Food vs. Supplements: Why Where You Get Your Minerals Matters
By Wendy Zhang, PhD · Food Scientist & Founder, SESAShare
Every wellness aisle now has two sections: food and supplements. But that division is relatively recent — and it may not serve us as well as we think.
The case for supplements is real. They're convenient, standardized, and often the only practical way to address specific deficiencies. The case for food is also real. Nutrients in whole foods come packaged with fiber, cofactors, and compounds that affect absorption and utilization in ways isolated supplements can't replicate.
What the research suggests is more nuanced than either camp typically admits.
Bioavailability: the absorption question
Not all forms of a nutrient are equally absorbed. Magnesium glycinate and magnesium oxide have different bioavailability profiles. Iron from heme sources (meat) absorbs differently than non-heme iron (plants) — and vitamin C in the same meal changes that again.
Food isn't automatically superior here. A supplement formulated with a highly bioavailable form of a mineral may outperform a food source. But the cofactors present in whole foods — the enzymes, phytonutrients, and fiber — influence how nutrients are processed beyond simple absorption rates.
Context matters. A multivitamin taken with a meal behaves differently than one taken on an empty stomach. An iron-rich food eaten with a vitamin C source performs differently than the same food eaten alone.
What supplements do well
Certain deficiencies are hard to address through food alone. Vitamin D in northern latitudes during winter is one. B12 for vegans is another. Omega-3s at therapeutic doses. Iodine in regions without iodized salt or seafood.
In these cases, supplements aren't a workaround — they're the right tool.
What food does well
Food delivers nutrients in combination, not isolation. Black sesame seeds contain iron, magnesium, zinc, calcium, copper, and manganese in a single source — along with sesamin, sesamolin, and fiber that influence how the body processes those minerals.
Per serving: iron 20% DV, magnesium 20% DV, calcium 15% DV, zinc 15% DV, copper 90% DV, manganese 25% DV, protein 5g, fiber 4g.
Eating real food also tends to be more sustainable as a long-term behavior. Pills are easy to forget. A snack that tastes good is easier to maintain.
The actual answer
The binary is a marketing construct. Most people would benefit from both: a diet structured around nutrient-dense whole foods, with targeted supplementation for the specific gaps that food can't close.
The question worth asking isn't “food or supplements?” It's: what are your actual gaps, and what's the most effective way to address each one?
SESA Black Sesame Crunch is designed to close the mineral gap through food — eight ingredients, no additives. Learn more at sesawellness.com.