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Effects of long-term benzodiazepine use
The effects of long-term benzodiazepine use include drug dependence as well as the possibility of adverse effects on cognitive function, physical health, and mental health. Benzodiazepines are generally effective when used therapeutically in the short-term. Most of the problems associated with benzodiazepines result from their long-term use. There are significant physical, mental and social risks associated with the long-term use of benzodiazepines. However, not all people experience problems associated with the long-term use of benzodiazepines. There is evidence that reduction or withdrawal from benzodiazepines can lead to a reduction in anxiety symptoms, although some with panic or anxiety issues may respond solely to benzodiazepine treatment. Due to these increasing physical and mental symptoms from long-term use of benzodiazepines, slowly withdrawing from benzodiazepines is recommended for many long-term users.〔 Not everyone, however, experiences problems with long-term use.
Some of the symptoms that could possibly occur as a result of long-term use of benzodiazepines include emotional clouding,〔 flu-like symptoms,〔 nausea, headaches, dizziness, irritability, lethargy, sleep problems, memory impairment, personality changes, aggression, depression, social deterioration as well as employment difficulties, while others never have any side effects from long term benzodiazepine use. One should never abruptly stop using this medicine and should wean themself down to a lower dose under doctor supervision. While benzodiazepines are highly effective in the short term, adverse effects in some people associated with long-term use including impaired cognitive abilities, memory problems, mood swings, overdoses when combined with other drugs may make the risk-benefit ratio unfavourable, while others experience no ill effects. In addition, benzodiazepines have reinforcing properties in some individuals and thus are considered to be addictive drugs especially in individuals that have a "drug-seeking" behavior; in addition, a physical dependence can develop after a few weeks or months of use. Many of these adverse effects of long-term use of benzodiazepines begin to show improvements three to six months after withdrawal.〔
Other concerns about the effects of long-term benzodiazepine use, in some, include dose escalation, benzodiazepine abuse, tolerance and benzodiazepine dependence and benzodiazepine withdrawal problems. Both physiological tolerance and dependence can lead to a worsening of the adverse effects of benzodiazepines. Increased risk of death has been associated with long-term use of benzodiazepines in several studies, however, other studies have not found increased mortality. Due to conflicting findings in studies regarding benzodiazepines and increased risks of death including from cancer, further research in long-term use of benzodiazepines and mortality risk has been recommended. Most of the research has been conducted in prescribed users of benzodiazepines; even less is known about the mortality risk of illicit benzodiazepine users. The long-term use of benzodiazepines is controversial and has generated significant controversy within the medical profession. Views on the nature and severity of problems with long-term use of benzodiazepines differ from expert to expert and even from country to country; some experts even question whether there is any problem with the long-term use of benzodiazepines. Political controversy, in particular in the UK, also surrounds the long-term use of benzodiazepines, and was subject to the largest class-action lawsuit in the 1980s and 1990s. There have also been allegations of a cover-up by medical bureaucracies and the government.〔
==Symptoms==
Effects of long-term benzodiazepine use may include disinhibition, impaired concentration and memory, depression, as well as sexual dysfunction. The long-term effects of benzodiazepines may differ from the adverse effects seen after acute administration of benzodiazepines. An analysis of cancer patients found that those who took tranquillisers or sleeping tablets had a substantially poorer quality of life on all measurements conducted, as well as a worse clinical picture of symptomatology. Worsening of symptoms such as fatigue, insomnia, pain, dyspnea and constipation was found when compared against those who did not take tranquillisers or sleeping tablets. Most individuals who successfully discontinue hypnotic therapy after a gradual taper and do not take benzodiazepines for 6 months have less severe sleep and anxiety problems, are less distressed and have a general feeling of improved health at 6 month follow up. The use of benzodiazepines for the treatment of anxiety has been found to lead to a significant increase in healthcare costs due to accidents and other adverse effects associated with the long-term use of benzodiazepines.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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