A new study has found a genetic link between macular degeneration and Alzheimer's disease—with implications for drug development.

The wellness space often refers to nicotinamide adenine dinucleotide—or NAD. It's found in products promoting longevity—so may give you pause for thought—but shows promising results for human eyesight.

High blood pressure is one of the most toxic risk factors for heart attack, stroke, kidney damage, dementia, and probably premature ageing—so it's incredibly important to get blood pressure under control.

Hosts: Dr Norman Swan and Tegan Taylor