Protein may counteract some
of the negative effects associated with excessive stress, specifically the tryptophan content
of protein may increase the brain's serotonin levels — excessive stress often
causes serotonin depletion and this depletion
of serotonin is one
of the
causes of symptoms like dull headaches,
tiredness, irritability,
feelings of anxiousness, sleeping disturbances and a heightened sense
of pain.
How they can
cause fatigue: Researchers have long known that some people who take antibiotics experience
feelings of tiredness and extreme fatigue, but it's still not clear exactly why.