Use humor when it is appropriate. Use case histories and anecdotes. In his book, The Hostage Brain , Bruce McEwen, Ph.D., of Rockefeller University writes of mysterious interactions between stress hormones and the immune system. Years later, she showed up in the United States, completely cured. Use quotes and even snippets of conversations.
Dialogue can also work well to keep readers interested.
Well, it's usually made out of rubber. Explain how your information can help the reader personally. Use metaphors, concrete images, and comparisons to give the reader perspective. But if you do need to give a measurement and you are writing for an American readership, stick to inches and feet rather than metric units. When giving statistics, such as the success rate of a new medical procedure, compare it to other similar procedures to help the reader put it into perspective.