I am really curious about the origins of these "types". Who actually came up with these things? The concept of meditation has its origins in Hindu scriptures. However, now, it seems to have become a fad, with charlatans and marketers overwhelmingly using it to scam people.
I see the same with the so called "yoga".
But I have an open mind. There might be actual research that develops the concept of meditation. Would really love to see actual evidence. Like papers, books, etc.
That's overloading the word meditation unnecessarily. There are decidedly non-Hindu forms of meditation that people around the world practice.
One example is Christian meditation as described in the Bible, which takes an antithetic form to Hindu meditation: the goal is to "meditate" on specific doctrines or scriptures from the Bible. The idea is that there is a definite "content" upon which one meditates: the practitioner fills the mind instead of attempting to empty it or focus attention on the self. A common illustration is that of an animal chewing the cud; and (iirc) the Hebrew word for "meditate" comes from the term for cows chewing the cud.
There is lots of research on the meditation's effectiveness [0]. That research includes "47 trials in 3,515 participants suggests that mindfulness meditation programs show moderate evidence of improving anxiety and depression".
While I started meditating to reduce my anxiety (and it has), the goal of mindfulness meditation isn't reducing anxiety - it's awareness. Some people who start meditating, including myself, might start becoming more aware of their pre-existing anxiety. The good news is, once you become aware of the source of your anxiety, you can do something about it.
You’ve dismissed the parents view (and import of the linked article) as overly broad, and you have asserted the existence of an evidence base to support this.
Is there any summary of this evidence that you think is compelling?
The meta-analyses in [1] are a good starting point. Note that in particular in a clinical setting, the intervention usually comprise more than just the meditation aspects, e.g. psycho-education, a group setting, or some form of body movement.
You can find further evidence if you pick a specific intervention, e.g. Mindfulness Based Stress Reduction (MBSR) [2], which is considered the ancestor of modern mindfulness-based interventions.
However, you might find it more compelling to learn about the mechanism rather than effectiveness. In that case an interesting starting point are the studies that have been done on Buddhist monks as "extreme points" in the set of meditators, e.g. see the references in [3].
Regarding the original article, I find the title a bit clickbaity (X can worsen depression and anxiety is true for almost all X, in particular doing nothing can worsen depression and anxiety!) and it is a bit concerning to me that the author does not differentiate between mindfulness and meditation.
I couldn't find the paper from the article, my understanding is that 8 % of subjects reported adverse effects when doing a self-guided mindfulness meditation. I find 8 % quite low - 92 % did not report adverse effects?
[1] https://en.wikipedia.org/wiki/Mindfulness#Scientific_researc... [2] https://en.wikipedia.org/wiki/Mindfulness-based_stress_reduc... [3] https://en.wikipedia.org/wiki/Matthieu_Ricard
My current use is to create a quiet time for meta-cognition where I can organize my thoughts.
Some people use it to try to let go of thoughts and be mentally still, others might use it as a chance to observe and focus on their senses. There are likely thousands of uses for meditation.
That's a very broad statement given that there are many different types of meditations with different aims, religious/non-religious, with varying degrees of scientific evidence.
What I can say is, that mindfulness-based interventions, where meditation usually represents the formal "training" aspect, have a significant and growing evidence-base.
I agree there is no panacea, however in my opinion the risk/reward ratio of mindfulness meditation is astonishingly positive!