{"id":31809,"date":"2026-06-20T07:46:45","date_gmt":"2026-06-20T11:46:45","guid":{"rendered":"https:\/\/vitacru.com\/?p=31809"},"modified":"2026-08-13T07:29:04","modified_gmt":"2026-08-13T11:29:04","slug":"sun-vitamin","status":"publish","type":"post","link":"https:\/\/vitacru.com\/en\/sante-globale\/vitamine-soleil\/","title":{"rendered":"Vitamin D: The Sun Hormone and the Invisible Deficiency"},"content":{"rendered":"

Sunshine Vitamins: Understanding D3, K2, and the Hormone Your Body Craves<\/h2><\/div>\n\n\n\n

<\/p>\n\n\n\n

The human body is intimately linked to light. When the sun touches your skin, a veritable biochemical reaction is triggered: your body makes vitamin D, a substance essential for its balance.<\/p>\n\n\n\n

In Quebec, the problem is simple: for almost eight months of the year, the sun is too low to allow for sufficient vitamin D production. As a result, a large portion of the population has insufficient levels, often without knowing it.<\/p>\n\n\n\n

From time immemorial, humans have intuitively understood the importance of the sun. The Greeks practiced heliotherapysunbathing<\/em>Nordic peoples consumed cod liver oil to get through the winter, and early 20th-century sanatoriums relied on light baths. Today, science confirms what traditions already knew: light is essential for health.<\/p>\n\n\n\n

Eight Months Without Sun: The Quebec Reality<\/h3><\/div>\n\n\n\n

To understand why so many Quebecers are deficient in vitamin D, we must first understand how the body produces it. And that's where geography becomes a health issue.<\/p>\n\n\n\n

\"La<\/figure><\/div>\n\n\n\n

Your skin has a remarkable ability. When the sun's UVB rays touch it directly, it transforms a form of cholesterol present in its cells, 7-dehydrocholesterol, into vitamin D. This is a natural and extremely efficient process. But it depends on one essential condition: the sun must be high enough in the sky for UVB rays to reach the Earth's surface without being filtered by the ozone layer.<\/p>\n\n\n\n

Researchers summarize this reality with a simple rule: if your shadow is longer than you are tall, vitamin D production becomes almost nil, no matter how much time you spend outdoors. This is the \u00abshadow rule,\u00bb popularized by Dr. Michael Holick, a biochemist at Boston University and a recognized expert on vitamin D.<\/p>\n\n\n\n

At our latitude of approximately 45 degrees north, this optimal window extends mainly from late April to late August, primarily between 10 a.m. and 3 p.m. The rest of the year, the skin produces very little vitamin D. For nearly two-thirds of the year, our bodies are therefore deprived of their main natural source. Even in the summer, several factors reduce this ability. Sunscreen with an SPF of 15 or higher can block up to 95% of vitamin D synthesis. <\/p>\n\n\n\n

Dressing in clothes, tinted windows, and indoor work also limit UVB exposure. Darker skin, rich in melanin, also produces less vitamin D for the same exposure. And with age, this capacity significantly decreases: at 70 years old, one produces about four times less than at 20 years old.<\/p>\n\n\n\n

In addition, there is another rarely discussed problem. In Quebec, blood tests generally consider a concentration between 75 and 250 nmol\/L of 25-hydroxyvitamin D, the form measured in the blood, to be \u00abnormal.\u00bb The threshold used by Statistics Canada<\/a> is even set at 50 nmol\/L, below which about one-third of Canadians fall.<\/p>\n\n\n\n

Furthermore, several researchers, including Dr. Holick, believe that these thresholds remain far from optimal levels. In some populations who traditionally live in the sun, such as the Maasai in Tanzania, natural concentrations are rather between 100 and 150 nmol\/L. It is therefore possible to be \u00abwithin the norm\u00bb on paper while remaining biologically deficient. This is called subclinical deficiency: a discreet deficiency, but sufficient to disrupt many bodily functions.<\/p>\n\n\n\n

Vitamin D isn't really a vitamin<\/h3><\/div>\n\n\n\n

Here's something that changes everything once you understand it: Vitamin D is poorly named. It was called a \u00abvitamin\u00bb at the beginning of the 20th century, a time when all essential substances discovered in food were grouped under this term. But over time, a reality became apparent: vitamin D functions much more like a hormone.<\/p>\n\n\n\n

