Nicotine does cause blood vessels to constrict. For many that might not make much of a difference. For someone with vascular disease it may place them at an increased risk of developing complications. There are other people with a severe sensitivity to nicotine which results in restricted blood flow and frequently loss of limbs with any nicotine exposure, smoking or NRT of any sort. They are also typically extremely addicted, unable to stop nicotine use in any form, even in the face of amputation, which most folks would probably like to avoid (it's called thromboangeitis obliterans). So while nicotine itself may safely be used by many people it's not without risk. Plain fact. Then again, nothing is risk free, and each person must decide for themselves.
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The Buerger's disease or thromboangeitis obliterans
The Buerger's disease or thromboangeitis obliteransThe cause of this disease is unknown yet.
Buerger's disease or thromboangeitis obliterans
Seems to point toward Smoking rather than Nicotine Consumption.
Please note, Early age Smoking as well as other individual makeup may lead to the eventual condition.
This in no way indicts Nicotine in any different light than someone allergic to Shrimp.
* Did you know, if you have Cardiovascular disease, any exertion could be unhealthy?
One should choose to live an enjoyable life regardless of length.