A new study has found a connection between increased daytime tiredness and early signs of the memory-loss health issue. The analysis can be found in 'Alzheimer's & Dementia: Journal of the Alzheimer's Association.' For their study, researchers observed 13 brains from people who died with Alzheimer's. Against seven other brains without the disease, they found that organ parts which keep us awake during the day were weaker. Scientists say they are still unclear on the length of time between increased daytime sleepiness and the onset of Alzheimer's disease. They concluded that more studies on the link need to be conducted.