Your body makes it itself from cholesterol and sunlight. The liver and kidneys then activate it in several steps, just like other hormones such as cortisol, testosterone, or estrogen. It circulates in the blood and binds to specialized receptors found in almost all human tissues.<\/p>\n\n\n\n

Researchers have identified these receptors, known as VDRs (vitamin D receptors), in the brain, the immune system, the muscles, the intestines, the skin, and the reproductive organs. More than 2,000 genes respond to vitamin D, accounting for about 10 % of your genetic code. It\u2019s as if it were adjusting the settings of 2,000 biological switches all at once. When vitamin D is lacking, it\u2019s not just a single system that slows down\u2014the entire biological balance is disrupted. Fatigue, a weakened immune system, mood disorders, inflammation, and sleep disturbances then become much more common.<\/p>\n\n\n\n

Ancient traditions already presented this link between light and vitality. In Ayurvedic medicine, the sun represents a source of prana, the vital energy. In Chinese medicine, it nourishes yang, the active energy of the body. The Bible itself evokes the sun as a source of direct healing: \u00abBut for you who fear my name, the sun of righteousness will rise with healing in its wings,\u00bb wrote the prophet Malachi (Malachi 4:2), millennia before science measured UVB rays. <\/p>\n\n\n\n

The Nordic peoples, on the other hand, had developed the reflex of consuming cod liver oil to get through the long winters. They weren't talking about hormones yet, but they had understood that a life deprived of light profoundly weakened the body.<\/p>\n\n\n\n

What she really does to your body<\/h3><\/div>\n\n\n\n

For a long time, vitamin D was reduced to a matter of bones. It's true that it plays a central role in skeletal strength, and it has helped prevent rickets in generations of children. But this view is now far too limited. Vitamin D influences almost all major bodily systems.<\/p>\n\n\n\n

\n
<\/path><\/svg><\/span>Your intelligent immune system<\/strong><\/span><\/div>\n<\/div><\/div>\n\n\n\n

This is probably one of its most impressive roles. Vitamin D does more than just boost immunity: it helps to regulate it. It strengthens the first line of defense by activating the production of natural antibiotics, such as cathelicidin, which can help neutralize viruses and bacteria. At the same time, it helps to calm excessive immune reactions involved in several autoimmune diseases.<\/p>\n\n\n\n

This is also one of the reasons why colds, flu, and bronchitis are more common in winter: vitamin D levels are at their lowest then.<\/p>\n\n\n\n

\n
<\/path><\/svg><\/span>Your hormonal balance ally<\/strong><\/span><\/div>\n<\/div><\/div>\n\n\n\n

Vitamin D acts as a hormonal coordinator. In women, it supports ovarian function, the menstrual cycle, and fertility. In men, it participates in testosterone production. It also interacts with the thyroid, adrenal glands, and insulin, linking several hormonal systems together.<\/p>\n\n\n\n

\n
<\/path><\/svg><\/span>Your mood and your brain<\/strong><\/strong><\/span><\/div>\n<\/div><\/div>\n\n\n\n

The brain has a high density of vitamin D receptors, particularly in areas related to mood. It participates in the production of serotonin and dopamine, two neurotransmitters essential for motivation, sleep, and emotional balance.<\/p>\n\n\n\n

When levels drop during the fall and winter, the brain loses important support for its chemical balance. This is one of the mechanisms involved in seasonal depression.<\/p>\n\n\n\n

\n
<\/path><\/svg><\/span>Your inflammation regulator<\/strong><\/strong><\/span><\/div>\n<\/div><\/div>\n\n\n\n

Low-grade chronic inflammation is associated with several modern diseases. Vitamin D helps regulate this inflammatory response by modulating cytokines, the chemical messengers of inflammation. When levels are low, the body tends to remain in a prolonged inflammatory state.<\/p>\n\n\n\n

\n
<\/path><\/svg><\/span>Cellular protection<\/strong><\/strong><\/strong><\/span><\/div>\n<\/div><\/div>\n\n\n\n

