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  1. 4 hours ago · Evidence from earlier studies suggests that Alzheimer's disease starts when the blood-brain barrier (BBB), which protects the brain, decreases. Due to this weakening, toxic substances may be able ...

  2. en.wikipedia.org › wiki › AcupunctureAcupuncture - Wikipedia

    14 hours ago · Acupuncture[b] is a form of alternative medicine [2] and a component of traditional Chinese medicine (TCM) in which thin needles are inserted into the body. [3] Acupuncture is a pseudoscience; [4][5] the theories and practices of TCM are not based on scientific knowledge, [6] and it has been characterized as quackery.

  3. 14 hours ago · Methamphetamine (METH) is a potent amphetamine-type stimulant that has high abuse potential and can be smoked, snorted, injected, or taken orally. The drug is high in lipid solubility and can cross the blood-brain barrier more readily than amphetamine due to the addition of an extra methyl group.