Overview
Proponents believe that live blood analysis provides information "about the state of the immune system, possible vitamin deficiencies, amount of toxicity, pH and mineral imbalance, areas of concern and weaknesses, fungus and yeast." Some even claim it can "spot cancer and other degenerative immune system diseases up to two years before they would otherwise be detectable" or say they can diagnose "lack of oxygen in the blood, low trace minerals, lack of exercise, too much alcohol or yeast, weak kidneys, bladder or spleen." Practitioners include alternative medicine providers such as nutritionists, herbologists, naturopaths, and chiropractors.
Dark field microscopy is useful to enhance contrast in unstained samples, but live blood analysis is not proven to be useful for any of its claimed indications. Two journal articles published in the alternative medical literature found that darkfield microscopy seemed unable to detect cancer, and that live blood analysis lacked reliability, reproducibility, and sensitivity and specificity. Edzard Ernst, professor of complementary medicine at the University of Exeter and University of Plymouth, notes: "No credible scientific studies have demonstrated the reliability of LBA for detecting any of the above conditions." Ernst describes live blood analysis as a "fraudulent" means of convincing patients to buy dietary supplements.
Quackwatch has been critical of live blood analysis, noting dishonesty in the claims brought forward by its proponents. The alternative medicine popularizer Andrew Weil dismissed live blood analysis as "completely bogus", writing: "Dark-field microscopy combined with live blood analysis may sound like cutting-edge science, but it's old-fashioned hokum. Don't buy into it."
Read more about this topic: Live Blood Analysis