We already know that, in general, it makes sense to first check if a deficiency actually exists before taking a supplement. The \u201cshower\u201d principle (\u201cI take everything my favorite health influencers recommend\u201d) may be easy to follow, but it can backfire. Because with some micronutrients (and other supplements), excess can actually be harmful. This applies especially to fat-soluble vitamins and trace elements. <\/p>\n\n\n\n
Today we're talking about the exceptions to the \u201ctest first, then supplement\u201d rule: not all essential nutrients need to be measured in blood before taking them<\/strong>. In some cases, the benefits are clear even without lab tests, the risks are manageable, and deficiency is not unlikely<\/strong>. But be careful: we're not saying everyone should supplement these compounds \u2014 it's an individual decision, and this article aims to help guide you.<\/p>\n\n\n\n And: \u201ctaking it without further testing\u201d doesn't mean \u201cconsuming it blindly.\u201d That's why you'll find here a nuanced list of ten micronutrients you can typically start with even without lab analysis, in some cases with notes on when it would make sense to investigate further.<\/p>\n\n\n\n Magnesium is involved in over 300 enzymatic reactions: from muscle relaxation to energy production and stress regulation. The need increases with exercise, stress, caffeine, or certain medications (e.g., proton pump inhibitors).<\/p>\n\n\n\n Experts assume there is a widespread deficiency.<\/p>\n\n\n\n The different forms of magnesium deserve their own article, but citrate, malate, and bisglycinate are usually reasonable options. The NRV (nutrient reference value) is 375 mg daily.<\/p>\n\n\n\n Two nuances: to reach 375 mg of elemental magnesium, you often need more than 3 grams of the compound depending on the form. And with stress or exercise, the need is likely higher.<\/p>\n\n\n\n In any case: 300 mg daily as a supplement usually doesn't cause problems.<\/p>\n\n\n\n The most common is acute diarrhea. If it occurs, it's best to switch to bisglycinate, malate, or taurate.<\/p>\n\n\n\n Serum magnesium is unreliable because most of it is inside cells. For greater accuracy, a whole blood mineral analysis is used.<\/p>\n\n\n\n It's essential for the immune system, skin, connective tissue, and as an antioxidant. Needs increase with physical stress, infections, injuries, or inflammation.<\/p>\n\n\n\n The NRV is 80 mg, although there is much debate. Linus Pauling took up to 18 g daily. Supplementation of 200\u2013500 mg daily is usually considered reasonable; during infections or recovery, more could be useful.<\/p>\n\n\n\n Important: do not combine with selenium.<\/p>\n\n\n\n High doses can cause diarrhea and, in susceptible people, increase the risk of kidney stones.<\/p>\n\n\n\n The sample must be handled quickly and protected from light; ideally, it is analyzed directly in the lab.<\/p>\n\n\n\n It increases the production of glutathione, one of the body's most important antioxidants. It's useful for oxidative stress, pollution, or chronic inflammation.<\/p>\n\n\n\n It also acts as a classic mucolytic and can protect against pollutant particles.<\/p>\n\n\n\n Typical dose: 600 mg one to three times a day.<\/p>\n\n\n\n Very high doses can cause nausea, vomiting, or diarrhea. Caution in asthma or sulfur intolerance.<\/p>\n\n\n\n Glycine is a key amino acid in connective tissue and has a calming effect on the nervous system. It can improve skin, joints, regeneration, and sleep.<\/p>\n\n\n\n Typical dose: 3\u201310 g daily.<\/p>\n\n\n\n Very high doses can cause gastrointestinal discomfort.<\/p>\n\n\n\n It provides essential amino acids in optimal proportions, with high bioavailability. Useful in sports, aging, or low-protein diets.<\/p>\n\n\n\n Dose: 5\u201310 g daily or according to protein requirements.