It's quite interesting - the way we have evolved as a society has completely broken the link between "us and our body". We have stopped listening to it a long time ago. If we really listened to our bodies, we wouldn't eat/drink/consume stuff we don't need, we wouldn't be overweight, and we'd rapidly be aware of any health-related imbalance which needs restoring. But no, we forget our original (and free-of-charge) way…
Hypertension presents no symptoms and left undiagnosed can lead to kidney failure. It's often referred to by doctors as 'the silent killer', and you don't need to eat like shit and be fat to have it. Going to your GP 2-3 times a year and getting your blood pressure checked (and your blood tested for the 'regular stuff') solves the problem. 'Listening to your body' pseudoscience doesn't really solve the problem.
GP is absolutely right that we're a society that has taught ourselves to tune out important signals from the body. If we can unlearn that and better attune ourselves to the relevant sensations in the body, we'd be a lot healthier.
[1] https://www.ncbi.nlm.nih.gov/pubmed/19798037
[2] https://news.harvard.edu/gazette/story/2012/11/meditations-p...