As for harm, brain and nerve damage from silver exposure is rare, but colloidal silver can cause kidney damage, stomach distress, and headaches.
至于害处，虽然银暴露对脑和神经的损伤比较罕见，但胶银能导致肾损伤、腹痛及头痛。
The NCCAM says such claims are unfounded. The FDA in 1999 issued a ruling that no products containing colloidal silver are recognized as safe or effective.
NCCAM表示，这些说法是没有根据的。FDA在1999年裁定，任何含有胶银的产品，都不被认定为安全或有效。
The NCCAM says such claims are unfounded. The FDA in 1999 issued a ruling that no products containing colloidal silver are recognized as safe or effective.
NCCAM表示，这些说法是没有根据的。FDA在1999年裁定，任何含有胶银的产品，都不被认定为安全或有效。
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