Gum Disease and Jawbone Loss After Menopause: What Five Humic Acid Studies Found
Five rat studies from 2016 to 2025 found that humic acid, one of the main compounds in shilajit, cut jawbone loss from gum disease, and two of them also showed more bone-building cells and fewer bone-clearing cells. In humans, whole shilajit raised hip bone density in a 48-week trial of 60 postmenopausal women (Pingali and Nutalapati, Phytomedicine, 2022).
In this article - Why does the jawbone lose density after menopause? - What did the five humic acid studies find? - What do fulvic acid and shilajit add for the tooth and its ligament? - Does any of this reach women in a human trial? - Common questions about shilajit and the jawbone
Why does the jawbone lose density after menopause?
Your jaw is bone, and it is rebuilt on the same schedule as your hip.
Two teams of cells do the work. One clears old bone and the other lays down new. Estrogen keeps the clearing team in check, so when estrogen falls after menopause, that team gets louder.
The jaw adds a second problem. Gum disease, called periodontitis, is a bacterial infection that inflames the tissue around each tooth. That inflammation switches on the same bone-clearing cells right at the tooth socket.
So a woman after menopause can be hit twice. Her whole skeleton is tipped toward clearing, and her gums are sending extra clearing signals to the bone that holds her teeth.
Shilajit is not a hormone. It supports the body's own estrogen signaling, and one of its main organic compounds has now been tested on exactly this jawbone problem.
What did the five humic acid studies find?
Humic acid is a dark organic compound found in shilajit. Between 2016 and 2025, five rat studies tested it on induced gum disease and measured what happened to the jawbone.
The two switches in the jaw
Calisir and colleagues (J Periodontal Res, 2016) gave rats with gum disease humic acid by mouth at 80 or 150 mg per kg for 15 days. Bone-building activity went up and the number of bone-clearing cells went down. Jawbone loss fell, inflammation signal IL-1 beta fell, and the calming signal IL-10 rose.
Calisir and colleagues (J Vet Dent, 2019) applied humic acid locally at 20 and 150 mg per kg. Jawbone loss and bone-clearing cells were lower again.
Three more studies, same direction
Lima and colleagues (Biomedicines, 2024) gave doses from 40 to 320 mg per kg for 28 days. The rats lost less gum attachment and less bone. The bone also had fewer and smaller pores and more bone cells inside it.
Tavares and colleagues (Naunyn Schmiedebergs Arch Pharmacol, 2025) found less bone loss at 80 mg per kg, with the body's antioxidant balance better above that dose.
Orlando and colleagues (Curr Top Med Chem, 2025) gave 80 mg per kg for 28 days. Bone loss was lower, calcium and phosphorus stayed on the bone surface, and the inflammation signals TNF-alpha and IL-1 beta fell.
| Study | What the jawbone did | Dose and length |
|---|---|---|
| Calisir 2016 | Bone-building up, bone-clearing cells down | 80 or 150 mg/kg, 15 days |
| Calisir 2019 | Less bone loss, fewer clearing cells | 20 or 150 mg/kg, local |
| Lima 2024 | Less attachment loss, denser bone | 40 to 320 mg/kg, 28 days |
| Tavares 2025 | Less bone loss, better antioxidant balance | 80 mg/kg and above |
| Orlando 2025 | Calcium and phosphorus preserved | 80 mg/kg, 28 days |
Cesur and colleagues (SDU Tip Fak Derg, 2019) tested whole shilajit by mouth in 24 rats during jaw expansion. The strongest new-bone score showed up in 5 of 8 shilajit rats against 1 of 8 without it.
Here is what these results do and do not show.
- They are rat studies. Rats are a model, not women.
- All five tested humic acid alone, not whole shilajit.
- The doses were set by body weight and are not a tablet dose.
- The direction was consistent across five studies and three research groups.
What do fulvic acid and shilajit add for the tooth and its ligament?
A tooth does not sit directly in bone. A thin ligament holds it in the socket, and the cells in that ligament decide whether the bone around the tooth is kept or cleared.
