Watiri was born, she had a fracture on her right leg and the doctor immediately put a cast on it when she was barely a day old. Upon further tests, she was diagnosed with a hereditary genetic condition known as Osteogenesis imperfecta (OI). This is a condition caused by defective genes which affect how the body makes collagen, a protein that helps strengthen bones.
People with OI might have bones that break easily, which is why the condition is commonly known as the brittle bone disease. This is how young Jane was introduced into a world of having to depend on calcium supplements to help her bones get stronger.