In June of 1964, the World Medical Association developed the ‘Declaration of Helsinki’(available at www.wma.net) as a statement of ethical principles to provide guidance to investigators and physicians involved in human research. Over 40 years later the declaration remains ‘. . .a respected institution and one of the most influential documents in clinical research’ [1]. Though it is not binding...

Now is the time for the science of nutrition, with its application in food and nutrition policy, to be given a broader definition, additional dimensions and relevant principles, to meet the challenges and opportunities faced by humankind in the twenty-first century. As originally conceived and as now usually studied and practised, nutrition is principally a biological science. This classic biol...

Editor—Thank you for giving us the opportunity to respond to the letter from Dr Ward—we thank him for his comments. While we applaud the messages in the most recent Davies report to which Dr Ward refers, his reference to Sheryl Sandberg’s new book, Lean in: Women, work and the will to lead deserves further discussion. In our editorial, we referred to Sheryl Sandberg’s TED Talk from 2010 where s...