Effect of wearing cotton towel Ihram and plain Ihram on lung function among Hajj Pilgrims.

Objectives: Hajj is the world's largest gathering to Makkah, Saudi Arabia. Wearing cotton made Ihram is a basic and an essential component of Hajj. The aim of this study was to investigate the lung functions among Hajj pilgrims who were wearing cotton towel ihram (ihram with fibers) compared to those who were wearing plain cotton ihram (ihram without fibers).

Lung function and fractional exhaled nitric oxide among petroleum refinery workers.

Background: Occupational and environmental exposure to petroleum refinery products poses a great threat to human health. This study aimed to assess the lung function and Fractional Exhaled Nitric Oxide (FeNO) among petroleum refinery workers.

Methods: In this cross-sectional study, 112 participants (56 petroleum refinery workers with mean age 35.