Getting the Most From Calcium — How to Actually Absorb It
Most of us know calcium is essential for strong bones and teeth — but fewer people know that getting enough calcium in your diet is only half the equation. How well your body actually absorbs it matters just as much.
Key ways to maximize calcium absorption:
☀️ Pair calcium with vitamin D — Vitamin D is essential for calcium absorption in the gut. Without it, your body absorbs very little calcium regardless of how much you consume. Food sources include wild-caught fatty fish, egg yolks, and UV-exposed mushrooms. Talk to your doctor about whether supplementation is right for you.
🥬 Choose the right calcium-rich foods — Dark leafy greens like kale, bok choy, and broccoli are excellent absorbable sources of calcium. Dairy, fortified plant milks, white beans, almonds, and sardines with bones are also strong sources.
🌿 Watch your oxalate intake — Some foods high in oxalates (like spinach and beet greens) bind to calcium and reduce absorption. This doesn't mean avoiding them — just don't rely on them as your primary calcium source.
🧂 Limit excess sodium and caffeine — Both can increase calcium excretion through urine over time. Moderate, consistent intake of both is generally fine, but excess works against bone health.
💊 If supplementing, split your dose — The body absorbs calcium best in smaller amounts. If taking a supplement, splitting it into two smaller doses is more effective than one large one.
🏋️ Move your body — Weight-bearing exercise signals your body to use calcium to maintain and build bone density. Walking, resistance training, and yoga all contribute.
At OSK, many of our soups are rich in kale, white beans, and other calcium-supportive ingredients — nourishing your bones one bowl at a time.