Yesterday, I told you why men should be concerned when their testosterone levels begin to decline. Here’s another reason: Low levels of testosterone can cause depression.

If you are a man and you are depressed, one therapy outperforms all the rest: natural testosterone. It works faster and better than antidepressant drugs. And if used appropriately, it lacks the side effects – like impotence and weakness – of those drugs. On top of that, testosterone improves potency and strength.

A study published in the Journal of Clinical and Experimental Endocrinology and Metabolism concluded that depression in men aged 50 to 89 rose in direct correlation to a fall in testosterone. And in a recent Harvard study, doctors found that about 40 percent of the depressed men they interviewed had low testosterone levels. (Even the researchers were surprised by the results.) Sixty percent of those who used testosterone to treat their depression showed an improvement. This rate beats that of every antidepressant drug.

If you are feeling moody, sad, or irritable, it is important to have your testosterone levels checked. Once you know your levels, you can implement a plan to raise them and feel better.

I’ve been restoring testosterone in my male patients for years – and I have seen some dramatic changes. I use several methods, including testosterone gels, injections, and precursor supplements (which help the body make its own testosterone).

These treatments need a doctor’s prescription, but you can get the ball rolling by taking the herbal supplement I mentioned yesterday.

[Ed. Note: You can find more natural ways to increase testosterone levels in Dr. Sears’ book, 12 Secrets to Virility.]

Al Sears has written six books and more than 500 articles in the fields of alternative medicine, anti-aging and nutritional supplementation. He enjoys a worldwide readership of millions spread over 123 countries and has appeared on more than 50 national radio programs, ABC News, CNN and ESPN. In The Doctor’s Heart Cure, Dr. Sears exposes the real causes of the modern epidemic of heart disease with practical how-to advice for building real heart strength and resistance to disease without drugs. It is available in nine languages and remains a bestseller three years after its publication. His 12 Secrets to Virility sheds light on the huge environmental and nutritional problems with virility in our modern world and gives men a step-by step guide for maintaining health, strength and masculinity as they age. It became a bestseller during its first month of release. His latest book Your Best Health Under the Sun addresses the myths of the sun’s dangers and gives readers an action plan for restoring this important natural resource for better mood, strength, energy and nutritional health.Dr. Sears is board certified as a Clinical Nutrition Specialist and was appointed to the international panel of experts at Health Sciences Institute, (HSI) a worldwide information service for alternative nutritional therapies. A master gardener and herbalist, Dr. Sears maintains an herbal apothecary of more than 250 organic herbs used for research, education and treatments. Dr. Sears is the founder and director of The Wellness Research Foundation, conducting original research evaluating natural alternatives to pharmaceutical therapies.Dr. Sears is a member of the American Academy of Anti-Aging Medicine and is board certified in Anti-Aging Medicine. As a pioneer in this new field of medicine, he is an avid researcher and sought-after lecturer to thousands of doctors and health enthusiasts. He is a member of the American College of Sports Medicine and the National Youth Sports Coaches Association. As well as being a sports and fitness coach and a lifelong advocate of exercise programs, Dr. Sears is an ACE-certified fitness trainer. He maintains his integrative clinic and research center in Florida, where he has developed novel exercise and nutritional systems transforming the lives of more than 20,000 patients.