Sleep is an evolutionary paradox. In pre-historic times, periods of sleep would have been windows of opportunity for predators and periods of susceptibility to dangerous natural calamities. The chances of losing life for early humans during sleep must have been very very high. Yet sleep has persisted throughout evolution in practically all animals -- why?
Schizophrenia is an adult-onset disorder that can significantly disrupt the life of patients as well as their primary caregivers. Diagnosis is essentially a post-hoc assessment, but by then, neurocognitive deficits are permanent and curative treatment options to improve the quality of life of patients are more limited. Early assessment of the risk of developing schizophrenia is essential to bring in interventions to reduce the impact of these deficits.
A thunderclap headache. Post-partum cerebral angiopathy. Sub-arachnoid hemorrhagic headache. Posterior reversible encephalopathy. Primary and benign angiopathies of the central nervous system. Call-Fleming syndrome. I am not throwing the dictionary at you. These are all sudden onset headaches resulting from changes in the flow of blood in cerebral arteries. Recent opinion tends to aggregate all these kinds of headaches under a common term, Reversible Cerebral Vasoconstriction Syndrome (RCVS).
Excess food intake makes you fat. High calorie foods make you gain excess fat. Excess carbohydrates and saturated fatty acids get taken up by fat cells and get converted into fatty acids stored within them. This is what we know of the straightforward relationship between diet and obesity. Yet, the relationship between food choices and obesity is not so linear or short-term. Food choices and obesity have a more complex interdependence.