They found that 12 had developed insulin resistance, meaning their tissues were not responding to the vital body chemical as well as they should.
So it is a disgrace and a pity that when it comes to choosing a new boss to run that vital body, those same ministers have become hopelessly paralysed by national prejudice and regional vanity.
Melatonin is vital for maintaining the body's correct diurnal rhythms - helping a person sleep at night and stay awake during the day.
BBC: News | Health | Immune system blamed for Chronic Fatigue Syndrome
This mechanism apparently evolved to help the body preserve a vital source of energy.
Its functions are vital to the regulation of the body's "circadian rhythms", whose powerful clock-like mechanisms synchronise the body with the 24 -hour period that is day and night.
In traditional Chinese medical theory, the core concept is the qi, the vital energy that is believed to circulate throughout the body.
"A 5mm (0.2 inches) particle striking a large solar array is likely to have a very little long-lasting effect, but such an object hitting the main body of a satellite could cause a vital component to fail, " he said.
Your vital organs will function, you'll maintain your body temperature, and your wounds will continue to heal.
The National Farmers' Union chairman in Ceredigion, John Davies, appealed to the Welsh government to continue the "vital research into upland farming" through a collaboration with a research body in the public or private sector.
Unlike the politicians at Copenhagen, the central bank governors and heads of banking supervision who form the oversight body of the Basel Committee on Banking Supervision - which decides these vital rules for banks - well, they don't exactly court the media.
The head of the independent body on decommissioning, General John de Chastelain, is expected to give his vital assessment on illegal arms before the end of January.
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