Major<unk>  is often associated with increased<unk><unk> , and the two are thought to share similar physiological pathways and risk factors. Primarily seen through increased inflammation, this relationship is bidirectional with<unk>  often resulting in increased<unk>  response and illness resulting in prolonged sadness and lack of activity. This association is seen both long-term and short-term, with the presence of one often being accompanied by the other and both inflammation and<unk>  often being co-morbid with other conditions. Explanations for this relationship have come from both medical and evolutionary approaches, with disagreements stemming primarily about whether the connection is<unk> al and why<unk>  and inflammation share similar physiological pathways.
Depression and immune function
Brain and Behavior
Sleep and metabolism
Sexual motivation and hormones
Cancer immunology
Nutrition and Cancer
Nutrition and cognition
Breastfeeding and fertility