Nutrition

Evidence-based advice from registered dietitians on the best foods, vitamins and nutrients — separating the facts from the fads.

Fresh oysters on the half shell with lemon wedges and ice on a blue wooden table

The Health Benefits of Copper

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Copper is an essential mineral, and most healthy adults get all they need from a balanced diet. A pharmacist breaks down how much you need, which foods deliver it, who is at risk of deficiency, and what the evidence says about copper bottles and bracelets.

A tipped-over salt shaker spilling salt beside a pile of fried potato wedges on rustic wood

The Saltiest Fast Food in America

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Calories are not the number doing the damage. We used each chain’s own published nutrition data to rank 18 fast food chains by the saltiest single item on the menu, and the worst one carries more than three days of sodium.