Has there been any research done on Shilajit?

Yes. Tons of research has been conducted in Eastern universities. I have listed a few of the reference materials I have used for this website.
 

1. Antioxidant defense by native and processed Shilajit-A comparative study.
    Indian journal of Chemistry
    Vol. 35B, Feb. 1996, pg. 127-132


2. Effects of Shilajit on biogenic free radicals
    Phytotherapy Research, Vol. 9, pp 56-59 (1995)
    Salil K. Bhattacharya and Ananda P. Sen
    Dept. of Pharmacology, Instituite of Medical Sciences, Banaras Hindu University,
    Varanasi-221005, India
 

3. Antiulcerogenic and antiinflamatory studies with Shilajit
    Journal of Ethnopharmacology, 29 (1990) 95-103
    Elsevier Scientific Publishers Ireland Ltd.

4. Effect of Shilajit on rat brain monoamines
    S. K. Bhatineharyn, Dept. of Pharmacology, Instituite of medical sciences, Banaras Hindu University,  Varanasi-221005, India.

S. Ghosal, Department of pharmaceutics, instituite of technology, Banaras Hindu University, Varanasi-          221005, India


5. Chemistry of Shilajit, an immunomodmodulatory Ayurvedic rasayan
    Pure & Appl. Chem., Vol. 62, No. 7, pp. 1285-1288, 1990
    Printed in Great Brittan. Copyright 1990 IUPAC


6. Shilajit induced morphometric and functional changes in mouse peritoneal macrophages.
    Shibnath Ghosal
    Dept. of Pharmaceutics, Banaras Hindu University, Varanasi-221005, India
    Sluboni Baumik and Sukumar Chattopadhyay
    Dept. of biotechnology and life sciences, Jadavpur University, Calcutta-700032, India


7. Effects of Shilajit and its active constituents on learning and memory in rats
    S. Ghosal and J. Lal Pharmaceutical chemistry research laboratory, department of pharmaceutics, institute of technology, Banaras Hindu University,
Varanasi-221005, India

Shilajit research by health condition.


Allergies
Mast Cell Protecting Effects of Shilajit and Its Constituents
Phytotherapy Research Vol. 3, No. 6, 1989 pp249-252


Anti-inflammatory
Antiulcerogenic and Anti-inflammatory Studies With Shilajit
Journal of Ethno pharmacology, 29 (1990) 95-103
Elsevier Scientific Publishers Ireland Ltd.


Antioxidant
Effects of Shilajit on Biogenic Free Radicals
Phytotherapy Research, Vol. 9, pp 56-59 (1995)
Salil K. Bhattacharya and Ananda P. Sen
Dept. of Pharmacology, Institute of Medical Sciences, Banaras Hindu
University, Varanasi-221005, India

Interaction of Shilajit With Biogenic Free Radicals
Shibnath Ghosal, Soumyn Lata, Yatendrn Kumar
Department of Pharmaceutics, Banaras Hindu University, Varanasi-221005,
India

Antioxidant Defense By Native and Processed Shilajit-A Comparative Study
Indian journal of Chemistry
Vol. 35B, Feb. 1996, pg. 127-132


Diabetes
Shilajit Attenuates Streptozotocin Induced Diabetes Mellitus and Decrease In Pancreatic Islet Superoxide Dismutase Activity In Rats.
Salil K. Bhattacharya, Neuropharmacology laboratory, Dept. of Pharmacology,
Institute of medical sciences, Banaras Hindu University, Varanasi-221005, India


General
Chemical Studies On A Nepalese Panacea - Shilajit
Int. J. Crude Drug Res. 25 (1987), No. 3, pp. 179-182

Unearthing The Evidence
Chemistry in Brittan March 1997 pp32-34

Chopra's Indigenous Drugs of India
Second Edition pg. 457-461
Academic Publishers, Calcutta

Pharmacological Actions of Shilajit
S.B. Acharya, M.H. Frotan, R.K.Goel, S.K. Tripathi, P.K. Das,
Department of Pharmacology, institute of medical sciences, Banaras Hindu
University, Varanasi-221005, India

Shilajit, A Comparative Study of The Ancient and Modern Scientific Findings
Indian J. Indg. Med. April 1995-September 1995 Vol. 17(1):

The Chemistry of Shilajit Odour
Indian Journal of Chemistry, Vol. 34B, January 1995, pp. 40-44

Shilajit: Its Origin and Significance
Indian J. Indg. Med. (1992), 9 (1&2)


Immunity
Shilajit Induced Morphometric and Functional Changes In Mouse Peritoneal Macrophages
Shibnath Ghosal
Dept. of Pharmaceutics, Banaras Hindu University, Varanasi-221005, India
Sluboni Baumik (Sraboni Bhaumik) and Sukumar Chattopadhyay
Dept. of biotechnology and life sciences, Jadavpur University,
Calcutta-700032, India

Chemistry of Shilajit, An Immunomodmodulatory Ayurvedic Rasayan
Pure & Appl. Chem., Vol. 62, No. 7, pp. 1285-1288, 1990
Printed in Great Brittan.
Copyright 1990 IUPAC


Memory
Effects of Shilajit and Its Active Constituents On Learning and Memory In Rats
S. Ghosal and J. Lal Pharmaceutical chemistry research laberatory,
department of pharmaceutics, institute of technology, Banaras Hindu
University, Varanasi-221005, India


Effect of Shilajit On Rat Brain Monoamines
S. K. Bhatineharyn
Dept. of Pharmacology, Institute of medical sciences, Banaras Hindu
University, Varanasi-221005, India
S. Ghosal, Department of pharmaceutics, institute of technology, Banaras
Hindu University, Varanasi-221005, India



Ulcer
Antiulcerogenic and Anti-inflammatory Studies With Shilajit
Journal of Ethno pharmacology, 29 (1990) 95-103
Elsevier Scientific Publishers Ireland Ltd.

Anti-Ulcerogenic Activity of Fulvic Acids and 4'-Methoxy-6-Carbomethoxybiphenyl Isolated From Shilajit
Phytotherapy Research, Vol. 2, No. 4, 1988 pp187.