A prospective study of depression following combat deployment in support of the wars in Iraq and Afghanistan.

Objective: We investigated relations between deployment and new-onset depression among US service members recently deployed to the wars in Iraq and Afghanistan.

Methods: We included 40 219 Millennium Cohort Study participants who completed baseline and follow-up questionnaires and met inclusion criteria. Participants were identified with depression if they met the Primary Care Evaluation of Mental Disorders Patient Health Questionnaire criteria for depression at follow-up, but not at baseline.

Current and future cooling technologies used in preventing heat illness and improving work capacity for battlefield soldiers: review of the literature.

Objective: The goals were to review the effectiveness of current cooling technologies used on the battlefield to reduce or to prevent heat illness in soldiers and to discuss possible alternative or improved cooling methods.

Methods: A search of the literature for 1990-2007 was performed by using the Air Force Institute of Technology and Air Force Research Laboratory search engines.

Results: Several current cooling technologies are modestly effective in attenuating brain and core body temperatures, but the cooling effects are not sustained and the devices present operational problems.