▍原文 American tech entrepreneur Bryan Johnson, who is known for spending around US$2 million a year on longevity treatments, has revealed that he has been diagnosed with autoimmune gastritis, saying that "my stomach is eating itself." According to the Global Autoimmune Institute, autoimmune gastritis is a chronic autoimmune disease in which the body's immune system attacks the stomach lining. The condition is associated with an increased risk of gastric cancer if left untreated. ▍語言點 1. longevity treatment 長壽療法 ·longevity n. 長壽（健康長壽，延長無病壽命） ·longevity research 長壽研究 2. be diagnosed with something 被確診患有….. 3. autoimmune gastritis 自身免疫性胃炎（簡稱AIG） ·gastritis n. 胃炎 ·auto-是自己的，本身的 ·immune adj. 免疫的 4. chronic /ˈkrɑːnɪk/ adj. 慢性的，長期的 5. immune system 免疫系統 6. stomach lining 胃粘膜 ·lining n. （人體器官）內膜；衣服的里襯、內襯 7. be associated with 和……有關 8. gastric cancer 胃癌 9. if...