Polyphenols, one of the many categories of natural substances, help promote and strengthen one’s immunity. They are used to:
1. Regulate intestinal mucosal immune responses
2. Regulate allergic diseases
3. Regulate antitumor immunity
4. Induce epigenetic changes in cells
5. Packed with antioxidants
Plant-based foods are rich in polyphenols, such as vegetables and fruits.