Skip to Content Skip to Navigation  All undergraduates   young
couple sitting under tree surrounded by autumn leavesWeek one
1. Caffeine can improve memory skills and reaction times of the
actions. In addition, caffeine increases brain activity in two
locations: the memory-rich frontal lobe and the attention-
controlling anterior cingulum.  hepatitis b.jpgWhat causes
hepatitis B?   How does hepatitis B spread?  The spread of
hepatitis B occurs when blood from an infected person enters the
body of a person who is not infected. Hepatitis B is spread in
the following ways:  Sexual transmission  Sexual contact is the
most common reason for the spread of hepatitis B infection in
the United States. The spread of hepatitis B as a result of
heterosexual sex (vaginal intercourse) makes up about one-third
of new infections in adults. The risk of spreading hepatitis B
increases if either person has multiple sex partners, a history
of a sexually transmitted disease, or has sex with an HBV-
infected person. About one-qua