Caffeine plays both positive and negative roles in the human body. It can provide short-term mental alertness and arousal, but higher amounts may cause anxiety, hallucinations, and jitters. The effects of caffeine depend on the amount consumed, with 400 mg per day being the recommended maximum.

1. Caffeine and Performance
(Mental and Physical)
Caffeine & Activation: Effects on
Tara Kerr 210955284 kerrt@yorku.ca
Health and Behaviour The Healthy Side of
Based on the information collected and the studies Coffee
conducted caffeine plays multiple roles (positive and
negative) on the human body. The major roles that caffeine
plays on the body is a short mental alertness and arousal. As
well as the negative affects that include anxiety,
hallucinations and Jitters. The effects that caffeine causes is
usually dependant on the amount of caffeine ingested. The
recommended amount of caffeine is 400mg per day.
Book Citation: Barry Smith, U. G. (2007). Caffeine &
Activation Theory: Effects on Health And Behaviour. Boca
Raton: CRC Press . Newspaper Citation: Kaminju, V.-O. (2011, 08 17). The Healthy Side of
Medicines In My Home: Energy Drinks and the Coffee. Comtex: Relevant Reliable Real-Time:
http://global.factiva.com/ha/default.aspx (accessed on 11/10/11)
Caffeine and Your Body Neurophysiological
Impact of Caffeine Beverage Consumption
of Children and Adults
Encyclopedia Citation: Food and Drug Association . (2007). Medicine In
My Home: Caffeine and Your Body. Retrieved 11 /10/, 2011, from Website Citation: Garriguet, D. (2008, 11 19). Beverage Consumption by
www.fda.gov/downloads/drugs/resourcesforyou/consumers/buyingusing Journal Article Citation: Persad, L. (2011). Energy Drinks and the Children and Adults. Retrieved 11/ 10/ 2011, from Stats Canada:
medicinesafetly/understandingover-thecountermedicine/UCM205286.pdf Neurophysiological Impact of Caffeine. Front Neurosi, 116-121. www.statcan.gc.ca/daily-guotidien/081119/dq081119c-eng.htm