Experts Discuss Addiction Development, Cannabis Risk Threshold, and Early Smoking Signs

Experts explain that addiction often begins as a choice but can develop into a medical condition due to brain changes from repeated substance use, affecting impulse control and tolerance. A recent study suggests that cannabis addiction risk increases sharply when weekly THC intake exceeds 40 mg. Additionally, doctors note that smoking leaves subtle physical signs, such as changes in skin, nails, and breathing, which can indicate tobacco use before it is admitted.