Abstract:
Khat chewing was a significant public health problem and it became a widespread 
practice among adults in Ethiopia. The Khat plant contains amphetamine like compounds, which 
implied in the advancement of high blood pressure. The raised in blood pressure related with the 
plasma Cathinone level. Chronic chewing Khat was associated with adverse health anomalies 
effect such, high blood pressure, heart rhythm disorder, insomnia, liver toxicity, oral cancer 
spermatorrhoea, and hemorrhoid, loss of appetite and gastrointestinal effect. Other factors may 
associated with high blood pressure are being cigarette smoking, alcohol use, stress, physical 
inactivity, unhealthy diet, overweight and obesity. So, this study assessed the association of 
chronic Khat chewing and high blood pressure among adults.
Objective:-The aim of this study is to determine the association of chronic Khat chewing and 
high blood pressure among adults 18 years and above at community level from December 21, 
2021 to March 30, 2022 in West Hararghe Zone, Eastern Ethiopia.
Method: - Community based comparative cross-sectional study were-held from December 21, 
2021 to March 30, 2022 in West Hararghe Zone, Eastern Ethiopia. A total of 772 adults (386 
chewers and 386 non-chewers) aged 18 years and above were selected using multi-stage 
sampling technique. The data collected by an interviewer-administered questionnaire and 
physical measurements carried out at a fixed time of the day in the morning (7: 30 am-10:30 am). 
The collected data was analyzed using SPSS version 21. Descriptive statistics used to summarize 
socio-demographic and other related characteristics of the study unit. Bivariate and multivariate 
logistic regression for potential cofounder and binary logistic regression analysis performed to 
identify the association of chronic khat chewing and high blood pressure. The test of statistically 
significant association declared by using 95% CI and p-value less than 0.05 using logistic 
regression analysis.
Result: -A 772 subjects participated in the study giving a response rate of 100%. From the total 
study participants, 453(58.7%) were males with 280 Khat chewers and 173 non-chewers, were as 
319 (41.3%) female with 106 Khat chewers and 213 non-chewer. This study revealed that, 
diastolic blood pressure greater than 80mmHg was significantly higher among chronic Khat 
chewers than in non-chewers 202 (52.33% versus 121(31.35%) p<0.001).The mean systolic 
blood pressure was significantly higher among Khat chewer compared with non-chewers (2.66 
±0.19 versus 2.30 ±0.19, mean difference 0.36 [95% CI 0.46, 0.27] p<0.001). Similarly, the 
mean diastolic blood pressure was significantly higher among Khat chewers compared with non chewers (2.65 ±0.21 versus 2.32 ±0.21, mean difference 0.33 [95% CI 0.43, 0.22], and p < 
0.001).Chronic Khat chewing had 2.94 times higher risk of developing high blood pressure than 
non-chewers (AOR: 2.94, 95% CI: 2.17, 3.98).
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Conclusion:-The overall prevalence of high blood pressure in this study was 52.7%. The finding 
of this study revealed that chronic Khat chewers were associated with elevated BP.