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2. Sleep apnea - Wikipedia

   en.wikipedia.org/wiki/Sleep_apnea

   Alzheimer's disease and severe obstructive sleep apnea are connected [39] because there is an increase in the protein beta-amyloid as well as white-matter damage. These are the main indicators of Alzheimer's, which in this case comes from the lack of proper rest or poorer sleep efficiency resulting in neurodegeneration.

3. Loop gain - Wikipedia

   en.wikipedia.org/wiki/Loop_gain

   The loop gain is calculated by imagining the feedback loop is broken at some point, and calculating the net gain if a signal is applied. In the diagram shown, the loop gain is the product of the gains of the amplifier and the feedback network, −Aβ. The minus sign is because the feedback signal is subtracted from the input.

4. Obstructive sleep apnea - Wikipedia

   en.wikipedia.org/wiki/Obstructive_sleep_apnea

   Without treatment, the sleep deprivation and lack of oxygen caused by sleep apnea increases health risks such as cardiovascular disease, aortic disease (e.g. aortic aneurysm), [165] high blood pressure, [166] [167] stroke, [168] diabetes, clinical depression, [169] weight gain, obesity, [66] and even death.

5. Labcorp launches 3-part blood test for Alzheimer's - AOL

   www.aol.com/news/labcorp-launches-3-part-blood...

   Labcorp on Wednesday began marketing to U.S. physicians the first test for a trio of blood biomarkers it says can detect the hallmarks of Alzheimer's, accelerating diagnosis of the brain-wasting ...

6. Respiratory disturbance index - Wikipedia

   en.wikipedia.org/wiki/Respiratory_disturbance_index

   The respiratory disturbance index (RDI)—or respiratory distress Index—is a formula used in reporting polysomnography (sleep study) findings. Like the apnea-hypopnea index (AHI), it reports on respiratory distress events during sleep, but unlike the AHI, it also includes respiratory-effort related arousals (RERAs). [1]

7. New blood test that screens for Alzheimer’s may be a step ...

   www.aol.com/news/blood-test-screens-alzheimer...

   Testing a person’s blood for a type of protein called phosphorylated tau, or p-tau, could be used to screen for Alzheimer’s disease with “high accuracy,” even before symptoms begin to show ...