Patanjali really did have most (if not all) things figured out. Add a little Chinese medicine to this and it makes a whole lot of sense.
What wasn't mentioned in the article below if that the vagus nerve and the parasympathetic nervous system both impact digestion in a significant way. There is a reason that our sympathetic nervous system is referred to as 'flight-fight-freeze' and our parasympathetic nervous system is referred to as 'rest & digest'!
You may be wondering how Chinese medicine plays into this... Here's how.
If you think of prana as life force, another name for that could be Qi. All Qi taken in and used in our daily lives is a combination of our breath and the food we eat.
You are the air you breath and the food you eat.
By tapping into and using yoga breathing techniques like Dirga Pranayama we can stimulate our parasympathetic nervous system, our vagus nerve (which does a ton of cool stuff for us) and our digestion which can lead to a healthier life.
Here is the article if you want take a read. I found it pretty interesting.
Love, Light and Om