Experts say elevated heart rate variability (HRV) is one of the most significant risk factors for developing dementia.

They say it may also increase the severity of symptoms, which may be harder to diagnose and treat.

The U.S. Food and Drug Administration (FDA) recently published a new guidelines for determining HRV levels in patients with dementia.

The guidelines, released Monday, recommend that doctors monitor HRV to determine whether the patient is at increased risk of dementia.

Here are the key points: Heart rate variations are linked to the risk for developing Alzheimer’s disease, but researchers say that the risk is much higher in the elderly.

The risk for dementia increases with age.

There are several factors that increase the likelihood of developing Alzheimer in the older age group.

Among them: the age at onset of dementia, the duration of symptoms and the presence of dementia-related symptoms.