Vitamin D also participates in the regulation of cell development and renewal. This is why several research teams, including those of Dr. Michael Holick and Dr. Carole Baggerly (GrassrootsHealth), are interested in its preventive role in overall health.<\/p>\n\n\n\n

\n
<\/path><\/svg><\/span>Your bones and your muscles, obviously<\/strong><\/span><\/div>\n<\/div><\/div>\n\n\n\n

Its classic role remains essential: vitamin D improves the absorption of calcium and phosphorus, which are vital for bone strength. It also supports muscle function. A deficiency can lead to weakness, widespread pain, loss of balance, or a feeling of heavy legs.<\/p>\n\n\n\n

When you put it all together, you understand why this hormone influences so many systems at once: immunity, hormones, mood, inflammation, muscles, and overall vitality. It's not just another vitamin in a routine. It's a true biological foundation, especially important in our Nordic climate.<\/p>\n\n\n\n

The Synergistic Quartet: Why Vitamin D Never Works Alone<\/h3><\/div>\n\n\n\n

Here's something few people know: Vitamin D doesn't work alone. It needs three essential cofactors to function properly. Their absence explains both why some supplements seem ineffective and why there's sometimes talk of \u00abvitamin D toxicity.\u00bb.<\/p>\n\n\n\n

Let's set the record straight: it's not vitamin D that's the problem. It's isolated vitamin D, without its orchestra.<\/p>\n\n\n\n

Magnesium: Without it, your Vitamin D won't activate properly<\/strong><\/p>\n\n\n\n

\"magnesium<\/a><\/figure><\/div>\n\n\n\n

Vitamin D, whether from the sun or a supplement, is first a raw material. It must be activated in two steps, in the liver and then in the kidneys. These steps depend on magnesium.<\/p>\n\n\n\n

Without it, vitamin D remains partially inactive. Worse still, supplementation can increase magnesium requirements. Cramps, palpitations, anxiety, or sleep disturbances after starting supplementation are not necessarily linked to vitamin D itself, but often to an exacerbated magnesium deficiency.<\/p>\n\n\n\n

Vitamin K2: The Calcium Regulator<\/strong><\/p>\n\n\n\n

When vitamin D is increased, calcium absorption also increases. Without adequate direction, this calcium can deposit in soft tissues (arteries, kidneys, joints). It is this calcification, not vitamin D itself, that is at the heart of certain concerns.<\/p>\n\n\n\n

Vitamin K2, particularly in the MK-7 form, directs calcium to the bones and teeth. It thus reduces the risk of poor distribution. It can be found in traditional cheeses, pasture butter, free-range egg yolks, and organ meats. Modern diets contain very little of it.<\/p>\n\n\n\n

Vitamin A: The Natural Balance<\/strong><\/p>\n\n\n\n

Vitamins A and D are two fat-soluble hormones that modulate each other. When their balance is maintained, as found naturally in cod liver oil or animal liver, their effects are optimized and their potential imbalances are reduced. This is partly why ancestral peoples who consumed these foods seemed much less exposed to problems sometimes associated with modern isolated supplementation.<\/p>\n\n\n\n

Why high doses can be tolerated<\/strong><\/p>\n\n\n\n

When the quartet is in place, your body uses vitamin D comparably to how it produces it under the sun. This allows certain high-dose protocols, such as that of Dr. Cicero Galli Coimbra in Brazil for autoimmune diseases, to use amounts that conventional medicine would consider high, with reduced risk when cofactors are present and adequate monitoring is ensured.<\/p>\n\n\n\n

Nature never delivers a nutrient in isolation. Sunlight, fish liver oils, pasture-raised egg yolks, or butter from grass-fed cows simultaneously provide vitamin D, vitamin A, magnesium, and K2 precursors. It is modern isolation that has created imbalances, not the vitamin itself. When we return to the logic of the living, balance tends to restore itself naturally.<\/p>\n\n\n\n

The sun: the original source we learned to fear<\/h3><\/div>\n\n\n\n

This logic of life begins with the sun. And yet, here is a troubling paradox of our time: we have been taught to flee from it so much that many people are afraid of it. High SPF sunscreen as soon as we set foot outside, covering clothing, constant search for shade, warnings against the slightest ray. The result: an entire generation lives with a chronic vitamin D deficiency, while skin cancer rates have not decreased proportionally.<\/p>\n\n\n\n

