Latest science news about the treatment of depression in a recent study that found a link between caffeinated coffee consumption and reduction risk of depression in women. As quoted from ScienceDaily, this is good news because we are already very familiar with the coffee.
Previous studies, including one prospective study of men, have shown an association between coffee consumption and risk of depression. Caffeine is the most commonly used central nervous system stimulant in the world, and about 80 percent of consumption is in the form of coffee, according to background information in the article.
Depression is a mood disorder that a chronic and recurrent condition that affects twice as many men and women, including about one in every five U.S. women during their lives, "the identification of risk factors for depression among women and the development of new prevention strategies, therefore, public health priorities, "the authors write. They sought to examine whether, in women, consumption of caffeine or caffeinated beverages a particular risk associated with depression.
Michel Lucas, Ph.D., RD, of Harvard School of Public Health, Boston, and colleagues studied 50,739 women who participated in the study the U.S. Nurses' Health. Participants, the mean (average) age of 63, not depressed at baseline in 1996 and were prospectively followed with up to June 2006. Researchers measured the consumption of caffeine through questionnaires completed from May 1980 until April 2004, including the frequency that caffeinated coffee and noncaffeinated, nonherbal tea, caffeinated soft drinks (sweetened or low-calorie cola), caffeine-free soft drinks (sugared or low-calorie caffeine-free cola or drink Other drinks) and chocolate are usually consumed in the previous 12 months. The authors define depression as a newly reported diagnosis of clinical depression and start the routine use of antidepressants in the previous two years.
Consumption of caffeine with the appropriate dose may be the choice treatment of depression. Analysis of the average cumulative consumption including latent period of two years, for example, data on caffeine consumption from 1980 to 1994 is used to predict episodes of clinical depression from 1996 to 1998, consumption from 1980 to 1998 used for 1998 and 2000 follow-up period, and so on . During the follow-up period of 10 years from 1996 to 2006, researchers identified 2607 incident (new onset) cases of depression. When compared with women who consumed one cup of caffeinated coffee or less per week, those who consumed 2-3 cups per day had a 15 percent reduction in relative risk for depression, and those consuming four cups or more per day had a 20 percent reduction in relative risk. Compared with women in the lowest (less than 100 milligrams [mg] per day) category of caffeine consumption, those in the highest category (550 mg per day or more) experienced a 20 percent reduction in relative risk of depression. No association was found between decaffeinated coffee intake and risk of depression.
"In this large prospective cohort of older women free of clinical depression or severe depressive symptoms at baseline, the risk of depression decreased in a dose-dependent with increased consumption of caffeinated coffee," the authors write. They note that observational studies "can not prove that caffeine or caffeinated coffee reduced the risk of depression but only shows the possibility of such a protective effect." The authors call for further investigations to confirm their results and to determine whether regular consumption of caffeinated coffee may contribute to the prevention or treatment of depression.
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