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You might start a task but then drift off or daydream

San Francisco Bay Area Planning and Urban Research Association

But because e-cigs are largely unregulated, its impossible to know what chemicals they contain

Smoking Adderall can cause lung damage, addiction, and other health problems

According to the Journal of Pharmacopuncture, when nicotine hits, it binds to specific receptors in your brain and triggers the release of neurotransmitters like dopamine

However, people using these products should be aware that 'tobacco-free' does not mean 'risk-free,' said Alexandra Howell, DMD, oral medicine specialist and assistant professor in the Department of Oral Diagnostic Sciences at Virginia Commonwealth University's School of Dentistry