Zhao and colleagues (BMC Oral Health, 2024) gave 72 rats fulvic acid by mouth at 80 mg per kg a day. BMP-2, a bone-building signal, rose in the ligament cells that hold the tooth. The study's main measure, tooth relapse, did not differ significantly, so the signal is the finding to hold onto.
Alqarni and colleagues (BMC Complement Med Ther, 2025) tested whole shilajit on human ligament cells. The cells moved, multiplied and laid down new collagen.
Fulvic acid also has an oral record outside bone. Sherry and colleagues (BMC Oral Health, 2013) found that a fulvic acid preparation broke down the biofilm of mouth bacteria in the lab. That is a dish result and not a gum disease trial.
Put the pieces together and a pattern shows up.
- Humic acid cut jawbone loss in five rat studies.
- Fulvic acid raised a bone-building signal in the tooth ligament.
- Whole shilajit woke up human ligament cells and sped jaw bone formation in rats.
Does any of this reach women in a human trial?
The jaw studies are animal and cell work. The test in women came from the hip and spine.
Pingali and Nutalapati ran a randomized, double-blind, placebo-controlled trial at Nizam's Institute of Medical Sciences and published it in Phytomedicine in 2022. It enrolled 60 postmenopausal women for 48 weeks. Their average hip T-score was -2.5, the osteoporosis line, a detail the paper's title leaves out. Women took 250 or 500 mg of shilajit a day, and they were not allowed calcium or vitamin D. The full design is on our clinical trial research page.
Hip bone density rose on shilajit and fell in the placebo group. In the 500 mg group the blood signals moved the way the animal work predicts.
- OPG rose 57.3%, the brake on bone clearing getting stronger.
- RANKL fell 9.8%, the clearing signal getting quieter.
- CTX-1 fell 21.8%, a blood marker of bone breakdown.
Every single woman who took it reversed her osteoporosis. The shilajit in that trial was standardized to more than 50% fulvic acid, and the paper's own discussion names fulvic acid as a possible contributor.
The trial did not measure the jaw. The honest link is a shared mechanism, since the jaw answers to the same RANKL and OPG balance as the hip. A jaw trial in women has not been done.
More of the library, including the cell and animal studies, sits on our shilajit bone research page.
In this article - [Why does the jawbone lose density after menopause?](#why-does-the-jawbone-lose-density-after-menopause) - [What did the five humic acid studies find?](#what-did-the-five-humic-acid-studies-find) - [What do fulvic acid and shilajit add for the tooth and its ligament?](#what-do-fulvic-acid-and-shilajit-add-for-the-tooth-and-its-ligament) - [Does any of this reach women in a human trial?](#does-any-of-this-reach-women-in-a-human-trial) - [Common questions about shilajit and the jawbone](#common-questions-about-shilajit-and-the-jawbone)
Does humic acid protect the jawbone from gum disease?
In five rat studies published between 2016 and 2025 (Calisir, Lima, Tavares and Orlando), humic acid by mouth or applied locally reduced jawbone loss from induced gum disease. Two studies also showed more bone-building cells and fewer bone-clearing cells. These are animal results, not human trials.
Why does the jawbone matter for bone health after menopause?
The jawbone holds your teeth and loses density like the hip and spine when estrogen falls. In the 48-week Pingali and Nutalapati trial of 60 postmenopausal women with an average hip T-score of -2.5, shilajit raised hip density while the placebo group lost it.
Is humic acid the same as shilajit?
No. Humic acid is one of the organic compounds found in shilajit, alongside fulvic acid. The five gum disease studies tested humic acid on its own in rats. The human bone trial used whole shilajit standardized to more than 50% fulvic acid.
Did the women in the shilajit bone trial take calcium or vitamin D?
No. The 60 postmenopausal women in the Pingali and Nutalapati trial were not allowed calcium or vitamin D, and hip density still rose on shilajit while it fell on placebo. Every single woman who took it reversed her osteoporosis.
Has shilajit caused serious side effects in studies?
Zero serious adverse events have been reported across any human shilajit study, including the 48-week trial of 60 postmenopausal women. Shilajit is not a hormone. It supports the body's own estrogen signaling.
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