Vitamin D: the essential most of us are missing
Vitamin D is unlike any other nutrient: your body manufactures it itself, in the skin, under sunlight. It is an elegant system with one structural weakness. At European latitudes, from October to April, the sun is simply too low for meaningful synthesis. Add indoor lifestyles, sunscreen and office hours, and vitamin D becomes the nutrient most of us quietly lack for half the year. Immunity Daily was designed around this single, essential nutrient. Here is what vitamin D actually does, why the liposomal form matters, and how to make it a year round habit.
What is vitamin D and where does it come from?
Vitamin D is a fat soluble vitamin that behaves more like a hormone precursor than a classic vitamin. The natural production route is cutaneous: UVB rays convert a compound in the skin into vitamin D3, which the body then activates. Food provides some, mainly through oily fish, but dietary intake alone rarely covers needs, which is why vitamin D supplementation is one of the most widely discussed topics in European nutrition.
Why intakes drop from autumn to spring
The angle of the sun matters more than the temperature. Above roughly the 40th parallel, which includes all of France, UVB exposure in winter is too weak for meaningful synthesis regardless of how sunny the day looks. This seasonal reality is well documented by European health authorities, and it explains why vitamin D deserves attention as a daily habit rather than an occasional fix.
What vitamin D is officially recognised to do
Few nutrients carry as many authorised claims in the European register. Vitamin D contributes to the normal function of the immune system. It contributes to the maintenance of normal bones and normal teeth. It contributes to the maintenance of normal muscle function. And it contributes to the normal absorption and utilisation of calcium and phosphorus, as well as to normal blood calcium levels.
At State, these authorised formulations are the only ones we use. No promises, no amplification: what science allows us to say, nothing more, and nothing less. Our full approach is detailed on The Science.
Why we chose the liposomal form
Vitamin D is fat soluble: how it is carried matters. In Immunity Daily, vitamin D3 comes in liposomal form, associated with a phospholipid complex, the same family of molecules that composes your own cell membranes. This carrier structure is designed to support the bioavailability of the active it transports, the same delivery logic we apply to the vitamin C in Energy Daily.
How to take vitamin D
The routine is simple: 2 capsules per day with a large glass of water, ideally with a meal, since vitamin D is fat soluble. One jar of 60 capsules covers exactly 30 days. Because the need is structural rather than seasonal in modern indoor life, we designed Immunity Daily as a year round base, not a December reflex.
Frequently asked questions
Should I take vitamin D in summer too?
Summer sun exposure helps synthesis, but modern life keeps most of us indoors during peak hours, with sunscreen when outside. This is why we designed a formula suitable for a year round daily routine. Always respect the stated recommended daily dose.
Vitamin D2 or vitamin D3, what is the difference?
D2 is of plant origin, D3 is the form the skin itself produces and the most used in research. Immunity Daily uses vitamin D3.
Can I combine vitamin D with other State formulas?
Yes, The Daily Range is designed as a system and the formulas account for each other. If you are pregnant, breastfeeding or under medical treatment, ask your doctor or pharmacist first.
How do I know if I lack vitamin D?
Only a blood test prescribed by your doctor can answer that question individually. A supplement is a daily nutritional base, not a medical diagnosis.
The State standard
Immunity Daily is made in France with full batch traceability, in a vegetal capsule, gluten-free. It is available on its own or as a monthly subscription with 15% off every delivery. Discover the formula on the product page or explore the whole Daily Range.
Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the stated recommended daily dose. Keep out of reach of young children.
