Thank you for the delicate comment.
Well, in the long run, meditation alters three structures in the brain. It reduced the size of Amygdala (partly responsible for fight or flight responses), so you become more tranquil, it increases the size of Hippocampus (responsible for memory storage and retrieval) and of course, it increases the gray matter in prefrontal cortex which is directly responsible for focus, problem-solving, etc.
The effects of the mind on the body is fascinating and quite intricate. Generally, if you are more tranquil, your body can function more optimally and the immune system works with more precision.
Thank you for the nice comment, I’m just standing on the shoulders of giants :)