Do You Really Need a Multivitamin? What to Know Before You Buy

What a multivitamin actually does

A multivitamin isn't a replacement for a balanced diet, but it can help cover gaps that are common even in people who eat reasonably well, things like vitamin D, B12, magnesium, and iron. If your diet is inconsistent, heavily restricted, or you have higher physical demands from training, a daily multivitamin can be a simple insurance policy.

Who benefits most

• People with restrictive diets (vegan, vegetarian, or low-calorie).
• Athletes and people who train frequently, since exercise increases micronutrient turnover.
• Anyone recovering from illness or under ongoing stress, which depletes certain nutrients faster.

What to look for on the label

Choose a multivitamin dosed close to 100% of the daily value for most nutrients rather than extreme megadoses, which the body often can't use efficiently anyway. Third-party tested products (look for NSF or Informed-Sport seals) are a good sign of quality control, especially for athletes.

Beyond the multivitamin

Targeted supplements, like probiotics for gut health or specific B-vitamin blends for energy metabolism, can complement a multivitamin if you have a specific goal in mind.

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