Medical practitioners have been aware of the placebo effect for decades now. Some administer it. Still some attempt to explain it as a biochemical effect. However, no one knows exactly what it is and how it comes about.
Cosmologists wrack their brains over an explanation to the horizon problem. Some come up with this explanation of [...]

There is a certain ‘Java Herbal Pill’ which claims “to help HIV/AIDS sufferers get their CD4 back to normal number through a few weeks use. This depend on the condition of their HIV/AIDS phase and if the sufferers also have had any opportunistic reactions.”
This herbal medicine comes in powder, pill, and liquid forms, and promises [...]