Prevalence of Lactose Malabsorption in Mexican Children: Importance of Measuring Methane in Expired Air

Comparison of an increased waist circumference with a positive hydrogen breath test as a clinical predictor of lactose intolerance

“…25 Meanwhile, in a child population of Mexico, the higher prevalence was observed in the group aged 6-12 years, in 46.4% (4) of participants; i.e., the same behavior as in our sample. 3 The mean age in the group of patients with LI was older compared to the group without LI; such difference was statistically significant. This finding is similar to what has been reported in the literature, where a clear increase has been observed in LI prevalence as patients grow old.…”

“…4 J. N. Keith et al reported an LI prevalence of approximately 20%, 10%, and 8% among African Americans, Hispanic Americans, and European Americans, respectively. 5 Data from a child population of Indonesia show a prevalence of lactose malabsorption of 21.3% in children aged [3][4][5]57.8% in children aged 6-11, and 73% in children aged 12-14; whereas in the Mexican population, the prevalence of LI has been reported to be 41.7%, 46.4%, and 40.5% in preschool children (3-5 years old), school children (6-12 years old), and adolescents (13-17 years old), respectively, 3 evidencing age-related variations.…”

“…2 P a t i e n t s w i t h L I a n d m e t h a n eproducing intestinal flora may also have constipation. 3 The prevalence of LI is affected by different variables such as age and race. 4 J. N. Keith et al reported an LI prevalence of approximately 20%, 10%, and 8% among African Americans, Hispanic Americans, and European Americans, respectively.…”

Comparación del incremento del perímetro abdominal con la prueba de hidrógeno espirado como predictor clínico de intolerancia a la lactosa

“…2 Los pacientes intolerantes con flora intestinal p r o d u c t o r a d e m e t a n o p u e d e n presentar estreñimiento. 3 La prevalencia de IL se ve afectada por variables como la edad y la raza. 4 J. N. Keith et al reportaron una prevalencia de IL entre afroamericanos, hispanoamericanos y americanos europeos de alrededor de 20%, 10% y 8%, respectivamente.…”

“…4 J. N. Keith et al reportaron una prevalencia de IL entre afroamericanos, hispanoamericanos y americanos europeos de alrededor de 20%, 10% y 8%, respectivamente. 5 Datos en una población infantil de Indonesia m u e s t r a n u n a p r e v a l e n c i a d e malabsorción de lactosa de 21,3% en niños de 3-5 años de edad, de 57,8% en niños de 6-11 años de edad y de 73% en niños de 12-14 años; 6 mientras que, en la población mexicana, se reporta una prevalencia de IL de 41,7%, 46,4% y 40,5% en grupos de edad preescolar (3-5 años), escolar (6-12 años) y adolescentes (13-17 años), respectivamente, 3 lo que demuestra las variaciones según la edad. E x i s t e n d i f e r e n t e s m é t o d o s diagnósticos con alta sensibilidad y e s p e c i f i c i d a d ; s i n e m b a r g o , Otro método utilizado es la determinación de actividad enzimática de biopsia yeyunal, que reporta sensibilidad del 95% y especificidad del 90%.…”