Since you actually seem to be a reasonable person, I'll take some time to respond to this.
Atheism is not "a lack of belief in anything." It is the lack of belief in the existence of God. The foundation of this belief is that there is, in fact, NO signficant evidence to the contrary. Atheists do not consider the bible, Quaran, Talmud, etc as "evidence". They do not consider questions like, "Well then who created time then, hmmm?" as evidence either
No. I am suggesting that when people selling a product make claims about its benefits, they should actually have something beyond anecdotes to back them up. They should be able to demonstrate the effects. Repeatedly.
Anecdotes only are the hallmark of the huckster.
What evidence? The fact that it makes sense to you is not evidence. And what "work"? Do you realize the the people selling these things don't even tell you how they work. They just talk about the "healing benefits". What benefits? What do they do?
Of course "things outside the body can have an influence on things inside the body". But these "things" are based upon demonstrated scientific principles. The effects can be repeated over and over.
Doctors who use ultrasound or some other technique to break up your kidney stones don't need to rely upon your testimonial. They can show people the before and after X-Rays or MRIs. They can point to countless clinical studies done for years before such instruments as were used on you were ever even approved.
And why did they have to get them approved? Why didn't they just put their machines out on the market and start selling them? Well for starters, for all the theory they had, nobody knew for sure what effect they would have on the human body. It's possible to HURT the body with ultrasound. Perhaps that might have been the result. So they test.
So even if you actually assume these silly necklaces are somehow affecting your body, how do you know they aren't harmful? Again, the answer is that you test them. Scientifically. But of course, none of these companies would ever actually do that. They'll sell them until the fad is over and move on to the next one. And people will keep buying them because "it sounds reasonable".
That's what hucksters count on.