myths Medicine & Health

10 个科学问题 · 医学健康 Medicine & Health

本页目录

“每天必须喝满8杯水”有根据吗?

Is '8 glasses of water a day' well-founded?

饮水需求因人而异,与体型、活动量和气候相关。口渴感和浅色尿液是实用的判断信号,食物中也含不少水分,不必硬凑8杯。
Needs vary with size, activity and climate. Thirst and pale urine are practical guides, and food supplies much water—no need to force eight glasses.
难度 专业 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#饮水 #误区

“吃糖让孩子多动”有科学依据吗?

Is there proof that sugar makes kids hyperactive?

严格对照研究并未发现糖直接导致多动;家长的预期和聚会环境等更易造成“看起来更兴奋”的偏差。当然,限制添加糖对长期健康仍有必要。
Controlled studies don't show sugar directly causes hyperactivity; parental expectation and party settings bias the impression. Limiting added sugar is still wise for long-term health.
难度 专业 · 适合 小学高段(9-12) CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#糖 #误区

“鸡蛋升高胆固醇,不能吃”过时了吗?

Is 'eggs raise cholesterol, avoid them' outdated?

对多数人,膳食胆固醇对血液胆固醇影响有限,饱和脂肪影响更大。健康人群适量吃蛋通常是安全的,整体饮食模式更关键。
For most people, dietary cholesterol barely moves blood cholesterol; saturated fat matters more. Moderate egg intake is usually fine; the overall diet pattern counts most.
难度 专业 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#鸡蛋 #胆固醇

“发烧必须马上退烧”对吗?

Must we bring down a fever immediately?

低烧有助身体对抗感染,通常为了舒服才处理,而不是盯着数字。但若体温很高、持续不退,或婴儿发烧,应咨询医生。
Mild fever helps fight infection; we usually treat for comfort, not the number. Very high or persistent fever, or fever in an infant, warrants a doctor.
难度 进阶 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#发烧 #误区

“感冒时猛喝维生素C能治好”吗?

Does loading up on vitamin C cure a cold?

维生素C不能治愈感冒,若平时规律补充可能让病程略短。感冒主要靠休息和补水,抗生素对它无效。
Vitamin C can't cure a cold; regular use may shorten it slightly. Colds mainly need rest and fluids, and antibiotics don't work on them.
难度 进阶 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#维生素C #感冒

“掰指关节会导致关节炎”是真的吗?

Does cracking knuckles cause arthritis?

没有可靠证据把掰指关节和关节炎联系起来;那种声响是关节内气泡破裂,可能会吵到别人,但一般不伤关节。
No solid evidence links knuckle-cracking to arthritis; the sound is gas bubbles popping. It may annoy others but generally doesn't harm joints.
难度 入门 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#关节炎 #误区

“出汗多就等于排毒多”对吗?

Does sweating more mean detoxing more?

出汗的主要作用是降温,只能排出极少量代谢物;真正的解毒靠肝脏和肾脏。过度出汗反而有脱水风险。
Sweat mainly cools you and excretes only trace metabolites; real detox is the liver's and kidneys' job. Over-sweating risks dehydration instead.
难度 入门 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#出汗 #误区

“排毒”产品真的能排毒吗?

Do 'detox' products really remove toxins?

人体的肝脏和肾脏本就负责解毒,“排毒”产品大多缺乏证据且常非必需。均衡饮食、喝水和睡眠,比买产品更靠谱。
Your liver and kidneys already detox; 'detox' products mostly lack evidence and aren't needed. Balanced eating, water and sleep beat buying products.
难度 入门 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#排毒 #误区

“在暗处看书会弄坏眼睛”对吗?

Does reading in dim light ruin your eyes?

暗光下看书主要造成暂时的眼疲劳和不适,并不会造成永久性损伤。良好照明能减轻疲劳,但不用过度担心。
Dim light mainly causes temporary eye strain and discomfort, not permanent damage. Good lighting eases fatigue, but don't over-worry.
难度 入门 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#用眼 #误区

“抗生素能治一切发炎”对吗?

Do antibiotics cure all kinds of inflammation?

不对。抗生素只针对细菌感染;病毒性疾病和普通炎症并不需要,滥用会催生耐药菌。是否使用应由医生判断。
No. Antibiotics target bacteria only; viral illnesses and ordinary inflammation don't need them, and misuse breeds resistance. Let a doctor decide.
难度 入门 · 适合 大众 CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source

《默克家庭医学手册》Merck Manual Home Health Handbook 中译版,人民卫生出版社

The Merck Manual Home Health Handbook, Chinese ed., PMPH

#抗生素 #误区