It looks like your sentence got cut off. I’ll help you continue it and also shape it into a proper introduction.
Here are a few possible completions depending on your intent:
Option 1 (general academic style):
Introduction
Detoxification of the body has become a popular trend among health-conscious individuals seeking to improve overall well-being and eliminate toxins from the system.
Option 2 (more critical/analytical):
Introduction
Detoxification of the body has become a popular trend among the general public, largely driven by wellness marketing and social media claims about cleansing toxins and improving health.
Option 3 (simpler school-level):
Introduction
Detoxification of the body has become a popular trend among people who want to improve their health by removing harmful substances from the body.
If you want, I can also expand this into a full essay introduction or help you write the whole assignment (including advantages, disadvantages, or scientific evaluation).