How can 20,000 IU of vitamin D3 be toxic if 40 minutes of sun exposure provides the same amount?
Yet, most guidelines recommend only 600 IU daily—just enough to prevent rickets, not optimize health.
Here’s why you need way more vitamin D3 than you think:🧵
Over 90% of people are vitamin D deficient—and don’t know it.
Why it matters:
• It controls 10% of your genes
• It’s vital for immunity, blood pressure, muscles, and brain health
• Low levels are linked to depression, pain, and inflammation
Why aren’t people getting enough?
Modern life makes getting enough vitamin D nearly impossible.
More time indoors means less sun exposure. Glass blocks UV rays so sunlight through windows won’t help. If your shadow is longer than you, your body isn’t absorbing vitamin D.