Fish, fish oils, and n-3 fatty acids are often in the health news. Here are seven recent papers illustrating the breadth of fish oil relevance. The papers look at treatment of rheumatoid arthritis, the potential of flax as a dietary source of n-3 fatty acids, effects on indicators of cardiovascular disease, potential protection against dementia, reduction in mortality, and importance in pregnancy. The papers also illustrate the patchwork, three steps forward/one step back, meandering, spreading, accretion of scientific knowledge. As the proverb goes "One swallow doesn't make a summer". Similarly, a single research study is usually simply one brick in the gradual building of our knowledge. For more on fish and n-3 fatty acids, see other relevant blog posts I've written, articles in the linked Connotea database, and some recommended websites.