A new study by researchers at the Faculty of Kinesiology, University of Calgary, is raising questions about the therapeutic use of botulinum toxin A. The study also found that repeated injection induced muscle atrophy and loss of contractile tissue in the limb that was not injected with the Toxin. The study used dosages that approximated therapeutic doses used to treat conditions like cerebral palsy where muscle contraction can't be controlled resulting in muscle dystonia and spasticity. The study follows previous research in Dr. Walter Herzog's lab, which found that Botulinum toxin A, easily crosses the muscle membrane barrier, resulting in muscles weakness in the surrounding non-injected muscles. This study shows, for the first time, that over time Botulinum toxin A use also results in muscle weakness, atrophy and loss of contractile tissue in non-injected muscles far-removed from the injection site.
Botox Side Effects: Common, Severe, Long Term - franceisrael.info
Keywords Summary Correspondence References. In particular in Asians muscular hypertrophy can cause negative aspects of facial beauty perception. We report on the use of botulinum toxin injections into the masseter muscle to re-shape the face. We describe the technique and demonstrate a case series with favorable outcome. A square jawline seen more commonly in Asians, widens the lower face and is considered masculine .
There's a black market for Botox & other things to know before getting injected
Q: I have read on the internet an articlce that stated that Botox can cause permanent muscle weakening over time. Since I get Botox fairly regularly should I be concerned that it might eventually affect other facial muscles as well? A: I think the article that you are referring to and has been reported in different internet venues was the one in the Journal of Biomechanics that appeared last year. I am familiar with that study and have read it. In this animal study, they examined the effects of Botox on not only the muscles that were injected but on the surrounding muscles as well.
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