DEXA Scores Explained: What Your T-Score Actually Tells You

What is a DEXA scan, and what does it measure?

A DEXA scan measures bone mineral density, which is how much mineral is packed into a given area of bone. DEXA stands for dual-energy X-ray absorptiometry, and the name describes the trick: it sends two low-dose X-ray beams through you, and dense bone blocks them differently than soft tissue does.

For you, it is about as eventful as lying still on a padded table for ten minutes. There is no injection and no tunnel, and the radiation dose is a small fraction of a standard chest X-ray. Most scans read the hip and the lower spine, because those are the sites where a fracture changes a life the most.

What comes back is a density figure and, more importantly, two scores that put that figure in context: the T-score and the Z-score. The scores are the part worth understanding.

What does your T-score actually tell you?

Your T-score compares your bone density to a healthy 30-year-old at peak bone mass. It is written as a number of standard deviations above or below that young-adult benchmark, which is why it is almost always a negative number once you are past your forties. That is expected, not alarming.

Here is how the ranges break down, using the standard World Health Organization classification:

A practical way to read it: each full point below zero is roughly a 10 to 12 percent step down in density from that young-adult peak. So a -1.5 is not a crisis. It is a signpost telling you the building crew has fallen a little behind the teardown crew, and now is a good time to give it support.

One number on its own is also less telling than its direction. A -1.8 that was -2.1 two years ago is good news. The trend across scans on the same machine often matters more than any single reading.

T-score vs Z-score: which one matters for you?

For most women past menopause, the T-score is the headline and the Z-score is the footnote, but both have a job. They answer different questions.

• The T-score compares you to a young adult at peak bone mass. It is the number used to classify bone status after menopause and to track change over time.
• The Z-score compares you to other people your own age and sex. It is most useful for catching loss that is unusual for your age, which can hint that something beyond ordinary aging is at work.

So if your T-score is low but your Z-score is right around zero, your bones are doing about what is typical for your age. That is the common picture after menopause, and it is exactly the situation where steady, everyday support earns its place.

Can your T-score improve, or only get worse?

It can improve, and that is the part the number alone never tells you. Bone is living tissue that tears down and rebuilds for your entire life, so the score reflects a process you can still influence, not a verdict carved in stone.

The strongest evidence in the field makes the point directly. Pingali and colleagues (2022), in Phytomedicine, followed 60 postmenopausal women with osteopenia for 48 weeks in a randomized, double-blind, placebo-controlled trial. Every single woman in the treatment group reversed her osteopenia within 24 weeks, with bone mineral density preserved dose-dependently and zero side effects recorded.

It does not stand alone. The supporting work points the same way from other angles:

• In a double-blind trial of 160 people, Sadeghi and colleagues (2020) found oral shilajit cut average tibial-fracture healing time to 129 days versus 153 days on placebo, around 24 days faster.
• In the laboratory, Kangari and colleagues (2022) showed shilajit speeding up the maturation of human bone-forming cells, raising both their alkaline phosphatase activity and their calcium deposition.

The honest framing is that the number moves slowly. A full remodeling cycle takes months, which is why scans are repeated every year or two. What you do between scans, consistently, is what shows up on the next one.

What does a low T-score actually need? Not just calcium.

A low score is a signal that the bone-building system is short on materials, and calcium is only one of them. Picture reinforced concrete. The steel rebar is the flexible framework and the concrete is the hard mineral, and you need both or the structure fails.

Bone is built the same way. Collagen forms the scaffold that gives bone its flex, and minerals harden it. Pour calcium onto a scaffold that is not there and you get chalk, not strength. So supporting a low T-score means feeding the whole system:

• The collagen scaffold. New bone begins as fresh collagen before any mineral hardens it. Das and colleagues (2016) found oral shilajit switched on connective-tissue genes in human muscle, the main collagen gene running about five times its normal level, and Das and colleagues (2019) saw the same matrix-building genes turn on in the skin of middle-aged women.
• A full spread of minerals. The matrix draws on magnesium, zinc, manganese, boron, and silicon, not calcium alone, and a modern plate often runs short on the trace elements that round out the picture.
• Cellular energy. The cells that lay down bone run on energy from their mitochondria, and shilajit's dibenzo-alpha-pyrones support that energy machinery, helping preserve the CoQ10 those engines depend on.

This is the whole-body thread behind one bone number. Bone is collagen, minerals, and energy working together, the same systems that show up when you read about skin elasticity or steady afternoon energy.

Where does a whole-food mineral complex fit?

It covers the wide, quiet base of trace minerals the bone matrix is built on. Shilajit is a mineral-rich resin from the Altai mountains, and its strength is that it delivers more than 80 trace minerals together, in a form your body recognizes from food.

The carrier is what makes that work. Fulvic and humic acids, the active organic compounds in shilajit, are natural chelators. Their small size and ionic charge let them grab mineral ions and walk them across the cell membrane, the most-studied property of these compounds and the same route minerals in whole food take to reach your cells.

That is why shilajit reads less like a single-mineral tablet and more like the mineral side of a good diet, scaled up, arriving alongside the collagen-gene support and the mitochondrial energy the building cells lean on.

Purity is the one thing that decides whether it is worth taking. Raw resin off the rock can carry the very heavy metals you want to avoid. Optimum sources from the Altai mountains, purifies every batch, and tests for all four heavy metals, lead, arsenic, cadmium, and mercury, through a US-accredited laboratory, with the full results published before you buy.

Across every human shilajit study ever run, zero serious adverse events have ever been reported. We are family-owned, out of Florida, and that is the standard we think the whole category should hold.