Scientists increasingly think Alzheimer’s, or its risk factors, can show themselves many more years before diagnosis than we previously suspected. A study published in February found that spatial navigation struggles that seem to be associated with increased dementia risk may be noticeable 25 years before diagnosis, for instance. Some physical changes, like how long you’re able to stand on one leg and gait speed, have also been linked to a higher likelihood of developing dementia, especially combined with mental changes like forgetfulness. And now, a new study has linked increased frailty to dementia nine years ahead of its official diagnosis. How did scientists find that out?Researchers from The University Of Queensland looked at international data