Diet, VegetarianHealthy Worker EffectGreat Lakes RegionFeeding BehaviorEatingFood PreferencesBulimiaMeatEnergy IntakeFood HabitsFishesDietDiet, ReducingThermogenesisGreat BritainBasal MetabolismAnimal HusbandryBody Mass IndexCalorimetry, IndirectWeight GainBody WeightProspective StudiesQuestionnairesDrosophila ProteinsPhagocytosisEnergy MetabolismLife StyleReceptors, Cell SurfaceAnalysis of VarianceCohort StudiesNeoplasmsRisk Factors