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Symptoms include: Cough Light-headedness Irregular heartbeat (heart murmur) Fatigue Shortness of breath, particularly when you have been very active or when you lie down Pain or tightness in chest Irregular heart beating or very quick heartbeats The problem with mitral valve disease is that it can go unnoticed for a long period of time since many times the person does not show any symptoms of any sort

Consequently, it is harder to reverse addiction originating in this stage compared with later in life." [96] Adolescents are particularly susceptible to nicotine addiction: the majority (90%) of smokers start before the age of 18, a fact that has been utilized by tobacco companies for decades in their teen-targeted advertising, marketing and even product design

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4,5 Rhinovirus, influenza, and respiratory syncytial virus (RSV) are frequently detected in the respiratory tract of COPD patients