Recent research has also shown that indulging in a high-fat and high-sugar diet may have negative effects on your brain, causing learning and memory deficits.
2019年12月六級真題（第一套）閱讀 Section A
柯林斯高階英漢雙解學習詞典釋義
VERB
(使自己)沉迷;放縱(自己)
If you indulge in something or if you indulge yourself, you allow yourself to have or do something that you know you will enjoy.