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Vol. 40. Issue 2.
Pages 99-104 (April - June 2020)
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Vol. 40. Issue 2.
Pages 99-104 (April - June 2020)
Original Article
DOI: 10.1016/j.jcol.2019.10.006
Open Access
Nutritional status and consumption of inflammatory and anti-inflammatory foods by patients with inflammatory bowel diseases
Estado nutricional e consumo de alimentos inflamatórios e anti-inflamatórios por pacientes portadores de doenças inflamatórias intestinais
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Rafaela dos Santos Dilly, Claiza Barretta
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claiza@univali.br

Corresponding author.
, Cristina Henschel Matos, Bárbara Tortato Piasecki, Bruno Lorenzo Scolaro, Everson Fernando Malluta, Sueli Bobato, Clarice Maria Specht, Munique Kurtz de Mello, Matheus Copi Kimura, Clara Garcia Miranda
Universidade do Vale do Itajaí, Itajaí, SC, Brasil
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Tables (3)
Table 1. Characterization of patients treated at the Inflammatory Bowel Disease outpatient clinic of a School Health Service, Itajaí, SC, 2018.
Table 2. Frequency of anti-inflammatory food consumption of patients in the Inflammatory Bowel Diseases outpatient clinic of a School Health Service, Itajaí, SC, 2018.
Table 3. Frequency of inflammatory food consumption by patients in the Inflammatory Bowel Diseases outpatient clinic of a School Health Service, Itajaí, SC, 2018.
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Abstract
Objective

Evaluation of nutritional status and consumption frequency of inflammatory and anti-inflammatory food by patients with inflammatory bowel diseases.

Methods

An observational study of the patients assisted by the interdisciplinary inflammatory bowel diseases ambulatory of UNIVALI-SC. The nutritional status of patients was evaluated and each patient was categorized according to his/her body max index and also through a research questionnaire of the individual social-economy situation, life habits, and inflammatory and anti-inflammatory food consumption in a determinate period of time.

Results

Out of the 65 patients, 57% had Crohn’s disease and 43% had ulcerative colitis. According to the disease activity, 71% were in remission and 29% in activity. Of the sample, 57% were classified as overweight. It was not possible to correlate nutritional status and type of inflammatory bowel diseases, nutritional status and income or nutritional status and level of education. The most inflammatory foods were beef (65%) and coffee (60%), while the anti-inflammatory ones were garlic (75%), olive oil (54%), and sweet potatoes (23%). There was no association between the most consumed inflammatory and anti-inflammatory food and body max index.

Conclusion

According to the results, most of the patients were overweight. The most commonly consumed inflammatory foods were beef and coffee and the anti-inflammatory ones were garlic, olive oil, and sweet potatoes.

Keywords:
Crohn’s disease
Ulcerative colitis
Inflammatory bowel disease
Food consumption
Resumo
Objetivo

Avaliar o estado nutricional e a frequência de consumo de alimentos inflamatórios e anti-inflamatórios por portadores de doenças inflamatórias intestinais.

Metodologia

Estudo transversal com indivíduos assistidos pelo ambulatório interdisciplinar de doenças inflamatórias intestinais da UNIVALI-SC. Avaliados por meio do estado nutricional e classificados de acordo com o índice de massa corporal, bem como através de um questionário contendo dados socioeconômicos, hábitos de vida e frequência do consumo de alimentos inflamatórios e anti-inflamatórios.

Resultados

Dos 65 pacientes, 57% eram portadores de doença de Crohn e 43% de retocolite ulcerativa. De acordo com a atividade da doença, 71% encontravam-se em remissão e 29% em atividade. Da amostra, 57% foram classificados como acima do peso. Não foi possível correlacionar estado nutricional e o tipo de doenças inflamatórias intestinais, estado nutricional e renda ou estado nutricional e escolaridade. Os alimentos inflamatórios mais consumidos foram carne de gado (65%) e café (60%), já os anti-inflamatórios foram alho (75%), azeite de oliva (54%) e batata doce (23%). Não houve associação entre os alimentos inflamatórios e anti-inflamatórios mais consumidos e o índice de massa corporal.

Conclusão

Segundo os resultados, observou-se que a maioria dos pacientes apresentava excesso de peso. Os alimentos inflamatórios mais consumidos foram carne de gado e café e os anti-inflamatórios foram alho, azeite de oliva e batata doce.

