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[味觉随年龄变迁的奥秘:从生理机制到心理重塑]-[Why do our tastes change with age?]

Do you really know? · B1 · 2026-04-20

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📋 Summary

味觉随年龄变迁的奥秘:从生理机制到心理重塑

你是否曾长期回避某种食物,自认为对其深恶痛绝,却在某次尝试后恍然大悟,发现其实美味可口?这种经历并非个例。正如播客中所言:"Have you ever avoided a type of food for a long time, assuming you hated it, only to try it out and then end up having something of a revelation?"许多人童年时对西兰花、抱子甘蓝或菠菜等蔬菜避之不及,成年后却欣然接受。这背后揭示了一个普遍规律:我们的口味会随着年龄增长而发生显著变化。

大脑与感官的协同作用

决定我们是否喜欢某种食物的,绝非仅仅是味蕾。播客明确指出:"It's not just down to our taste buds. The brain has an important role too."当我们进食时,大脑会整合风味、气味、质地、温度,乃至记忆与情绪等多重信息,最终决定是否继续享用。味觉本质上是一种多感官体验,涉及全部五种感官。一个有趣的验证方法是捏住鼻子品尝不喜欢的食物,此时"flavour is completely altered",因为嗅觉对风味的感知至关重要。

人类味蕾能识别五种基本味道:甜、咸、酸、苦和鲜味(umami)。其中,"umami"由日本研究者 Kikunai Akida 于 1908 年提出,意为“美味”或“鲜味”,常见于成熟番茄、帕尔马干酪和蘑菇中,能增强其他风味并赋予食物丰富的层次感。

儿童为何更挑剔?

儿童对某些食物尤其是苦味蔬菜的排斥,有其生理基础。播客解释道:"kids have more taste buds than adults, which make them especially sensitive to flavours, particularly bitterness."这意味着孩子对味道的敏感度更高,更容易被苦味劝退。营养学家指出,味觉在五岁前迅速发展,因此早期是引入多样风味的关键窗口期,需通过反复接触来建立接受度。

年龄带来的味觉演变

随着成长,多种因素共同塑造了味觉的变化。首先,激素水平如雌激素和雄激素逐渐下降,导致对风味的敏感度降低。其次,嗅觉能力随年龄减弱,而嗅觉与味觉紧密相连,进一步影响整体风味感知。此外,药物使用、吸烟及某些健康状况也会改变食物味道。值得注意的是,许多老年人因感觉食物“less flavorful"而增加盐或糖的摄入,这可能加剧高血压或糖尿病等健康问题。

重新尝试的价值

重要的是,人生不同阶段对同一食物的喜好完全可能逆转。播客引用美国农业部与卫生部的研究指出:"it can take between eight and 10 attempts before we start to appreciate a particular food."大脑具有学习与适应能力,能够建立新的积极联想。儿时因烹饪不当而讨厌的食物,在成年后以不同方式呈现时,或许会成为心头好。

因此,不妨给曾经拒绝的食物第二次机会。味觉不是固定不变的标签,而是动态发展的感知系统。理解这一点,不仅能拓宽饮食选择,更能帮助我们更健康地面对老龄化过程中的感官变化。

🎯Key Sentences

1
The chances are there's at least one.
很有可能至少有一个。
2
it's actually perfectly normal.
这其实完全正常。
3
Well, it's not just down to our taste buds.
嗯,这不仅仅取决于我们的味蕾。
4
take note.
请注意。
5
You can test it yourself.
你可以亲自测试一下。
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📝Key Phrases

1
end up having something of a revelation
最终有了一种顿悟
2
wouldn't go near
避之不及
3
it's not just down to
这不仅仅取决于
4
go back for another mouthful
再吃一口
5
take note
请记下来
展开全部

📖 Transcript

Why do our tastes change with age?
Thanks for asking!
Have you ever avoided a type of food for a long time, assuming you hated it, only to try it out and then end up having something of a revelation?
Think back to when you were a kid and there was a type of vegetable you simply wouldn't go near, let alone eat.
The chances are there's at least one.
It might have been broccoli, Brussels sprouts or spinach, for example.

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