Intense romantic love is associated with specific physiological, psychological and behavioural changes, including euphoria, obsessiveness, and a craving for closeness with the target.
The key is the pea-sized pineal gland, which produces melatonin. This hormone plays a key role in the circadian cycle. It has also shown anti-dopamine activities in part of the brain, while a second hormone, arginine-vasotocin, also has a key role in romantic love. The researchers suggest that giving the two hormones may be a cure for non-returned romantic love.(Alabama and Iran? I wonder whether there's any deeper significance to two places known for religiously-based social conservatism being at the forefront of research to control a powerful and sometimes disruptive phenomenon. Is it heartening or disturbing that, even as talk of a US/Iranian war grows louder, US and Iranian scientists can join forces in the War On Unrequited Love?)
Also in the same article: taking showers may cause a neurodegenerative condition associated with inhalation of manganese, keeping dogs may cause breast cancer and sunlight may increase violent impulses.
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