Articles

A sleep mask, work badge, and 8:15 clock sit before blackout curtains as one seam of morning light enters.

How can night-shift workers protect daytime sleep?

Evidence-based ways to protect daytime sleep after night shifts, including timing, light, sound, and planned naps.

How can night-shift workers protect daytime sleep?

Evidence-based ways to protect daytime sleep after night shifts, including timing, light, sound, and planned naps.

Editorial pathway diagram showing supplemental B-12, intrinsic factor, and small-intestine absorption.

How vitamin B-12 gets from a gummy into the body

Vitamin B-12 absorption is a handoff, not a single step.

How vitamin B-12 gets from a gummy into the body

Vitamin B-12 absorption is a handoff, not a single step.

Should adults be screened for low vitamin D?

Should adults be screened for low vitamin D?

What the USPSTF says about routine vitamin D screening in asymptomatic adults, how screening differs from testing for a clinical reason, and when to ask a clinician.

Should adults be screened for low vitamin D?

What the USPSTF says about routine vitamin D screening in asymptomatic adults, how screening differs from testing for a clinical reason, and when to ask a clinician.

Amber On Call D3 gummy on a warm cream editorial background.

Why does On Call D3 use D3 instead of D2?

D2 and D3 are both forms of vitamin D. Here is why On Call D3 uses algae-derived D3, what the comparison evidence supports, and what it does not.

Why does On Call D3 use D3 instead of D2?

D2 and D3 are both forms of vitamin D. Here is why On Call D3 uses algae-derived D3, what the comparison evidence supports, and what it does not.

One small amber-orange dome gummy on the left and three plain off-white two-piece capsules on the right of an off-white travertine surface in soft side daylight. No bottle, text, paper, person, or additional props.

What evidence-informed means on a supplement label

A practical reading order for supplement claims, amounts, forms, and sources.

What evidence-informed means on a supplement label

A practical reading order for supplement claims, amounts, forms, and sources.

What supplement labels are trying to tell you

A plain-language guide to vitamin D and B-12 label units, dose scale, and the questions worth asking before a number on the bottle does the thinking.

What supplement labels are trying to tell you

A plain-language guide to vitamin D and B-12 label units, dose scale, and the questions worth asking before a number on the bottle does the thinking.