The sun isn't your enemy. Sunburn is. The distinction is essential.<\/p>\n\n\n\n

Your skin is designed to receive light. Moderate, regular, and gradual exposure is one of the most beneficial things you can offer it. According to the work of Dr. Holick, significant body exposure to the midday summer sun, up to a slight redness, can produce between 10,000 and 25,000 IU of vitamin D in a single session.<\/p>\n\n\n\n

For more moderate exposure (arms, legs, and face for 15 to 30 minutes), we're talking more about 3,000 to 5,000 IU. This is already several times the officially recommended dose, freely available, and with all-natural cofactors.<\/p>\n\n\n\n

Fascinating fact: skin has a self-regulation mechanism. Once enough vitamin D has been produced, synthesis automatically stops, even if exposure continues. Therefore, the risk of overproduction by the skin is zero.<\/p>\n\n\n\n

Understanding what happens when you get sunburned<\/strong><\/p>\n\n\n\n

Sunburn is not just a superficial burn; it's also an inflammatory reaction. UV rays damage the DNA of skin cells, and the body triggers an immune response to repair the affected tissues. This inflammation causes redness, heat, pain, and, a few days later, peeling.<\/p>\n\n\n\n

Sun sensitivity doesn't just depend on skin type. An inflammatory condition, a congested liver, or an acidifying diet can make skin more reactive. Conversely, skin supported by a healthier system, rich in fresh antioxidants (carotenoids, omega-3s, polyphenols), generally tolerates UV rays better. This is why traditional naturopathy recommended preparing the skin before periods of prolonged exposure: liver cures, raw and colorful food, and good hydration.<\/p>\n\n\n\n

An old popular trick to know: spray the skin with a mixture of water and diluted apple cider vinegar, before or after exposure, to restore its natural pH and soothe inflammation.<\/p>\n\n\n\n

Tanning, on the other hand, is a protective mechanism. The skin produces melanin to absorb some of the UV rays. This is why gradual exposure is important, giving the skin time to develop its natural defenses.<\/p>\n\n\n\n

A few simple principles for enjoying the sun responsibly<\/strong><\/p>\n\n\n\n

Expose yourself gradually.<\/strong> At the beginning of your exposure, start with 10 to 15 minutes per day, then gradually increase. Your skin needs time to adapt and produce its own protective pigment, melanin.<\/p>\n\n\n\n

Aim for the comfort zone.<\/strong> Go out before your skin turns red. Redness is the signal that you've exceeded the useful dose. The rule is to leave the sun before your skin changes color.<\/p>\n\n\n\n

Favor times when the sun is high.<\/strong> Between 10 a.m. and 3 p.m., synthesis is maximal. This is the opposite of what we were taught, but it's the biochemical reality.<\/p>\n\n\n\n

Maximize the exposed surface area.<\/strong> The more your skin is exposed to light, the more efficient the synthesis is. A few minutes in shorts and a tank top are worth much more than an hour fully covered.<\/p>\n\n\n\n

Do not immediately soap the exposed skin.<\/strong> Vitamin D synthesized on the skin surface takes approximately 24 hours to be absorbed. Harsh soap immediately after exposure can significantly reduce absorption.<\/p>\n\n\n\n

Once the useful exposure window is over, you can cover up, apply a natural sunscreen (mineral-based, like zinc oxide, without chemical filters), or simply seek shade. The goal isn't to bake in the sun. It's to re-establish a healthy relationship with it.<\/p>\n\n\n\n

When the sun isn't enough: smart supplementation<\/h3><\/div>\n\n\n\n

In Quebec, even by exposing your skin religiously all summer, you don't produce enough vitamin D to get through the eight months of low sunlight. Supplementation then becomes a necessity rather than a luxury. But not all forms are created equal, and the quality of the source really matters.<\/p>\n\n\n\n

D2 versus D3: Do not confuse<\/strong><\/p>\n\n\n\n

There are two main forms of vitamin D: D2 (ergocalciferol), of plant origin, and D3 (cholecalciferol), which is the same as what the skin produces in the sun. D3 is better absorbed, more stable in the blood, and more effective at raising vitamin D levels. If you choose a supplement, favor D3.<\/p>\n\n\n\n

