Suppose a new study has identified a potential link between sleep deprivation and increased risk of developing Alzheimer's disease later in life. The study, conducted on a group of older adults over a period of 5 years, found that those who consistently got less than 6 hours of sleep per night were more likely to show early signs of cognitive decline.
Can we infer that "Everyone who gets less than 6 hours of sleep per night will develop Alzheimer's disease"?