Palavras-chave:
Doença de Crohn
Retocolite ulcerativa
Doenças inflamatórias intestinais
Consumo de alimentos
Full Text
Introduction

Inflammatory Bowel Diseases (IBD), consisting of Crohn’s disease (CD) and ulcerative colitis (UC), is characterized by chronic mucosal infection, need for frequent hospitalization and poor quality of life.1 IBD symptoms may include abdominal pain, diarrhea, fatigue, weight loss, among others. These symptoms have a direct impact on patients’ quality of life, as they are altered in their eating habits, psychological well-being and social aspects, such as relationships, school, work, and leisure.2

Both CD and UC present important nutritional changes, which are mainly related to disease activity. One purpose of diet therapy in IBD is the consumption of foods that decrease disease activity and improve nutritional status.3 Nutritional orientation is an important factor in intestinal microbiota homeostasis, as it directly influences organ composition and function, as well as providing immunity to the host by regulating and releasing intestinal hormones.4

Some foods such as pumpkin, sardines, olive oil and garlic, for example, are classified as anti-inflammatory foods and by consuming them there may be reductions in inflammatory processes and extra-intestinal manifestations, promoting a major impact on quality of life of IBD patients.5

Method

This is a descriptive, cross-sectional quantitative study in which individuals diagnosed with IBD were evaluated, assisted by the Interdisciplinary IBD Outpatient Clinic of the Family and Community Health Unit (Unidade de Saúde Familiar e Comunitária – USFC) of Itajaí, SC, from August 2017 through June 2018.

The inclusion criteria were age over 18 years, written informed consent, and having a diagnosis of IBD. The study design was approved by the Research Ethics Committee, Opinion number 2.164.418, in August 2017.

Data collection was performed using a questionnaire, which included patients’ identification, socioeconomic characteristics, lifestyle and health habits, type of IBD, signs and symptoms, seizure frequency, and disease activity data.

The socioeconomic classification of the evaluated patients was performed using the Brazil Economic Classification Criterion (Critério de Classificação Econômica Brasil), proposed by the Brazilian Institute of Geography and Statistics (Instituto Brasileiro de Geografia e Estatística – IBGE) and updated by the Brazilian Association of Research Companies (Associação Brasileira de Empresas de Pesquisa – ABEP), considering data such as family income and education.6,7

Nutritional status was assessed by body weight measurements using a digital scale (WISO® W801) with 180kg capacity and 0.1kg accuracy. Subjects were evaluated wearing light clothing without shoes, standing in a static position in the center of the scale platform. Height (cm) was measured with the subject in the standing position, using a 2.00m anthropometric ruler attached to a mechanical scale (WELMY® R-110). The anthropometric assessment was performed using the Body Mass Index (BMI) indicator and the nutritional status was classified according to the criteria proposed by the World Health Organization for adults in order to obtain the nutritional diagnosis.8 For statistical purposes, nutritional status was re-categorized into normal weight and overweight.

To assess the frequency of inflammatory and anti-inflammatory food consumption, we applied a semi-quantitative Food Consumption Questionnaire, adapted from Odierno et al.9, dividing these foods into three categories of consumption: (1) non-consumption; (2) consumption up to 3 times a week; (3) consumption 3 or more times a week, which were tabulated and presented as a percentage of consumption.

Data collected in the research were tabulated with the aid of Microsoft Excel® and Word® software programs. The results are presented in tables, and statistical analysis was performed using the Statistica 13® software. Quantitative variables were calculated as means and standard deviations. Categorical variables were described by their absolute and relative frequencies. The association between categorical variables was tested using Pearson’s chi-square test and, for quantitative variables, Spearman correlation was used. Differences were considered significant when p0.05.

Results

Sixty-five IBD patients were interviewed, most of them female (66%), with a mean age of 48 years. According to Table 1; 57% had CD and 43% had UC, and disease remission and disease activity were seen in 71% and 29%, respectively.

Table 1.

Characterization of patients treated at the Inflammatory Bowel Disease outpatient clinic of a School Health Service, Itajaí, SC, 2018.