The food sources that really matter<\/strong><\/p>\n\n\n\n

\"huile<\/a><\/figure><\/div>\n\n\n\n

Modern diets are low in vitamin D, but some sources remain valuable: cod liver oil, wild fatty fish (salmon, sardines, herring, mackerel), free-range egg yolks, animal liver, and sun-exposed mushrooms. These also contain vitamin D, in more modest but significant amounts when consumed regularly.<\/p>\n\n\n\n

Traditional cod liver oils remain particularly interesting because they naturally provide vitamin D, vitamin A, and omega-3s in their original balance. Several quality brands exist today, such as Rosita, which offers a cold-extracted, unrefined oil from wild Norwegian cod. It's a return to what our great-grandmothers instinctively gave their children every autumn.<\/p>\n\n\n\n

The naturopathic principle: never isolate<\/strong><\/p>\n\n\n\n

Vitamin D rarely acts alone. Ideally, D3 supplementation should also be accompanied by vitamin K2 (MK-7) and sufficient magnesium intake. Several brands now offer D3-K2 combinations<\/a>, which simplifies choices. As for vitamin A, it is generally preferable in food form (liver, egg yolks, raw butter, cod liver oil) rather than as an isolated supplement, where it can become excessive.<\/p>\n\n\n\n

The goal is not to replace the sun or a healthy lifestyle with a pill, but to use supplementation as intelligent support for reasonable sun exposure and a vibrant diet.<\/p>\n\n\n\n

How much to take?<\/strong><\/p>\n\n\n\n

Health Canada's official recommendations (600 to 800 IU per day) primarily aim to prevent severe deficiencies, not necessarily to achieve an optimal level. Several researchers and clinicians in functional medicine, including Dr. Holick, believe that a healthy adult often needs 2,000 to 5,000 IU per day, especially at our latitude and during the sunless months. Many naturopaths recommend 5,000 IU or more for adults who spend most of their time indoors, for the elderly, or for women in perimenopause.<\/p>\n\n\n\n

A 25-hydroxyvitamin D blood test can offer a starting point, but it has limitations. It measures the storage form of vitamin D, without necessarily reflecting its actual activity in cells or the status of essential cofactors like magnesium, K2, or vitamin A.<\/p>\n\n\n\n

This is why several naturopathic approaches also favor listening to the body's signals and adapting supplementation to lifestyle, sun exposure, and overall health context. When in doubt, or in the presence of chronic or autoimmune conditions, professional guidance becomes essential.<\/p>\n\n\n\n

The signals your body sends you<\/h3><\/div>\n\n\n\n

The symptoms of vitamin D deficiency are so common that we end up normalizing them. We attribute them to age, stress, or fatigue. However, when several of these signs appear together, especially after long months without sufficient sun exposure, it becomes relevant to question your vitamin D level.<\/p>\n\n\n\n

Persistent fatigue despite rest. Frequent respiratory infections, lingering colds, recurring seasonal flu. Low mood, winter blues, irritability, lack of motivation. Diffuse muscle pain, morning stiffness, leg weakness. Bone loss, dull aches, easier fractures. Slow healing, unusual hair loss, general feeling of reduced recovery.<\/p>\n\n\n\n

On their own, none of these symptoms directly point to vitamin D. But together, they often tell the same story: that of a body lacking its \u00absun hormone.\u00bb And the good news is that it's also one of the easiest deficiencies to correct.<\/p>\n\n\n\n

Find the sunshine hormone<\/h3><\/div>\n\n\n\n

Vitamin D perfectly illustrates a fundamental principle of naturopathy: whatever nourishes the body nourishes health. The sun is not an enemy to be avoided, but a nutrient to be embraced. Supplementation, in turn, is not an isolated solution: it is intelligent support within a framework of cofactors and lifestyle. As for the symptoms too quickly attributed to age or ordinary fatigue, they often tell the story of a body lacking its foundations.<\/p>\n\n\n\n

Vitamin D is not a trendy supplement. It's a biological foundation, an essential hormone that influences immunity, mood, hormones, inflammation, and overall vitality. Deficiency is often invisible to the conventional system, but its consequences silently affect a large portion of the population.<\/p>\n\n\n\n

