Grandson watching grandfather sleeping
1 / 10

Drop in Energy

Fatigue is a common effect of low testosterone. You might feel like you just don't have the energy that you're used to. Or you might be incredibly tired.

But many other things can sap your energy, too, including normal aging and depression.

Getting enough sleep may help raise your energy levels. Try to get at least 7 to 8 hours each night.

See your doctor for more help with unusual fatigue.

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Ignored woman lying in bed with husband
2 / 10

Changes in Sex Life

A drop in your sex drive can be due to low T. So can erectile dysfunction.

Low testosterone alone is rarely the only reason for weaker and fewer erections. Other medical problems can be to blame, such as heart disease or diabetes.

Check with your doctor. If you have low testosterone levels, your sex drive may get better with treatment.

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chef leaning on counter
3 / 10

Fuzzy Thinking

Low testosterone can hurt your mental focus and memory. You may forget what you planned to do and have trouble concentrating.  This happens more often when testosterone levels are extremely low.

You can also feel sadness and other symptoms of depression.  To help, take steps to ease stress. Try meditation, yoga, exercise, or massage. T

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man looking in bathroom mirror
4 / 10

Changes in Mood

Low testosterone can get you down -- a little or to the point of depression.

Some men really see a change in personality. Nothing seems to make them happy anymore and they don't want to do things they used to enjoy.

When testosterone levels are back to normal, men often say they feel like themselves again.

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man lifting free weight
5 / 10

Muscle Changes

Because testosterone helps build muscle, when it gets low, so does your muscle mass and strength. When you work out you don't see the results that you would normally expect from exercise.

Regular exercise can help boost your testosterone levels. Be sure to work large groups of muscles when you exercise and do some weight lifting, too.

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Overweight man in swimming pool
6 / 10

More Body Fat

Not only can you lose muscles with low testosterone, you can also gain fat. If you're not building muscle with the calories you take in and the physical activity you do, then your body turns the calories into fat.

Eat a healthy diet. When you start to lose weight and extra body fat from dieting, you may lose some muscle. If you are overweight or obese, your body may make more testosterone as you lose weight. This will help you gain lost muscle mass.

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Mature man combing his hair
7 / 10

Thinning Body Hair

Low testosterone can cause you to lose some facial hair, pubic hair, and hair on your arms and lower legs. But it doesn't usually affect the hair on your head.

But one thing you should know. There's a link between testosterone therapy and male-pattern balding. Your doctor can talk to you about any side effects of testosterone treatment.

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runner stops to catch his breath
8 / 10

Loss of Bone Mass

Low testosterone has been linked to osteoporosis, a disease that weakens bones. But there are other causes of osteoporosis too, so check with your doctor.

To keep your bones healthy, don't smoke, and cut back on alcohol. Also get regular exercise, including weight-bearing exercise.

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Man yawning at kitchen table
9 / 10

Trouble Sleeping

When your testosterone levels are low, you might have trouble with insomnia and restlessness at night.

To help get a good night's sleep, have a relaxing bedtime routine. Go to bed and wake up at the same time, even on weekends. Make your bedroom dark, quiet, and comfortable, and only use it for sleep and sex.

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Three business men listening
10 / 10

Problems on the Job

Many of the effects of low testosterone -- focus problems, mood issues, and low energy -- can make it hard to stay on top of your game at work.

If your work or home life has changed dramatically for the worse, a full medical checkup might help find the cause. A blood test can show whether you have low testosterone levels.

If you have low T, healthy lifestyle changes are important, along with any testosterone therapy your doctor might suggest.

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Sources | Medically Reviewed on 8/29/2017 Reviewed by Minesh Khatri, MD on August 29, 2017

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SOURCES:

American Association of Clinical Endocrinologists: "Medical Guidelines for Clinical Practice for the Evaluation and Treatment of Hypogonadism in Adult Male Patients—2002 update."

Beauchet, O. European Journal of Endocrinology, 2006.

Columbia University, Go Ask Alice: "Does exercise (i.e. weight lifting) increase testosterone levels?"

Dandona, P. International Journal of Clinical Practice, 2010.

Tobias S. Kohler MD, MPH, urologist, associate professor of surgery, Southern Illinois University School of Medicine.

Medscape: "Low Testosterone."

Mehta, P. Hormones and Behavior, November 2010.

National Sleep Foundation: "Healthy Sleep Tips."

University of Virginia Health System: "Impotence."

Urology Care Foundation: "Low Testosterone (Hypogonadism)."

Reviewed by Minesh Khatri, MD on August 29, 2017

This tool does not provide medical advice. See additional information.

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.