VariablesUCCDTotal
Smoking             
Yes 
No  28  43  37  57  65  100 
Former smoker  10  15  14  19  29 
Alcoholism             
Yes  14  10  15  19  29 
No  19  29  27  42  46  71 
Most used drugs             
Mesalazine  22  34  15  23  37  57 
Azathioprine  11  18  28  25  39 

Income: Class C=from R$ 1,874 to R$ 9,370; Class D=from R$ 937 to R$ 1,874; Class E=up to R$ 937. Education: Class A=11 or more years; Class B=8–10 years; Class C=4–7 years; Class D=<4 years.

Among all patients evaluated, 43% (n=28) were classified as eutrophic and 57% (n=37) as overweight. The majority, 65% (n=42), reported losing weight in the 6 months prior to the interview, and 38% (25) reported an average weight gain of 6kg. It is noteworthy that 100% of patients received guidance from nutritionists.

The symptoms most frequently reported by UC patients were abdominal pain and distension, while CD patients reported abdominal and joint pain. The average time since diagnosis was 6.33 years.

Only 23% of the patients used biological medicines.

Of the participants who reported consuming alcohol (29%; n=19), the average consumption was 0.35 drinks per week and the most cited drink was beer.

The frequency of consumption of anti-inflammatory and inflammatory foods is presented in Tables 2 and 3. The inflammatory foods most consumed by patients were beef (65%) and coffee (60%) and the anti-inflammatory ones were garlic (75%), olive oil (54%), and sweet potato (23%).

Table 2.

Frequency of anti-inflammatory food consumption of patients in the Inflammatory Bowel Diseases outpatient clinic of a School Health Service, Itajaí, SC, 2018.

FoodsConsumption ≥3 times a weekConsumption <3 times a weekNon-consumption
Pumpkin  42  65  17  26 
Garlic  49  75  12  12 
Tuna fish  19  29  43  66 
Olive oil  35  54  11  23  35 
Sweet potato  15  23  35  54  15  23 
Yam  13  20  50  77 
Green tea  11  17  11  47  72 
Ginger  12  22  34  35  54 
Guava  24  37  36  55 
Honey  14  24  37  32  49 
Walnuts  11  17  18  28  36  55 
Omega 3  58  89 
Propolis  54  83 
Salmon  18  28  46  71 
Sardine  11  29  45  29  45 
Chia Seed  12  14  48  74 
Table 3.

Frequency of inflammatory food consumption by patients in the Inflammatory Bowel Diseases outpatient clinic of a School Health Service, Itajaí, SC, 2018.

FoodsConsumption ≥3 times a weekConsumption <3 times a weekNon-consumption
Black coffee  39  60  24  37 
Mate  12  14  48  74 
Chocolate  23  35  40  62 
Smoked foods  12  24  37  33  51 
Chili  11  53  82 
Beef  42  65  20  31 
Monosodium glutamate (ajinomoto)  11  12  50  77 
Lactose milk  11  12  50  77 
Sweets  17  26  34  52  14  22 

It was not possible to find a statistically significant association between nutritional status and type of IBD (p=0.97), nutritional status and income (p=0.15), and nutritional status and education (p=0.94).

There was no correlation between the most consumed anti-inflammatory and inflammatory foods and BMI.

Discussion

Although the etiopathogenesis of IBD is still unknown, it is believed that diet has a significant influence on the development and progression of these diseases, as well as epidemiological interactions, diet versus microbiota, with its protective/aggressive factors, and life habits.10

In this series, females account for 66% of the sample. A study by Betteridge et al.11 assessing more than 35,000 IBD patients, found that the proportion of women is higher in both CD and UC. This prevalence is possibly due to hormonal factors that may interfere with the expression of inflammatory processes and disease.12

Income is an important variable to be evaluated, as it makes evident the possibility of acquiring the necessary items for self-care, such as food. Parente13 identified an average monthly income of R$ 1,731.80 when analyzing the demographic characteristics and clinical phenotypes of IBD patients in Northeastern Brazil. This value, as well as that found in the present research, which was above R$ 1,597.00 of nominal monthly household income per capita in 2017 in the state of SC according to the IBGE,6 may have contributed to the remission status of most respondents. This income may be related to education, since most patients had some access to education and have at least 8–10 years of schooling.

Some risk factors such as smoking and alcoholism increase the predisposition to IBD development. Although none of the patients interviewed reported smoking, 22% claimed to be former smokers. It is known that in CD, smoking is associated with more complications, increased steroid use, as well as a greater need for surgical treatment.14 In addition, certain chemical materials produced by tobacco can modify the way blood flows through the intestines, causing a restriction of blood flow within the intestinal walls.