Understanding this hormone means regaining power over your health. It means choosing conscious sun exposure rather than a systematic fear of the sun, nourishing your body's terrain rather than just fighting symptoms, and bringing back foods that modernity has set aside.<\/p>\n\n\n\n

That is exactly what Vitacru is all about: providing the knowledge and tools you need to take a more independent approach to natural health. No matter what season it is when you\u2019re reading this, your body needs this light. It\u2019s up to you to decide how you\u2019ll give it to your body.<\/p>\n\n\n\n

References:<\/em><\/h6><\/div>\n\n\n\n
    \n
  • Holick, M.F. (2007). \u00ab Vitamin D Deficiency. \u00bb New England Journal of Medicine, 357(3), 266-281.<\/em><\/li>\n\n\n\n
  • Wacker, M., & Holick, M.F. (2013). Sunlight and Vitamin D: A global perspective for health. *Dermato-Endocrinology*, *5*(1), 51-108.<\/em><\/li>\n\n\n\n
  • Holick, M.F. (2010). The Vitamin D Solution: A 3-Step Strategy to Cure Our Most Common Health Problems. Hudson Street Press.<\/em><\/li>\n\n\n\n
  • Statistics Canada. \u00abBlood-level Vitamin D in Canadians.\u00bb Canadian Health Measures Survey (CHMS).<\/em><\/li>\n\n\n\n
  • Finamor, D.C., Sinigaglia-Coimbra, R., Neves, L.C.M., et al. (2013). \u00abA pilot study assessing the effect of prolonged administration of high daily doses of vitamin D on the clinical course of vitiligo and psoriasis.\u00bb Dermato-Endocrinology, 5(1), 222-234.<\/em><\/li>\n\n\n\n
  • Price, W.A. (1939, r\u00e9\u00e9dition 2008). Nutrition and Physical Degeneration. Price-Pottenger Nutrition Foundation.<\/em><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

    Persistent fatigue, weak immunity, mood swings? In Quebec, nearly one in two people are deficient in vitamin D without knowing it. This essential hormone influences over 2,000 genes and plays a key role in immunity, mood, and energy. Discover why it's so important and how to maintain good levels year-round.<\/p>","protected":false},"author":3,"featured_media":31814,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-31809","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sante-globale"],"uagb_featured_image_src":{"full":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash.webp",2048,1201,false],"thumbnail":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash-150x150.webp",150,150,true],"medium":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash-400x235.webp",400,235,true],"medium_large":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash-768x450.webp",768,450,true],"large":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash-1200x704.webp",800,469,true],"1536x1536":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash-1536x901.webp",1536,901,true],"2048x2048":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash.webp",2048,1201,false],"trp-custom-language-flag":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash.webp",18,12,false],"image-blog":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash-1200x480.webp",1200,480,true],"mailpoet_newsletter_max":["https:\/\/vitacru.com\/wp-content\/uploads\/2026\/05\/getty-images-Z2evmWRXDFQ-unsplash-1320x774.webp",1320,774,true]},"uagb_author_info":{"display_name":"Annie","author_link":"https:\/\/vitacru.com\/en\/author\/a5d161023cee9fe5\/"},"uagb_comment_info":0,"uagb_excerpt":"Fatigue persistante, immunit\u00e9 fragile, humeur en dents de scie ? Au Qu\u00e9bec, pr\u00e8s d\u2019une personne sur deux manque de vitamine D sans le savoir. Cette hormone essentielle influence plus de 2 000 g\u00e8nes et joue un r\u00f4le cl\u00e9 dans l\u2019immunit\u00e9, l\u2019humeur et l\u2019\u00e9nergie. D\u00e9couvrez pourquoi elle est si importante, et comment maintenir un bon niveau…","_links":{"self":[{"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/posts\/31809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/comments?post=31809"}],"version-history":[{"count":1,"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/posts\/31809\/revisions"}],"predecessor-version":[{"id":33407,"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/posts\/31809\/revisions\/33407"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/media\/31814"}],"wp:attachment":[{"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/media?parent=31809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/categories?post=31809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vitacru.com\/en\/wp-json\/wp\/v2\/tags?post=31809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}