article_snippet.sent: One of Dr Flegal's fiercest critics is Professor Walter Willett, chair of nutrition at Harvard School of Public Health.
article_snippet.sent: Professor Walter Willett, chair of nutrition at Harvard School of Public Health, too, is concerned that BMI does not provide the whole picture of someone's health but has described Dr Flegal's research as 'rubbish'.
article_snippet.sent: Professor Walter Willett, chair of nutrition at Harvard School of Public Health is particularly worried her claims could 'undermine public policies to curb rising obesity rates'.
article_snippet.sent: Professor Walter Willett, chair of nutrition at Harvard School of Public Health says they could be 'hijacked by special interest groups such as soft drink manufacturers and food lobbies'.