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How Body pH Affects Your Bones, Joints, and Long-Term Health
Body pH balance rarely comes up until a doctor mentions arthritis, bursitis, or bone density loss, and by then the conversation is usually about managing symptoms rather than tracing the cause. What often goes unexplained is how those conditions form in the first place. Blood pH has to stay within an extremely narrow range for the body to function, and it holds that range by any means necessary, including by drawing minerals out of bone and tooth structure when nothing else is available.
The Mechanism Behind An Acidic Body
Blood pH sits in a tight band, and the body treats any drift outside it as an emergency. A diet heavy in acid-forming foods, along with stress and certain environmental factors, pushes the body toward that edge.
Rather than let blood pH move, the body buffers the acid using alkaline minerals it can access quickly, primarily calcium and magnesium stored in bone. Researchers describe this as dietary acid load: a measure of how much net acid a diet generates once food is metabolized, with foods like meat, grains, and cheese contributing more than fruits and vegetables.
Where Those Minerals End Up
The calcium and magnesium pulled from bone don’t simply return to storage once the acid is buffered. In many cases, they circulate and settle in joints and soft tissue instead. This is the connection Susana draws in her class: what shows up years later as the calcifications behind arthritis, bursitis, and arteriosclerosis often traces back to a body that has spent a long time borrowing from its own skeleton.
An aging joint or a hardening artery isn’t always simply a matter of age. It can be the visible result of a mineral withdrawal that’s been happening for years.
What The Research Says
The relationship between dietary acid and bone health has been studied for decades, and the findings aren’t entirely settled. Some studies, including work published in the Journal of Bone and Mineral Research, found that a high dietary acid load was linked to lower bone mineral density specifically in people with low calcium intake, while adequate calcium appeared to offset the effect.
Other research has questioned how much of a role diet-driven acidity plays compared to other factors like age, hormone changes, and physical activity. Taken together, the honest summary is that dietary acid load is one contributing factor among several, and calcium and magnesium intake are consistently the variables that matter most across the studies.
Testing Your Own pH at Home
A urine pH strip offers a simple, low-cost way to see where your body tends to sit. First-morning urine, tested before eating or drinking, gives the most consistent reading, since pH shifts throughout the day based on meals and hydration. A single test tells you very little. A pattern over one to two weeks tells you whether your body is consistently running acidic, which is far more useful than guessing.
The 80/20 Rule For Alkaline And Acid Foods
A practical target is roughly 80 percent alkaline-forming foods to 20 percent acid-forming foods. Leafy greens, most vegetables, and many fruits sit on the alkaline side. Animal protein, refined grains, sugar, and processed foods sit on the acid side. This isn’t about eliminating a food group. It’s about keeping enough alkaline reserve on hand that the body isn’t forced to raid bone to stay in range.
Modern soil depletion makes that harder than it used to be. Decades of intensive farming have reduced the trace mineral content of most produce, which means even a genuinely alkaline-focused diet may fall short on the minerals the body needs to buffer acid. We Care Ionic Minerals is a dropper-based mineral supplement built for exactly this gap, delivering 72 trace minerals in a form that mixes into water, juice, or a morning shake. It’s a small, practical way to support the same mineral reserves the 80/20 rule is designed to protect.
Susana Belen has taught this mechanism as part of her 7 Steps For Rejuvenation class for 40 years, and it remains one of the more direct explanations for why joint and bone issues so often trace back to what’s on the plate rather than simply age.
Frequently Asked Questions
Can an acidic body really cause arthritis?
Acidity alone doesn’t cause arthritis, but the mineral loss that comes with a chronically acidic body contributes to the calcifications associated with it.
How often should I test my urine pH?
Testing each morning for one to two weeks gives a more reliable picture than a single reading, since pH naturally shifts day to day.
Is the 80/20 rule the same for everyone?
It’s a general target rather than a fixed prescription. Some people need to lean further alkaline depending on their current pattern.
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