Middle-aged adults with biological signs of poor heart health are more likely to go on to be diagnosed with dementia in later life, according to a new study.

These biological signals could be evident up to 25 years before a dementia diagnosis, researchers found.

Experts said people should focus on maintaining good heart health throughout their lives to reduce their risk of dementia later on through being active, managing blood pressure and cholesterol levels and maintaining a healthy weight.

The new study, published in the European Heart Journal, examined levels of a protein called troponin in the blood. This protein is released into the blood stream when the heart muscle is damaged, and doctors look for very high levels in people they suspect are having a heart attack.

If there are hi

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