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Randomized Controlled Trial
. 2025 Jul 11;78(3):e20240380.
doi: 10.1590/0034-7167-2024-0380. eCollection 2025.

Efficacy of cinnamon in reducing anthropometric measurements in individuals with type 2 diabetes: a clinical trial

[Article in English, Portuguese]
José Cláudio Garcia Lira Neto  1 , Márcio Flávio Moura de Araújo  2 , Jardeliny Corrêa da Penha  1 , Maria Augusta Rocha Bezerra  1 , Bruna Karen Cavalcante Fernandes  3 , Thatiana Araújo Maranhão  4 , José Wicto Pereira Borges  5 , Marta Maria Coêlho Damasceno  6
Affiliations
Randomized Controlled Trial

Efficacy of cinnamon in reducing anthropometric measurements in individuals with type 2 diabetes: a clinical trial

[Article in English, Portuguese]
José Cláudio Garcia Lira Neto et al. Rev Bras Enferm. .

Abstract
in English, Spanish

Objectives: to evaluate the effectiveness of cinnamon (Cinnamomum verum) in reducing anthropometric measurements in individuals with type 2 diabetes.

Methods: a randomized, triple-blind, placebo-controlled clinical trial was conducted with 140 participants, divided into an experimental group (n = 71) and a control group (n = 69). The experimental group consumed 3 g/day of encapsulated cinnamon for 90 days. Anthropometric variables were measured at baseline and at the end of the study, with intra-group comparisons performed using a paired t-test.

Results: the majority of participants were women (69.2%) with a mean age of 61 years. Reductions were observed in weight (-0.8 kg, p =0.11), body mass index (-0.36 kg/m2, p =0.16), body adiposity index (-1.02%, p =0.38), waist circumference (-3.97 cm, p =0.67), neck circumference (-0.45 cm, p = 0.68), and hip circumference (-1.83 cm, p =0.49), none of which were statistically significant (p > 0.05).

Conclusions: cinnamon supplementation resulted in reductions in anthropometric measurements compared to placebo, but these differences were not statistically significant.

Objetivos:: analizar la eficacia de la canela (Cinnamomum verum) en la reducción de medidas antropométricas en personas con diabetes tipo 2.

Métodos:: ensayo clínico aleatorizado, controlado con placebo, triple ciego, realizado con 140 participantes divididos en un grupo experimental (n = 71) y un grupo de control (n = 69). El grupo experimental consumió 3 g/día de canela encapsulada durante 90 días. Se midieron variables antropométricas al inicio y al final del estudio, comparadas dentro de cada grupo mediante la prueba t pareada.

Resultados:: la mayoría de los participantes eran mujeres (69,2%), con una edad media de 61 años. Se observó una reducción en el peso (-0,8 kg, p =0,11), índice de masa corporal (-0,36 kg/m2, p =0,16), índice de adiposidad corporal (-1,02%, p =0,38), circunferencia de la cintura (-3,97 cm, p =0,67), circunferencia del cuello (-0,45 cm, p =0,68) y circunferencia de la cadera (-1,83 cm, p =0,49), sin significación estadística (p > 0,05).

Conclusiones:: el uso de la canela redujo las medidas antropométricas en comparación con el placebo, aunque sin alcanzar significación estadística.

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Figures

Figure 1
Figure 1. Clinical trial flowchart, Parnaíba, Piauí, Brazil, 2024
Figura 1
Figura 1. Fluxograma do ensaio clínico, Parnaíba, Piauí, Brasil, 2024
See this image and copyright information in PMC

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