If you break down a system into its individual parts, can you always sum the parts to get the system back? Does sugar makes us fat? If so, how? Our table sugar sucrose is composed of glucose and fructose?

During the school exams, they would tell me to take a good night sleep after revision. They said it would help me remember better. When I was worked up about something, people told me to sleep on it. They

They shape you and you shape them. The talk between your immune cells and your bacteria can decide your shape. Why do gut bacteria change? How can they make anyone fat? Adapted from Dancing mouse | CC0