6. Seek help for depression
Around one million Australian adults are currently living with depression. In depression, some changes occur in the brain that may affect dementia risk. High levels of the stress hormone cortisol have been linked to shrinkage of brain regions that are important for memory.
Vascular disease, which causes damage to blood vessels, has also been observed in both depression and dementia. Researchers suggests that long-term oxidative stress and inflammation may also contribute to both conditions.
A 28-year study of more than 10,000 people found that dementia risk was only increased in those who had depression in the ten years before diagnosis. One possibility is that late-life depression can reflect an early symptom of dementia.
Other studies have shown that having depression before the age of 60 still increases dementia risk, so seeking treatment for depression is encouraged.