Back to today’s briefing

Story perspectives

Over 100,000 Supplements: Safety Risks and Expert Warnings

1/8/2026

40 7

Summary

Story summary

The U.S. market offers more than 100,000 dietary supplements, but safety is often misunderstood.
Dr. Pieter Cohen warns there is little government oversight, so verify labels with NSF or USP.
People should consult a healthcare provider before starting any supplement because medications can interact, and excessive multivitamins, calcium, or vitamin D pose risks.

1 of 1

Story summary

The U.S. market offers more than 100,000 dietary supplements, but safety is often misunderstood.
Dr. Pieter Cohen warns there is little government oversight, so verify labels with NSF or USP.
People should consult a healthcare provider before starting any supplement because medications can interact, and excessive multivitamins, calcium, or vitamin D pose risks.