Regarding alcoholism, 29% of respondents drunk alcohol. Alcohol intake irritates the gastrointestinal tract mucosa, leading to abdominal distension and increased susceptibility to bacterial infections. Although the average consumption among patients is small, the effects that alcohol can have on health may be severe and worsen the disease prognosis.15

Abdominal pain and distension are the most reported symptoms in the literature.16,17 Joint pain, which was reported as one of the three main complaints of patients, is also common because CD and UC involve other organs and systems through extraintestinal manifestations. The frequency of these manifestations ranges from 21% to 47% and is more common in CD patients.18

Patients lack differentiated attention to nutritional aspects. Studies show that nutritional status is associated with the severity with which IBD develops, resulting in a negative prognosis and impaired immune competence in these patients.19

Although all patients were evaluated by the nutritionists of the outpatient multidisciplinary team, 57% (n=37) were diagnosed as overweight. Factors such as medication and lifestyle may directly influence this classification.

Diet is an important factor in improving nutritional status.20 Some foods have anti and pro-inflammatory action, which makes diet a relevant factor also in the context of IBD prevention, treatment, development, and warsening.9

Beef was the most consumed inflammatory food by patients. Filippo et al.21 found a decrease in fecal short-chain fatty acids in Italian people eating a diet high in this animal protein. The byproducts of these acids (e.g., butyrate) are known to act by strengthening the mucosal barrier and reducing the risk of inflammation.22,23 Another study has also shown that IBD patients have smaller amounts of fecal butyrate-producing bacteria compared to healthy people.24

In a prospective study with 67,581 patients, Jantchou et al.25 assessed the role of dietary macronutrients in the etiology of IBD and concluded that such bacterial changes may be a consequence of a diet rich in animal protein, increasing the risk of incident IBD.

Coffee was the second most consumed inflammatory food by respondents. Caffeine, an alkaloid present in coffee, has a mechanism of action structurally similar to that of the highly energetic adenosine molecule, which upon binding breakdown releases energy to cellular activities and can then connect to its receptors (A1, A2A), blocking them and triggering stimulating action.9,26

Cited above as a proinflammatory substance, caffeine when administered during an acute inflammatory process in rats increased tissue damage evidenced by increased mRNA levels of TNF-alpha, TNF-beta, lymphotoxin-beta, IL-6, and IFN-gamma cytokines in the spleen and increased IFN-gamma in peripheral blood.9

Corroborating the present study findings, Ide and Lau27 in an in vitro study reported that aged garlic extract and one of its main compounds (S-allylcysteine) inhibited Tumor Necrosis Factor-α (TNF-α) induced nuclear factor-κB activation. Lee et al.28 investigated four garlic sulfur compounds and found that all four considerably suppressed the production of inflammatory mediators, such as Nitric Oxide (NO), Prostaglandin E2 (PGE 2), IL-1β and IL-6 interleukin expressions, and TNF-α messenger RNA (mRNA), showing that garlic can be considered a favorable therapeutic agent for IBD management.

Olive oil was one of the most consumed anti-inflammatory foods by respondents and its use is considered positive. Lundin et al.29 reported that unsaturated fats increase the levels of Streptococci, Lactobacillus, Bifidobacterium, and Akkermansia muciniphila, which inhibit the Toll-like Receptor (TLR) molecules responsible for the recognition of microbial structures and signal generation, resulting in the production of proinflammatory cytokines.

Regarding sweet potato, Ishiguro et al.30 reported that the roots are rich in polyphenols, derived from caffeoylquinic acids, which have anti-inflammatory activity.

Conclusion

From the results obtained, it was possible to observe that most patients were overweight. This may be related to the fact that most respondents were experiencing disease remission and because it is an outpatient population.

There was no correlation between nutritional status and income, education and type of IBD, as well as no correlation between the most consumed anti-inflammatory and inflammatory foods and BMI.

The inflammatory foods most consumed by the patients were beef and coffee, while the anti-inflammatory foods were garlic, olive oil, and sweet potatoes.

Given the importance of diet therapy in IBD, further studies are suggested to provide more support for the treatment of these patients.

Conflicts of interest

The authors declare no conflicts of interest.

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