Testosterone Support for Men


Testosterone is a hormone that plays a vital role in men’s health. Low or deficient levels are associated with fatigue, weight gain, muscle and bone mass loss, low libido, depression, impotence, poor memory, and other symptoms.

Research shows that about 40 percent of men 45 and older have low testosterone. There are many reasons why men can have low testosterone. I discuss these causes in depth in my book Healing The Prostate: The Best Holistic Methods To Treat The Prostate And Other Common Male-Related Conditions.

I am often asked if there are any proven supplements that boost blood testosterone levels. There are not many supplements proven to increase men’s testosterone levels. However, a unique extract of the ayurvedic herb known as ashwagandha has been shown in several studies to elevate male testosterone levels.

The ashwagandha extract known as KSM-66 was shown in a recent study to significantly increase blood testosterone levels and sexual well-being. The study involved fifty participants with low sexual desire who were given KSM-66 at a dose of 600 mg or placebo daily. Outcomes were measured with a questionnaire and blood testosterone levels at the beginning and end of the 8-week study. Compared to the placebo, the KSM-66 demonstrated significant benefits.

The ashwagandha extract in this study is the same one I use in our Testosterone Wellness supplement (which has 675 mg of KSM-66 per serving). This supplemental approach gives men the potential to improve their libido and testosterone levels without prescription testosterone.


Dr. Mark Stengler NMD, MS, is a bestselling author in private practice in Encinitas, California, at the Stengler Center for Integrative Medicine. His newsletter, Dr. Stengler’s Health Breakthroughs, is available at www.americasnaturaldoctor.com  His clinic website is www.markstengler.com



Chauhan S, Srivastava MK, Pathak AK. Effect of standardized root extract of ashwagandha (Withania somnifera) on well-being and sexual performance in adult males: A randomized controlled trial. Health Sci Rep. 2022;5(4):e741. Published 2022 Jul 20. doi:10.1002/hsr2.741