There is a substance in red wine called Reservatrol which appears to enhance mobility, preventing the damaging effects of the breakdown of Dopamine by free radicals.

As the research article says:

'Previous studies have shown that resveratrol — an antioxidant found in red wine and dark-skinned fruits — might help reduce inflammation, lower cholesterol, slash the risk of heart disease and certain cancers and, perhaps, have some anti-aging effects in the body. Resveratrol is available as a dietary supplement and is abundant in foods such as red grapes, blueberries and nuts.'

It's benefit in preventing falls is perhaps it's greatest value to the older person.