Exposure to air pollution and meteorological factors associated with children's primary care visits at night due to asthma attack: case-crossover design for 3-year pooled patients.

Objective: We examined the association of outdoor air pollution and meteorological parameters with primary care visits (PCVs) at night due to asthma attack.

Setting: A case-crossover study was conducted in a primary care clinic in Himeji City, Japan.

Participants: Participants were 1447 children aged 0-14 years who visited the clinic with an asthma attack from April 2010 until March 2013.

Association between PM2.5 and primary care visits due to asthma attack in Japan: relation to Beijing's air pollution episode in January 2013.

Aim: In January 2013, extremely high concentrations of fine particles (PM2.5) were observed around Beijing, China. In Japan, the health effects of transboundary air pollution have been a matter of concern.

Association of ambient air pollution and meteorological factors with primary care visits at night due to asthma attack.

Aim: The association of outdoor air pollution and meteorological elements with primary care visits at night due to asthma attack was studied.

Methods: A case-crossover study was conducted in a primary care clinic in Himeji City, Japan. The subjects were 956 children aged 0-14 years who visited the clinic with an asthma attack between the hours of 9 p.

Lifestyle-related disease in Crohn's disease: relapse prevention by a semi-vegetarian diet.

Aim: To investigate whether semi-vegetarian diet (SVD) has a preventive effect against relapse of Crohn's disease (CD) in patients who have achieved remission, who are a high-risk group for relapse.

Methods: A prospective, single center, 2-year clinical trial was conducted. Twenty-two adult CD patients who achieved clinical remission either medically (n = 17) or surgically (n = 5) and consumed an SVD during hospitalization were advised to continue with an SVD and avoid known high-risk foods for inflammatory bowel disease.