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Iron, explained properly.

Most of what’s written about iron is either a supplement ad or a pamphlet. These are the honest versions — sourced, and straight about what the evidence does and doesn’t show.

• How much iron do women actually need?

  Women aged 19–50 need 18 mg of iron a day. Men need 8 mg. Here's where that number comes from, why the average woman falls short of it, and what that does and doesn't mean.

  6 min read →

• Why iron supplements upset your stomach

  Nausea and constipation on iron pills are real and well documented. Here's what causes them, why the dose matters more than the brand, and what actually helps.

  5 min read →