Headaches, backache and other pains, light-headedness, jerks and tremors all occur in totally healthy persons.

像头痛、背痛和其他疼痛、头晕、肌肉抽搐、痉挛性震颤等，都是完全健康者也可能发生的。

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Slips of the tongue, headaches, backache and other pains, dizziness, light-headedness, numbness, muscle twitches, jerks, cramps, and tremors all occur in totally healthy persons.

像口误（slips of the tongue）、 头痛、背痛和其他疼痛、头晕、肌肉抽搐或抽动、痉挛性震颤等，都是完全健康者也可能发生的。

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Signs of dehydration include fatigue, flushed skin, heat intolerance, light-headedness and dark colored urine.

FORBES: Death from Dehydration

In the other studies, there was no evidence of adverse effects on kidney and liver function, no reports of light-headedness or loss of consciousness, no evidence of fluid or electrolyte loss that might contribute to heat stroke.

FORBES: Is A Popular Dietary Supplement A Killer Or A Scapegoat?