The Association of Sleep Quality With Anorexia in Patients With Heart Failure: Do Anxiety and Depressive Symptoms Mediate This Association.

The study measured everything at one time, so it cannot show that poor sleep caused appetite loss or that anxiety and depression caused the link. It was done in one hospital in Guangxi and analyzed 210 patients, so results may not apply to other settings or populations. Sleep quality was assessed by patient report, not by an objective sleep test. The analysis did not account for heart failure treatment types, additional medication use such as beta-blockers and diuretics, and dietary habits. Patients had to be able to communicate and consent, and those with severe gastrointestinal disease, death during stay, or a history of sleep disorders, depression, anxiety, or psychiatric diagnosis were excluded, so the sample may not represent patients with severe gastrointestinal disease, communication problems, or prior psychiatric or sleep diagnoses.

Do not conclude that treating sleep problems will reduce appetite loss, or that treating anxiety or depression will treat anorexia. This was a cross-sectional survey, so it shows associations at one time point and did not test a treatment.