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心脏外科医生表示,阳光与补充剂:维生素 D 的最佳来源

心脏外科医生表示,阳光与补充剂:维生素 D 的最佳来源


心脏外科医生表示,阳光与补充剂:维生素 D 的最佳来源

您的身体需要维生素 D。这种微量营养素对于构建和维持强壮的骨骼、牙齿和肌肉至关重要。但获得它的最佳方法是什么?每天晒太阳够吗?或者您需要服用补充剂来满足日常需求吗?在 Instagram 上分享的一段视频中,拥有超过 25 年临床经验、获得委员会认证的美国心血管外科医生杰里米·伦敦 (Jeremy London) 博士解释了两者之间的区别。 他还解释了每天获取足够维生素 D 的最佳方法是什么。保持警惕。

什么是维生素 D?

维生素D,也被称为阳光维生素,是一种脂溶性营养素,对于控制体内钙和磷的含量至关重要。这些营养素对于保持骨骼、牙齿和肌肉健康至关重要。据英国国家医疗服务体系称,它的缺乏会导致骨骼畸形,例如儿童佝偻病,以及导致成人骨痛的骨软化症。 当暴露在阳光下时,我们的身体可以自然产生维生素 D。 当皮肤暴露在紫外线 B (UVB) 射线下时,会产生维生素 D3,然后由肝脏和肾脏转化为活性形式。获取维生素 D 的另一种方法是通过饮食来源,例如多脂鱼、蛋黄和强化乳制品。补充剂是另一种方式。

阳光与补充剂

大多数人认为维生素 D 的最佳来源是阳光。这似乎是显而易见的:阳光是自然的、免费的,而且毕竟我们的身体是为了产生这种必需的营养素而设计的。逻辑似乎是正确的。然而,当你检查临床证据时,情况会变得比流行观点所暗示的更加微妙。然而,阳光和补充剂都提供相同的维生素。 “您的皮肤从阳光中产生的维生素 D 和补充剂中的维生素 D 是完全相同的分子。您的身体以相同的方式处理它们,”医生说。所以真正的问题是哪一个能够真正交付。根据心脏外科医生的说法,补充剂是最可靠的形式。 “研究很明确。口服维生素 D 比阳光照射更可靠地持续增加血液水平,”他说。医生继续说道,“在一项试验中,每天少量的剂量可以让大多数人在八周内进入健康范围,而下午暴露在阳光下 20 到 30 分钟的时间则更少。为什么?因为阳光暴露是不可预测的。这取决于你的纬度、季节、肤色、年龄、是否涂防晒霜以及暴露的皮肤数量。” 您的皮肤每天产生的维生素 D 量也有内在限制。 太阳是多变的。补码是准确的。”

底线

这是否意味着您应该仅依靠补充剂来获取维生素 D?杰里米·伦敦博士建议采用平衡的方法。花时间在阳光下。为什么? “它以补充剂无法提供的方式为您提供支持。但对于维生素 D,D3 和 K2 是更可靠的策略。生活方式是基础。有时,基础需要强化,”这位心脏病专家总结道。免责声明:本文仅供参考,不应被视为医疗建议。在开始或停止任何补充剂之前,请务必咨询合格的医疗保健专业人员。

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