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学习笔记:认识维生素D

  • 2026-03-24 16:45:41
学习笔记:认识维生素D

维生素D包含维生素D3,维生素D2等,简单来说,所谓维生素D3,就是其他形式的维生素D在人体内转化而来的活性形式

活性维生素D3:不仅是骨骼健康需要,而且也是维持自身免疫正常所需。

最方便的维生素D来源是晒太阳,阳光中的一种紫外线可以在皮肤中转化为基础维生素D

另外,一些食物中也有少许:
蛋黄,蘑菇(特别是口蘑,含量较高)以及动物肝脏

不过,单纯依赖食物摄入往往难以满足身体每日所需维生素D,所以晒太阳是大多数人维生素D的主要来源。

说完了来源,接下来简略说说用途

1.骨骼健康的“黄金搭档”

众所周知,维生素D3与钙离子是维护骨骼健康的两大基石。
然而,其他形式的维生素D转化为活性维生素D3,需要镁离子辅助(镁离子是体内三百多种生化反应的催化剂)。
然后再由维生素K2把血液中游离的钙离子引导到骨骼,才能实现骨骼健康的目的。维生素D3,维生素K2与镁离子,以及钙离子,四位一体,构成了骨骼营养的“黄金组合”。

2.科学家最近发现,维生素D3还是自身免疫疾病的“守护者”

令人惊喜的是近年来的研究进展:维生素D3在自身免疫疾病的康复过程中,也展现出积极作用。

最新研究表明,当维生素D3与维生素K2、镁离子合理搭配,以每日5000IU的剂量(这属于较高剂量,需在专业人士指导下进行)使用,并配合每日摄入2.5升水时,在辅助改善自身免疫疾病方面显现出潜力,且未见明显副作用。

这无疑为许多与自身免疫疾病抗争的人,在药物治疗的同时,打开了一扇新的健康管理措施预防复发的窗口。

我们晒太阳的时候,,紫外线一直被视作皮肤变黑的“头号敌人”。但这里存在一个认知误区:
真正导致皮肤变黑的,其实是高温,当环境温度高于33摄氏度,皮肤细胞会启动自我保护机制——产生更多黑色素来抵御热损伤。

晒太阳的最佳时段:
上午9点之前,下午4点之后(如果自身免疫疾病需要更多量的维生素D,则在防止晒伤的前提下,选择每天上午9点到下午四点中间这段时间的阳光,能转化为基础维生素D的紫外线含量最佳。)
· 时长建议:每天约半小时
· 注意事项:
· 室内隔着玻璃晒太阳效果不佳(紫外线被阻挡,要打开窗户让阳光直接照到皮肤)
· 涂抹防晒霜会一并阻挡,阳光中能转化为基础维生素D的紫外线
· 避免高温时段长时间暴晒

我的健康管理思考

基于以上认知,我已将每日补充维生素D3纳入我的“健康管理措施的每日微小行为习惯”清单:
尽可能选择晒太阳作为补充维生素D来源
冬天或阴雨连绵的时候,可以暂时选择饮食营养素补充维生素D


健康,从来不是一蹴而就的大事,而是由无数个微小而正确的选择累积而成。愿我们都能在紧张忙碌的生活中,给自己的身体健康:多一点关注,多一点努力,多一分收获


---

温馨提示:本文分享的是个人学习笔记,不构成医疗建议。如需选择大剂量维生素D3补充剂,请务必咨询专业医生,让医生根据个人情况进行评估和指导。

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  1. CONNECT:[ UseTime:0.000977s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001368s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.020855s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000717s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001472s ]
  6. SELECT * FROM `set` [ RunTime:0.000630s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001398s ]
  8. SELECT * FROM `article` WHERE `id` = 475026 LIMIT 1 [ RunTime:0.000911s ]
  9. UPDATE `article` SET `lasttime` = 1774473362 WHERE `id` = 475026 [ RunTime:0.028533s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000725s ]
  11. SELECT * FROM `article` WHERE `id` < 475026 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001152s ]
  12. SELECT * FROM `article` WHERE `id` > 475026 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000929s ]
  13. SELECT * FROM `article` WHERE `id` < 475026 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003819s ]
  14. SELECT * FROM `article` WHERE `id` < 475026 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003174s ]
  15. SELECT * FROM `article` WHERE `id` < 475026 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005180s ]
0.235924s