What condition is NOT a serious risk of using ephedra?

The use of ephedra, particularly in high doses or for prolonged periods, is associated with several serious health risks due to its stimulant properties. Among the conditions listed, hair loss is not typically considered a serious risk associated with ephedra use. While hair loss can occur for various reasons, including hormonal changes or nutritional deficiencies, it is not directly linked to the acute and severe cardiovascular and neurological risks posed by ephedra.

In contrast, conditions such as stroke, seizures, and arrhythmias represent significant health threats. Stroke can occur due to elevated blood pressure and increased heart rate, both of which may be exacerbated by ephedra. Seizures can result from overstimulation of the nervous system, and arrhythmias are irregular heartbeats that can lead to serious cardiac events. These conditions highlight the potential dangers of using ephedra, making hair loss a far less concerning issue in comparison.