David Olson has known for some time of the dangers posed by excessive stress.

In fact, if women are exposed to two or more adverse childhood experiences while growing up, their threat of preterm birth doubles. Olson, along with Kathleen Hegadoren, a professor in the U of A's Faculty of Nursing, and graduate pupil Inge Christiaens, are the authors of a new research in the journal BMC Medicine linking chronic tension with preterm birth. The global world Health Organization estimates 15 million babies are born preterm every year. It is the leading cause of death for children under the age of five, and babies who survive are at much higher risk of developing a number of health issues including chronic lung disease, cardiovascular disease and metabolic diseases such as for example Type 2 diabetes.Strategies Study Population From July 2008 through March 2009, we conducted this scholarly study at five trial sites in Lima, Peru; Baku, Azerbaijan; Cape Durban and Town, South Africa; and Mumbai, India. We enrolled consecutive adults with symptoms suggestive of pulmonary tuberculosis or multidrug-resistant tuberculosis who were able to offer three sputum samples of at least 1.5 ml. Individuals in the group at an increased risk for pulmonary tuberculosis were eligible only if that they had not received a tuberculosis medication within the past 60 days, whereas the combined group at an increased risk for multidrug-resistant disease included individuals who had undergone previous treatment, those with nonconverting pulmonary tuberculosis who were receiving therapy, and symptomatic contacts of individuals with known multidrug-resistant disease.