The only side effect is sometimes minor head pain.

该疗法唯一的副作用是有时伴有轻微头痛。

Children have reported head pain, fast heartbeats, feeling tired or weakened.

有报告称儿童出现头痛、心跳加快、感到疲倦或虚弱的现象。

It said they found that most side effects, such as head pain, were minor to moderate.

他们发现大多数副作用都只是轻度或中度，比如头痛。

Green tea is reported to improve mental ability, ease digestive problems and head pain, and help people with weight loss.

据报道，绿茶可以提高智力，缓解消化问题和头痛，并帮助人们减肥。

It said they found that most side effects, such as head pain, were minor to moderate. However, the treatment is relatively new.

报告指出，大多数副作用，如头痛，是轻微或中度的。然而，这种疗法相对较新。