What Your T-Score Really Means, and Why It Keeps Dropping After Menopause

What does a T-score actually measure?

A T-score is a statistical distance, not a raw density reading. It tells you how many standard deviations your bone mineral density sits above or below the average peak density of a healthy young adult, typically a 30 year old woman.

A score of 0 would mean your bone matches that peak exactly. A score of -1.0 means your density sits 1 standard deviation below it. The further negative the number runs, the further your bone has drifted from that reference point.

The 3 bands your report will use

Every DEXA report sorts the number into 1 of 3 ranges, and the labels matter more than most patients realize when the report first lands in their hands.

These bands were built around fracture risk data, not around how a bone looks or feels. A woman can carry a -2.3 score and have no symptoms at all, which is exactly why the scan exists.

Why does the number keep dropping after menopause?

Bone is not a static mineral deposit. It is living tissue that breaks down a little and rebuilds a little, continuously, across your entire life.

The instruction that keeps that rebuild side running is a hormonal signal, and that signal is estrogen. When estrogen falls at menopause, the breakdown half of the cycle keeps its usual pace while the rebuild half slows down, and the gap between the two is exactly what a T-score is measuring years later.

Why calcium alone does not close the gap

This is the part most women get told backwards. Calcium is a raw material, not an instruction. It hardens onto a collagen scaffold that estrogen signaling helps direct and maintain.

Without the signal, the calcium a woman keeps taking has nowhere useful to go. It does not reliably reach the scaffold that needs it, which is one reason a T-score can keep drifting lower even in women who are conscientious about their calcium intake every single day.

• The breakdown side of bone remodeling does not slow at menopause
• The rebuild side depends on a signal that falls sharply
• Calcium supplies material, not the instruction to use it
• The gap between breakdown and rebuild is what the scan reports back
• That gap widens year over year unless the signal is addressed directly

What did the shilajit bone trial actually find?

Pingali and colleagues (2022) ran the strongest human evidence in this space, a double blind, placebo controlled trial in 60 postmenopausal women with diagnosed bone loss, tracked across 48 weeks.

Baseline scans showed osteopenia at the lumbar spine and osteoporosis at the femoral neck, the hip. Over the study, the group taking purified shilajit saw bone mineral density climb at both sites. The placebo group continued to lose ground. Zero adverse events were reported at any safety check across the full 48 weeks.

The mechanism behind the result

Two smaller studies help explain why the number moved.

Abbasi and colleagues (2019) found that low dose shilajit raised proliferation of osteoblast like cells in vitro, the cells directly responsible for laying down new bone. Kangari and colleagues (2022) found shilajit accelerated the process by which human stem cells differentiate into bone forming cells, again in vitro.

Neither of those 2 findings is a human trial on its own, and they should be read as supporting mechanism work rather than standalone proof. Put next to the Pingali density result, they form a coherent explanation for what moved the number, a signal reactivated, cells that build bone responding to it.

Is a T-score the same thing as a Z-score?

No, and mixing the two up leads a lot of women to misread their own report.

A T-score is fixed against 1 reference point, peak bone mass in a healthy young adult. A Z-score compares your density to other people your own age and sex instead. It moves the goalposts to match the room you are standing in.

Why the T-score is the one that matters for diagnosis

A 65 year old woman could have a Z-score near 0, meaning her bone looks typical for her age group, and still carry a T-score of -2.4, meaning her bone sits well below peak density. Both numbers can be true at once, and only 1 of them is used to diagnose osteoporosis.

• T-score: compares you against peak bone mass, used for diagnosis
• Z-score: compares you against your own age and sex group, used to flag unusual loss
• A low T-score with a normal Z-score simply means your loss looks typical for your age, not that it is safe to ignore
• A low Z-score at any age is a signal worth a closer look
• Neither number tells you why the loss happened, only how much

What can actually move the number back up?

Short version, it takes restoring the signal, not just adding more material. Calcium and vitamin D remain worth taking as a baseline, they supply raw mineral. What the research above points to is a separate lever, the estrogen signaling pathway that tells the body what to do with that mineral once it arrives.

Shilajit does not add estrogen to the body. It is not a hormone. What the fulvic acid inside it appears to support is the body's own estrogen signaling, the same pathway that fell quiet at menopause and that the Pingali trial measured moving density in the right direction over 48 weeks.

They are not competitors, and a low blood mineral level should always be corrected directly. The gap this addresses sits somewhere else, in the instruction that decides where the mineral goes once it is on board.

Across every human shilajit study published so far, not one serious adverse event has been reported, and that safety record holds up alongside the density results rather than trading against them.

Sourcing and purity still matter

Not every shilajit on the market is tested the same way. Optimum sources from the Altai mountains, purifies each batch, and publishes a full lab report testing for all 4 major heavy metals on every batch sold.

That distinction matters more here than in most supplement categories, because raw unverified resin can carry exactly the contaminants a woman is trying to avoid, and a bone trial's safety record only applies to the purified form that was actually studied.

Pure Altai shilajit, tested in full

Sourced from the Altai mountains, purified, and tested for all 4 heavy metals with the report published for every batch. Family owned out of Florida. If you want the signal this article describes, here is .

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