Today our fatigue feels chronic; our anxieties, amplified. Proliferating technologies command our attention. Many people complain of burnout, and economic instability and the threat of ecological catastrophe fill us with dread. We look to the past, imagining life to have once been simpler and slower, but extreme mental and physical stress is not a modern syndrome. Beginning in classical antiquity, this book demonstrates how exhaustion has always been with us and helps us evaluate more critically the narratives we tell ourselves about the phenomenon. Medical, cultural, literary, and biographical sources have cast exhaustion as a biochemical imbalance, a somatic ailment, a viral disease, and a spiritual failing. It has been linked to loss, the alignment of the planets, a perverse desire for death, and social and economic disruption. Pathologized, demonized, sexualized, and even weaponized, exhaustion unites the mind with the body and society in such a way that we attach larger questions of agency, willpower, and well-being to its symptoms. Mapping these political, ideological, and creative currents across centuries of human development, Exhaustion finds in our struggle to overcome weariness a more significant effort to master ourselves.

The brain is the most complex organ in our body. Indeed, it is perhaps the most complex structure we have ever encountered in nature. Both structurally and functionally, there are many peculiarities that differentiate the brain from all other organs. The brain is our connection to the world around us and by governing nervous system and higher function, any disturbance induces severe neurological and psychiatric disorders that can have a devastating effect on quality of life. Our understanding of the physiology and biochemistry of the brain has improved dramatically in the last two decades. In particular, the critical role of cations, including magnesium, has become evident, even if incompletely understood at a mechanistic level. The exact role and regulation of magnesium, in particular, remains elusive, largely because intracellular levels are so difficult to routinely quantify. Nonetheless, the importance of magnesium to normal central nervous system activity is self-evident given the complicated homeostatic mechanisms that maintain the concentration of this cation within strict limits essential for normal physiology and metabolism. There is also considerable accumulating evidence to suggest alterations to some brain functions in both normal and pathological conditions may be linked to alterations in local magnesium concentration. This book, containing chapters written by some of the foremost experts in the field of magnesium research, brings together the latest in experimental and clinical magnesium research as it relates to the central nervous system. It offers a complete and updated view of magnesiums involvement in central nervous system function and in so doing, brings together two main pillars of contemporary neuroscience research, namely providing an explanation for the molecular mechanisms involved in brain function, and emphasizing the connections between the molecular changes and behavior. It is the untiring efforts of those magnesium researchers who have dedicated their lives to unraveling the mysteries of magnesiums role in biological systems that has inspired the collation of this volume of work.