The research also demonstrated that statin users had a 23 per cent reduction in the risk of stroke, which is three times more likely in patients with mild dementia and seven times more likely in those with severe dementia.
Parkinson's disease is the second most common neurodegenerative disorder, after Alzheimer's disease. The disease is characterised by movement and cognitive problems but is known to become established in the brain a long time before patients are diagnosed.
Researchers at Radboud University in the Netherlands found the drug nilvadipine increased blood flow to the brain's memory and learning centre among people with Alzheimer's without affecting other parts of the brain.
The study, published in the journal PLoS One, found that healthy younger and older adults who received repetitive transcranial magnetic stimulation (rTMS) therapy performed better on a memory task than those who received placebo.
The research, published in the journal Science Advances, found that molecules from the immune system of the parasitic sea lamprey may also be combined with a wide array of other therapies, offering hope to treat disorders like multiple sclerosis, Alzheimer's disease or even traumatic injuries.