There is an inverse relationship between smoking and the ability of an individual to perform exercise efficiently. Smoking affects this ability negatively in many ways.
Yes smoking is harmful to both athletes and non-athletes. Smoking kills. Please refer to the following article on the subject:
Onor, I. O., Stirling, D. L., Williams, S. R., Bediako, D., Borghol, A., Harris, M. B., ... & Sarpong, D. F. (2017). Clinical effects of cigarette smoking: epidemiologic impact and review of pharmacotherapy options. International journal of environmental research and public health, 14(10), 1147. https://pdfs.semanticscholar.org/1ff0/a62fe918183df20b07c1870d5279b7cdf3d3.pdf
Offcourse There is not 0.1% doubt that Smoking is Harmful for Atheletes and Non Atheletes (All Humans). “The amount of life expectancy lost for each pack of cigarettes smoked is 28 minutes, and the years of life expectancy a typical smoker loses is 25 years. Every cigarette a man smokes reduces his life by 11 minutes.
Is it possible to have a general definition of the Kanser and its causes and methods of treatment available and types with the availability of sources?
Yes, it has a great effect as the smoker athlete takes a deep amount of carbon monoxide, which is considered to enter the lungs and leaves black spots on the lung. The effects of cigarettes can be seen on the lungs in the form of black spots. Tar spots known by smokers who appear after chronic cough in the morning, cover the lungs and effectively lead to reduced respiratory ability to breathe air and absorb oxygen in the lungs. These effects lead to low tracer-lung tolerance of the trainee, and studies clearly show statistically significant differences between smokers and non-smokers.
Smoking influences people in different ways. Some people, however, including athletes and non-athletes may not be affected at all and the presupposed harms do not reduce the quality of their health and performance.
Professional athletes are commonly characterized as being strong and healthy; thus smoking is usually not thought of as significant issue in sports. However, considering the widespread tobacco use in the Middle East, athletes are also exposed to the unhealthy habit of smoking. T
Smoking and Increased Health Risks. Smokers are more likely than nonsmokers to develop heart disease, stroke, and lung cancer. Estimates show smoking increases therisk: For coronary heart disease by 2 to 4 times
The harmful effects established a long time ago for all humans. However, the "smoking lobby" gives out donations to sports clubs, etc who utterly depend on them. Therefore, smoking goes on and on killing innocent people. The situation is pathetic. Those studying its effects have a formula for each country: For instance for the UK, the number of deaths (of smokers) each year is predictable, about 100,000 people.