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The lower percentage inhibition of DPPH radicals in the smoke-exposed old age group compared to the young age group may be explained by the possibility that the antioxidant ability may decrease with advancing age

Yohannes Tesfaigzi, a senior scientist at the Lovelace Respiratory Research Institute in New Mexico, says for those with susceptible lungs, even very low levels of smoke exposure can result in an emergency room visit, and lasting long-term effects