A recent systematic review and meta-analysis of 21 randomized, placebo-controlled trials examining the effect of B-vitamin supplementation found the supplementation decreased homocysteine concentrations and improved measures global cognitive function but had no effect on individual measures of executive function, information processing speed, or episodic memory (89)
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Some people Other strategies that sucking on sugar-free lemon drops, gum, or mints eating fresh fruits and vegetables avoiding canned fruits or vegetables seasoning foods with tart flavors like lemon, citrus fruits, and vinegar exploring different protein sources such as chicken, fish, and beans freezing fresh fruit to snack on Zinc salts A zinc deficiency can also cause a metallic taste in the mouth, and supplementing with zinc salts may help improve taste
Available online: [DOI] [PMC free article] [PubMed] [Google Scholar] 29.Schloss J.M., Colosimo M., Airey C., Masci P., Linnane A.W., Vitetta L