8 Reasons You May Have Brain Fog

A vitamin-B12 deficiency might be to blame for your brain fog

Difficulties with thinking and reasoning are just one of a host of symptoms of a vitamin B-12 deficiency. Some other symptoms of this deficiency include balance problems, weakness, fatigue, and numbness or tingling in the hands, legs, or feet, according to Harvard Health.Older individuals experiencing dietary changes or a decreased food intake as well as strict vegetarians and vegans who are not consuming enough of the vitamin are at higher risk of developing this deficiency.