Holism means looking at things as a whole instead of just looking at the separate parts. Imagine you have a puzzle with many pieces. If you only look at one piece, you might not understand what the puzzle shows. But if you look at all the pieces together, you can see the complete picture. This is what holism means - looking at everything together to understand it better. It's like seeing the forest instead of just one tree. In medicine, it means treating the whole person, not just one part of their body. Holism helps us understand that everything in the world is connected and that we need to consider all the parts together to understand how things work.