"Apparently there's a nocebo effect as well. People who have been wrongly diagnosed with a condition have ended up developing that condition, far too often for chance. Kind of makes a mockery of objective testing when belief can overrule biology. More evidence that the universe is created by consciousness rather than the other way round."
Nope, not bullshit at all, and very easily demonstrated.
We observe the universe through our five senses and only though them are we able to assign any traits to our surroundings. If there were no consciousness in the universe then it wouldn't look, sound, feel, taste or smell like anything. Now think about what the universe without those would be, nothing. You may fall into the trap of thinking something along the lines of 'the sun would still shine'. Nope. The sun wouldn't shine. 'The Earth would still spin.' How? In what possible sense could an unobserved Earth do anything?
What we think of as the universe is merely our own personal model created from our own perception of it. Without that subjective perception the model ceases to exist. Think about that, the only possible way of defining the universe ceases to exist. Now it can only be thought of as mathematical relationships and nothing more. But these relationships are no more significant than mathematical relationships that describe something that doesn't exist at the moment. There's plenty of maths that doesn't describe any real physics and that's all that would be left without consciousness.
Try to imagine a universe that doesn't in any way impact our senses. How would we know it exists? We couldn't because it would have no measurable effect. How do we define 'real'? Something that has a measurable effect. The tree falling in the forest is just the beginning. No it really can't possibly make a sound without someone there to here it. The universe can't possibly exist in any real sense without being perceived.
If you still think the universe can exist without consciousness then please explain your definition of an existence that has no measurable effect on anything. This idea has a name but I can't remember it. It's interesting to think about but not really useful scientifically because it doesn't change anything but I think it's very important to realise that the consciousness is primary and the material world is secondary. Most people think of it backwards with the universe as the cause and consciousness as the effect.
I don't think I'm explaining it very well, I've done it better before but hopefully I've explained it well enough.