Objective:to compare the biomarkers and the allostatic load levels in a sample of older
persons with and without canine companionship. Method:descriptive and comparative study. Data were collected using a
sociodemographic questionnaire and a fasting blood sample. The allostatic
load comprised 11 biomarkers that are primary and secondary stress
mediators, which arise from the following systems: neuroendocrine, immune,
metabolic, cardiovascular and anthropometric. Results:a significant difference was found in two biomarkers: cortisol
(t= -3.091, df=104,
p=0.003) and total cholesterol (t=
-2.566, df=104, p=0.012), in the
allostatic load levels between older adults with and without a canine
companionship (U= 1714.00, Z= 2.01,
p=0.044). By associating the allostatic load level with the
canine companionship, there was a higher frequency of older adults with low
allostatic load among those who have canine companion, compared with those
who do not have canine companionship. (χ2= 3.69,
df=1, p= 0.043). Conclusion:canine companionship influences health in a positive way, as the allostatic
load is lower in older adults who have a dog as companion, in addition to
presenting lower levels of cortisol and total cholesterol.