astragalus revived T cells

Reactivate your T cells to increase immunity

They say you can’t strengthen your own immunity.

And it’s true white blood cells decline with age. Your thymus generates fewer T cells, and your remaining white blood cells become less active.

But here’s the good news… That decline is not inevitable. You can reprogram and revive your white blood cells. Clinical trials prove it.

New Proof You Can Reboot Your Own Immunity

One of the first compounds found to rejuvenate white blood cells was TA-65, an extract from astragalus root.

Researchers found “striking indications” astragalus revived senescent T cells, including “‘age-reversal’ effects” of up to 20 years of immune-system aging.1

In 2010, I became the first U.S. doctor licensed to administer TA-65 to patients. I’ve seen what it can do first-hand.

Astragalus enhances the body’s natural killer (NK) cells2 and triggers “proliferation and differentiation” of the bone marrow stem cells which develop into white blood cells.3

So the verdict is in. Your white blood cells CAN be revitalized.

Supercharge Your Immune T Cells in 3 Easy Steps

Here are three ways to reactivate your white blood cells:

  1. Supplement with C root. The polysaccharides in astragalus have an amazing ability to heal and repair damaged immune cells.4 One study found astragalus made white blood cells up to 7 times stronger in certain respects.5 Researchers also found it offered an “effective anti-tumor function” by increasing interferon and natural killer cell activity.6 I recommend 500 mg of concentrated astragalus extract three times a day.
  2. Eat more like your ancestors did. Some modern-day, sugar-laden foods actually harm your immunity. Too much sugar can temporarily impair your immune response by over 20 percent.7 My advice: Replace sugar and carbs with a healthy cut of grass-fed beef. It’s high-quality protein with lots of the B vitamins essential to your immunity.8
  3. Exercise smarter, NOT longer. I advise patients to stop extended endurance exercises right away. Going overboard like that can actually cause “transient immune dysfunction.”9 Instead, try brief, focused sessions that progressively challenge your heart and lungs. That’s the type of workout I offer daily at the Sears Institute for Anti-Aging Medicine, and you can see a free workout by clicking here. In fact, why not follow along?

To Your Good Health,

Al Sears, MD, CNS

1. Harley, C. B., Liu, W., Flom, P. L., & Raffaele, J. M. (2013). A Natural Product Telomerase Activator as Part of a Health Maintenance Program: Metabolic and Cardiovascular Response. Rejuvenation Research, 16(5), 386–395.
2. Chen, X., Chen, X., Gao, J., Yang, H., Duan, Y., Feng, Y., … Chang, J. (2019). Astragaloside III Enhances Anti-Tumor Response of NK Cells by Elevating NKG2D and IFN-γ. Frontiers in Pharmacology, 10.
3. Li, Q., Xing, W., Gong, X., Wang, Y., & Sun, H. (2019). Astragalus polysaccharide promotes proliferation and osteogenic differentiation of bone mesenchymal stem cells by down-regulation of microRNA-152. Biomedicine & Pharmacotherapy, 115, 108927.
4. Han, J., Guo, D., Sun, X.-Y., Wang, J.-M., Ouyang, J.-M., & Gui, B.-S. (2019). Repair Effects of Astragalus Polysaccharides with Different Molecular Weights on Oxidatively Damaged HK-2 Cells. Scientific Reports, 9(1), 9871.
5. Fauce, S. R., Jamieson, B. D., Chin, A. C., Mitsuyasu, R. T., Parish, S. T., Ng, H. L., … Effros, R. B. (2008). Telomerase-Based Pharmacologic Enhancement of Antiviral Function of Human CD8+ T Lymphocytes. Journal of Immunology(Baltimore, Md. : 1950) , 181(10), 7400–7406. Retrieved from
6. Chen, X. (2013, Spring 8). Astragaloside III Enhances Anti-Tumor Response of NK Cells by Elevating NKG2D and IFN-γ. Retrieved December 17, 12AD, from
7. Shodja, M. M., Knutsen, R., Cao, J., Oda, K., Beeson, L. E., Fraser, G. E., & Knutsen, S. (2017). Effects of glycosylated hemoglobin levels on neutrophilic phagocytic functions. Jacobs Journal of Diabetes and Endocrinology , 8(2), 9–16.
8. Meydani, S. N., Ribaya-Mercado, J. D., Russell, R. M., Sahyoun, N., Morrow, F. D., & Gershoff, S. N. (1991). Vitamin B-6 deficiency impairs interleukin 2 production and lymphocyte proliferation in elderly adults. The American Journal of Clinical Nutrition , 53(5), 1275–1280.
9. Nieman, D. C., & Wentz, L. M. (2019). The compelling link between physical activity and the body’s defense system. Journal of Sport and Health Science , 8(3), 201–217.