Retrieved August 8, 2011
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The review, titled "Caffeine Use and Associations With Sleep in Adolescents With and Without ADHD," found that while some studies suggest caffeine can improve attention in individuals with ADHD, it can also lead to increased anxiety and sleep problems, highlighting the need for further research into its effects
[DOI] [PMC free article] [PubMed] [Google Scholar] Veldheer S, Yingst J, Zhu J, Foulds J
One possible explanation for this counterintuitive result is that, although the acute effect of high-frequency TMS is to increase excitability, the long-term effect of repeated stimulation could instead be suppressive
Regardless of the specific type: spit tobacco, snuff, chew, or pinch, this form of tobacco is as deadly as old-school cigarettes