One must be rigid when deciding what is true, otherwise the mind becomes so gullible that it becomes entirely unreliable. Currently, all we have is New Age nonsense and no good evidence.
A couple things here. First, one needs to be extremely careful about being to rigid in our thinking in deciding what is true or not. Good science is never done like this. That's religious thinking you're describing there. Having a good system of checks and balances, is not the same thing as being rigid. Rigidity is the hallmark quality of black and white fundamentalism.
Secondly, what are you calling New Age? That's a term thrown around by religious fundamentalists who call anything they don't understand by a dirty word. What the OP was describing, and what I am talking about is not New Age at all. Those studies that are being done are in fact following modern scientific standards of research. Furthermore, meditation practices and mystical experiences have been around in human cultures from the dawn of mankind.
New Age is a recent California blending of Eastern thought with Western religious beliefs in the last half century, into some form of progressive experimental form of Christianity. Nothing that is being put forward in this discussion is "New Age". We're not talking about crystals and pyramid power!
To just try to lump what you don't understand into that bucket is hardly what any serious mind would consider valid.
Because there's no evidence for such things, however there is evidence that spirituality in general has a positive effect on the psyche.
You don't believe the body has innate qualities to heal itself? I don't really even need to provide evidence for that. Cut your finger, and in a few days it heals itself, doesn't it? How then is that not part of the universe?
And yes, spirituality does in fact have a positive effect on the psyche. And a positive effect on the psyche, does in fact have a positive effect on the body. Do you dispute that? It can easily be shown how the psyche can effect the body.
Surely you've heard of the Cognitive Behavioral sciences, yes? Think of some frightening thing with your mind, then quick do a scan of your body and see where you are holding tension. The mind directly affected the body, didn't it?
The facts are what you can demonstrate, and these claims have not been adequately demonstrated. So they aren't "facts." They're assertions made in arrogance.
Arrogance? Do you not believe that if someone feels more healthy and vital, more energetic and positive, becomes more socially engaged and reports overall better mental, emotional, and physical wellbeing, that those are "assertions made in arrogance"? Isn't a changed life "adequately demonstrated" enough for you to conclude with the rational mind that these are not just empty claims? The proof is in the pudding, as they rightly say.
Not at all. I acknowledge that spirituality can benefit one's psychological health. If you practice meditation but you don't put it in a spiritual context, it doesn't seem like it's going to do very much for you. It might, but we don't have the evidence to form that conclusion yet.
What do you mean by a "spiritual context". Do you mean by spiritual, things associated with mythic religious symbolism? Do you believe that Theravada Buddhists believe in the supernatural?
There are secular humanists who practice meditation and report great benefit to it for themselves. You've heard of the famous neo atheist Sam Harris, haven't you?
And we do have the evidence. The OP is pointing you to that in the research that is being done. And it's not research coming out of the "New Age Research Institute"
When you form conclusions regardless of the evidence, your conclusion is highly likely to be false because it's no better than a random guess.
Experience is evidence. Speaking for myself, all I need to do is look at my own life from where I was to where I am now. That is hardly a random guess. It's hard data. Hell, I even had a friend I hadn't seen in the past year see me recently, and he said "My god, you look 30 years younger". And that corresponds to how I feel.
Now, that is not only subjective evidence, it's also objective evidence. Others can see it, measure its effects, and so forth. The mind/body connection is in fact very real, and easy to show evidence of. I'm certainly convinced of it though direct firsthand personal experience. And that is a conclusion based on solid hard evidence.
ETA: And the OP is the one who associated the supposed success of meditation with supernatural claims, not me.
I didn't see any supernaturalism in it. Can you point me to what your read that makes you think that?