Evaluation of the role of dietary intake in the occurrence of alopecia
Abstract
Transversal case-control study was conducted among 42 patients aged between 20 and 35 years who had diffuse alopecia. Alimentary inquiry according to the 3-day method was achieved in each case. The following nutriments were evaluated: total proteins, calcium, copper, iron, iodine, magnesium, manganese, phosphorus, potassium, selenium, zinc, omega 3 and omega 6. A control group (composed of 230 individuals), matched for age, gender and metabolic profile was established. These persons did not suffer from hair and nail disorder. The nutriments were codified according to the data of the software Food processor 8.3 version. The data were analyzed using "SPSS" 11.5 version. Comparisons of the means were performed using the Student's t test. ROC graphics allowed to determine the statistically significative limits for the comparison of both groups. On multivariate analysis, only a protein intake was directly associated to alopecia, odds ratio of 1,5 (1,06 - 2,3) p=0,02.
How strong is the evidence?
Evidence Hub reads this as a case-control, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 230 participants or records.
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