哈佛 T.H. Chan 公衛學院追蹤逾 20 萬人、近 40 年（發表於 The BMJ，2025），發現每週三份薯條與第二型糖尿病風險高出約 20% 相關；但同分量的烤、煮、搗馬鈴薯未見顯著關聯。
把每週三份薯條換成全穀，風險估計可降約 19%；但換成白飯反而與較高風險相關——關鍵是換對東西，不是單純少吃。
※ 這是觀察性研究，呈現的是「相關」而非因果（愛吃薯條的人也可能有其他習慣差異）；研究中一份薯條約 4–6 盎司（中大份速食薯條）。本片為科學新聞整理，非醫療或營養建議，個人飲食請諮詢專業。
資料來源：The BMJ／哈佛 T.H. Chan 公衛學院（2025）。
#健康 #飲食 #糖尿病 #薯條 #科學新聞
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