Traditionally, some textbooks from the United States used a system of six kingdoms (Animalia, Plantae, Fungi, Protista, Archaea/Archaeabacteria, and Bacteria/Eubacteria) while textbooks in Great Britain, India, Australia, Latin America and other countries used five kingdoms (Animalia, Plantae, Fungi, Protista and Monera).
For other uses, see Placebo (disambiguation) and Placebo effect (disambiguation). The placebo effect can be produced by inert tablets, by sham surgery, and by false information, such as when electrical stimulation is turned off in those with Parkinson's disease implanted brain electrodes.
Other Causes. Other conditions like low blood pressure, diabetes, and intake of various medications can cause the feeling of being off balance. Low blood pressure can often occur with common symptoms such as light-headedness and unsteadiness. A decrease in blood pressure may result in lack of blood flow to the brain.