<\/p>\n\n\n\n Practically harmless, except for the cost.<\/p>\n\n\n\n Key for energy, nervous system, and metabolism. Useful in stress, sports, alcohol, vegan diets, or pregnancy.<\/p>\n\n\n\n Important to use active forms.<\/p>\n\n\n\n Generally excreted in urine, except B6 in prolonged high doses.<\/p>\n\n\n\n Precursor to acetylcholine and essential for the liver. Relevant in vegan diets or high cognitive demand.<\/p>\n\n\n\n Recommended forms: alpha-GPC, CDP-choline, or phosphatidylcholine.<\/p>\n\n\n\n Can cause \u201cfishy\u201d body odor and digestive or cardiovascular effects.<\/p>\n\n\n\n Fundamental for cellular energy production. Decreases with age.<\/p>\n\n\n\n Important for people taking statins.<\/p>\n\n\n\n Dose: 100\u2013200 mg daily.<\/p>\n\n\n\n Can cause insomnia or digestive discomfort at high doses.<\/p>\n\n\n\n Improves strength, recovery, and cognitive function, especially in older adults or vegetarians.<\/p>\n\n\n\n Dose: 5 g daily.<\/p>\n\n\n\n Generally safe; may cause water retention or mild digestive discomfort.<\/p>\n\n\n\n Regulates cell volume, cardiovascular and nervous system. Interesting in stress, sports, or plant-based diets.<\/p>\n\n\n\n Dose: 500 mg \u2013 10 g daily.<\/p>\n\n\n\n Very well tolerated in general.<\/p>\n\n\n\n Important, but elevated levels require calcium control.<\/p>\n\n\n\n Optimal index: 8\u201311%. Excess potentially problematic.<\/p>\n\n\n\n Narrow margin between deficiency and toxicity.<\/p>\n\n\n\n Critical for thyroid; excess can worsen thyroid dysfunction.<\/p>","protected":false},"excerpt":{"rendered":" Ya sabemos que, en general, tiene sentido comprobar primero si realmente existe una deficiencia antes de tomar un suplemento. El principio de la \u201cregadera\u201d (\u201ctomo todo lo que recomiendan mis influencers de salud favoritos\u201d) puede ser f\u00e1cil de seguir, pero puede salir mal. Porque con algunos micronutrientes (y otros suplementos), el exceso puede ser realmente […]<\/p>\n","protected":false},"author":1,"featured_media":6325,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,93],"tags":[],"class_list":["post-6324","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nutricion","category-suplementos"],"yoast_head":"\nMagnesium \u2013 the underestimated all-rounder<\/h2>\n\n\n\n
Why consider supplementing it?<\/h3>\n\n\n\n
What happens in case of excess?<\/h3>\n\n\n\n
What if I want to measure it?<\/h3>\n\n\n\n
Vitamin C \u2013 the classic water-soluble vitamin<\/h2>\n\n\n\n
Why consider supplementing it?<\/h3>\n\n\n\n
What happens in case of excess?<\/h3>\n\n\n\n
What if I want to measure it?<\/h3>\n\n\n\n
NAC (N-acetylcysteine) \u2013 cellular protection and mucolytic<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
What happens in case of excess?<\/h3>\n\n\n\n
Glycine or collagen \u2013 joints, sleep, and structure<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
Excess?<\/h3>\n\n\n\n
EAA (essential amino acid pattern) \u2013 efficient protein<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
Excess?<\/h3>\n\n\n\n
B-complex \u2013 underestimated energy<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
Excess?<\/h3>\n\n\n\n
Choline \u2013 brain and liver function<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
Excess?<\/h3>\n\n\n\n
Coenzyme Q10 \u2013 mitochondrial catalyst<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
Excess?<\/h3>\n\n\n\n
Creatine \u2013 muscle and brain<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
Excess?<\/h3>\n\n\n\n
Taurine \u2013 cellular protector<\/h2>\n\n\n\n
Why consider it?<\/h3>\n\n\n\n
Excess?<\/h3>\n\n\n\n
Micronutrients you probably need more of\u2026 but should measure first<\/h1>\n\n\n\n
Vitamin D<\/h2>\n\n\n\n
Omega-3<\/h2>\n\n\n\n
Selenium<\/h2>\n\n\n\n
Iodine<\/h2>\n\n\n\n