Cod liver oil once cured a bone-weakening disease

Cod liver oil, rich in vitamin D, historically prevented rickets, a childhood disease causing soft, weak bones and deformities like bowed legs. Vitamin D is crucial for absorbing calcium, essential for healthy bone development. In the 1920s, scientists confirmed cod liver oil's power against rickets, a condition often worsened by limited sunlight and poor diet. This discovery dramatically reduced rickets in industrialized nations. Today, it remains a natural source of vitamin D, omega-3s, and vitamin A, also supporting immune function and eye health.