system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: if they all come from milk, why do cheese, butter, cream and yoghurt all have different nutritional benefits/impacts?

For instance, a bowl of yoghurt is good for me but a bowl of cream isn't? Please explain!
gpt
Besides the fact that different parts of the milk - which have different ratios of fat to protein to water - are used for different products, many dairy products rely on bacterial or fungal action. These microbes digest some parts of the milk into new compounds, and change the overall nutritional profile.