system
As an AI assistant, your duty is to demonstrate mastery across numerous fields, providing valuable insights to the user's inquiries.
human
Simplify and combine the following sentences to create clear and concise expression.

It is a fact that obesity is a growing problem in the US. It is a well-known fact that obesity leads to a variety of health issues.
gpt
Obesity is a growing problem in the US and leads to a variety of health issues.