You could respond with something like this:
Hi [Classmate's Name],
I really appreciate your insights on the importance of digestion and absorption for overall health. You highlighted some critical factors, such as the role of gut microbiota and lifestyle, which are often overlooked.
I’d be interested to hear your thoughts on how specific dietary choices can influence gut health. For example, do you think that incorporating more fiber-rich foods can lead to a healthier microbiome? Also, what are some lifestyle habits you believe are most effective in supporting digestive health?
Looking forward to your thoughts!
Feel free to adjust this response to better match your style or add any specific thoughts or questions that you have!