Thyroid disorders can cause difficulty with energy, concentration, and memory—often described as “brain fog ... weight loss ...

Ensuring adequate intake of B vitamins can be instrumental in combating brain fog and promoting sharper focus. According to ...

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Long Covid can take different forms but why it develops remains unclear Blood clots in the brain or the lungs might explain some common symptoms of "long Covid", including brain fog and fatigue ...

More than 200 long COVID symptoms have been identified, but some common symptoms are tiredness and fatigue that interrupts daily life, brain fog ... Long covid: Hair loss and sexual dysfunction ...

or have constant brain fog, like forgetting where you put your car keys, check with your doctor. You could have an underactive thyroid. Other symptoms could be fatigue, weight gain, and hair loss.