🌞 Sunlight & Vitamin D • Sunlight gives UVA & UVB, not vitamin D itself. • UVB skin cholesterol (7-dehydrocholesterol) → liver & kidneys → vitamin D. 🧂 Salt & Thyroid • Iodised salt prevents goitre & hypothyroidism. • Leaving iodised salt in sunlight or open air deactivates iodine. • Low iodine → thyroid problems; still no vitamin D from salt. 💊 If Vitamin D is Low • Sources: fatty fish, egg yolk, fortified dairy, mushrooms. • Supplements for mild deficiency; injections for severe cases. • Ta
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FacebookSandy Jacob
🌞 Sunlight & Vitamin D • Sunlight gives UVA & UVB, not vitamin D itself. • UVB skin cholesterol (7-dehydrocholesterol) → liver & kidneys → vitamin D. 🧂 Salt & Thyroid • Iodised salt
Sandy Jacob. Sandy Jacob · Original audio. 🌞 Sunlight & Vitamin D • Sunlight gives UVA & UVB, not vitamin D itself. • UVB skin cholesterol (7-dehydrocholesterol) → liver & kidneys → vitamin D. 🧂 Salt & Thyroid • Iodised salt prevents goitre & hypothyroidism. • Leaving iodised salt in sunlight or open air deactivates iodine ...
767.3K views8 months ago
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You need UVB rays, not just sunshine Only UVB radiation triggers vitamin D production in the skin. Many things block UVB: Clouds, air, pollution, sunscreen, makeup, clothing, etc. Vitamin D starts as cholesterol If cholesterol is: • Too low • Suppressed by statins • Poorly produced due to hormonal or metabolic issues Skin tone and aging matter • Darker skin (more melanin) naturally blocks UVB • Aging skin produces up to 75% less vitamin D than younger skin Your liver and kidneys must activate it
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You need UVB rays, not just sunshine Only UVB radiation triggers vitamin D production in the skin. Many things block UVB: Clouds, air, pollution, sunscreen, makeup, clothing, etc. Vitamin D starts as cholesterol If cholesterol is: • Too low • Suppressed by statins • Poorly produced due to hormonal or metabolic issues Skin tone and aging matter • Darker skin (more melanin) naturally blocks UVB • Aging skin produces up to 75% less vitamin D than younger skin Your liver and kidneys must activate it
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You need UVB rays, not just sunshine Only UVB radiation triggers vitamin D production in the skin. Many things block UVB: Clouds, air, pollution, sunscreen, makeup, clothing, etc. Vitamin D starts as cholesterol If cholesterol is: • Too low • Suppressed by statins • Poorly produced due to hormonal or metabolic issues Skin tone and aging matter • Darker skin (more melanin) naturally blocks UVB • Aging skin produces up to 75% less vitamin D than younger skin Your liver and kidneys must activate it
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