A new study has revealed an "unexpected" benefit of Viagra pills, which may protect users from one of the toughest age-related diseases. According to the "New York Post," new research indicates that taking Viagra, the most famous drug for treating erectile dysfunction, reduces the risk of developing Alzheimer's disease by two-thirds. The scientists in the study stated that the well-known Viagra drug might help enhance brain health and reduce levels of toxic proteins that cause dementia. Experts analyzed data from 7.2 million adults in the United States and found that users of the drug had a 69% lower chance of developing Alzheimer's over the next six years. Paramedics noted that the results published in the journal "Nature Aging" suggest that the "little blue pill" could soon be prescribed to treat Alzheimer's. Researchers are planning a new study to directly test the effects of Viagra on patients with early-stage Alzheimer's. The lead researcher, Xiong Cheng from the Genomic Medicine Institute at Cleveland Clinic, said: "Sildenafil, the generic form of Viagra, has been shown to significantly improve cognitive function and memory in preclinical models and has emerged as the best candidate drug for Alzheimer's testing." He added: "Sildenafil may have a positive effect on nerves and also reduces toxic tau protein levels." Currently, about 850,000 Britons suffer from dementia-related diseases, and this number is expected to reach one million within a decade.