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Louis, MO, USA) and 10 g/ml BSA (Sigma-Aldrich)

The signs and symptoms of Chronic Bronchitis may vary from one individual to another, and may include: Persistent cough: A cough that lasts for at least three months in consecutive years Excessive sputum production: The cough is typically accompanied by the production of thick mucus or phlegm Shortness of breath: Breathlessness, particularly during physical activity, may occur as the condition progresses Fatigue: Reduced energy levels and general tiredness may be present Chest discomfort: Some individuals may experience chest tightness or a feeling of congestion How is Chronic Bronchitis Diagnosed

As we age, our metabolism slows, and, on average, men have faster metabolisms

Its encouraging to see that the rapid rise in vaping among young people seems to have stopped, especially since experts thought it might take years to slow it down, lead researcher Professor Sarah Durkin said