Cigarette smoke is the leading preventable cause of chronic obstructive pulmonary disease (COPD) and smoking cessation can improve respiratory and metabolic health.
A study assessed current smokers' respiratory functions and metabolic changes after one month of quitting using various tests and methods, including spirometry and blood samples.
Results showed significant improvements in lung function, reduced exhaled carbon monoxide levels, increased vitamin D, and lower cholesterol after one month of smoking cessation, highlighting the benefits of quitting.