Rachel Nguyen | Expert Contributor at Optuvit

Fish Oil Benefits: What Omega-3 Fatty Acids Actually Do in Your Body

Fish oil has been in the wellness conversation for decades. At some point it became the supplement that everyone’s parents […]

Your skin has been drier than usual lately. Not dramatically so — just a persistent dullness that moisturizer doesn’t quite

Vitamin D is one of the most supplemented nutrients in the world — and also one of the most frequently

Let’s start with what’s actually true: for most healthy adults, vitamin D3 at standard supplemental doses is safe. Meaningful side

You’ve been taking vitamin D consistently. Maybe three months, maybe six. You go back for a blood test expecting your

The bottle says 1,000 IU. A friend takes 5,000 IU. Your doctor’s letter mentions 2,000 IU. You’ve read that most

Here’s something worth knowing before you start a vitamin D supplement routine: vitamin D tells your body to absorb more

You’ve been taking vitamin D for months. You’re consistent, you take it with food, you’ve read that it takes time.

There’s a particular kind of tired that’s hard to describe. It’s not the tired you feel after a long run

You’ve tried most of the usual things. Consistent bedtime. Limiting screens. Maybe magnesium. Maybe melatonin. Things have improved — a