We can become less sensitive to insulin as we age. This means our bodies find it harder to move fuel (glucose) from our bloodstream into our cells, including our brain cells, which can leave us forgetful and with foggy thinking.
High levels of the stress hormone cortisol can prevent our brains from being able to manage complex thinking and can impair our memory.
Slow thyroid function reduces energy production in the brain, this results in brain fog and slowed thinking.
Lower oestrogen levels
Oestrogen supports insulin sensitivity and the formation of new brain cells. As it drops, forgetfulness and difficulty forming thoughts can arise.