Heather Johnson

All articles by Heather Johnson

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With no conclusive preclinical diagnostic test for Parkinson disease, diagnosis is achieved primarily through observations by a physician of the decline in motor functions. And while studies of sebum are commonplace in dermatological conditions, sebum as a biofluid has rarely been used in disease diagnostics.

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The comorbidity of depressive disorders and late-life neurodegenerative diseases including Alzheimer disease has been widely reported. This study looks into whether there is a causal relationship existing between both or, if their co-occurrence is due to confounding or common risk factors, such as aging.