{"version":"1.0","provider_name":"USA Medical","provider_url":"https:\/\/usamedical.com\/en","title":"Vitamin B12: What It Does, Low B12 Signs, and Supplement Basics - USA Medical","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Bvlm7XcEFM\"><a href=\"https:\/\/usamedical.com\/en\/vitamin-b12-effects-deficiency-and-supplementation\/\">Vitamin B12: What It Does, Low B12 Signs, and Supplement Basics<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/usamedical.com\/en\/vitamin-b12-effects-deficiency-and-supplementation\/embed\/#?secret=Bvlm7XcEFM\" width=\"600\" height=\"338\" title=\"&#8220;Vitamin B12: What It Does, Low B12 Signs, and Supplement Basics&#8221; &#8212; USA Medical\" data-secret=\"Bvlm7XcEFM\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/usamedical.com\/en\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/usamedical.com\/en\/wp-content\/uploads\/2026\/02\/plant-4326.webp","thumbnail_width":826,"thumbnail_height":621,"description":"Vitamin B12 is an essential nutrient that the body cannot produce on its own, so it must be obtained through food or supplements. Vegetarians, pregnant and breastfeeding women, and anyone at risk of B12 deficiency should make sure they get enough of this vital vitamin. What do you need to know about B12? Let\u2019s find..."}