Testosterone and Diabetes

When you think about diabetes, blood sugar and insulin resistance probably come to mind first. 

But testosterone plays a bigger role than most people realize. 

Studies show men with type 2 diabetes are about twice as likely to have low testosterone, and low testosterone itself may raise the risk of developing diabetes. 

The link isn’t one-sided, and research has shown mixed results on whether testosterone therapy helps. 

Here’s what the science says, how it affects both men and women, and what you can do about it.

What Is Testosterone and Why Does It Matter?

Testosterone isn’t just about muscle or sex drive, it’s a hormone that impacts metabolism, energy, fat distribution, and mood. 

Both men and women produce it, though men make much more. 

One of its lesser-known jobs is interacting with insulin, the hormone that regulates blood sugar.

 When testosterone is low, insulin resistance often rises. 

That’s a major reason low testosterone and diabetes are so often found together.

How Diabetes Lowers Testosterone Levels

Research shows about 25–40% of men with type 2 diabetes have low testosterone. 

Why? 

A few factors play a role:

• Obesity increases aromatase activity, which converts testosterone into estrogen.
  
• Insulin resistance interferes with the brain’s signal to make testosterone.
  
• Chronic inflammation linked with diabetes lowers hormone production.
  
• Low SHBG (sex hormone–binding globulin) reduces “free” testosterone, the active form your body uses.
  

This creates a frustrating cycle: diabetes lowers testosterone, and low testosterone makes diabetes harder to manage.

What the Research Shows About Testosterone and Diabetes

The evidence isn’t all pointing in one direction.

• A 2017 meta-analysis found that higher testosterone levels are linked with a significantly lower risk of developing type 2 diabetes.
  
• A 2024 JAMA study, however, reported that testosterone replacement therapy (TRT) didn’t meaningfully improve blood sugar control in men with diabetes or prediabetes.
  
• In contrast, an 11-year University at Buffalo study found that about one-third of men on long-term TRT actually went into diabetes remission.
  

The bottom line: testosterone clearly plays a role, but not everyone responds to therapy the same way.

Testosterone Replacement Therapy (TRT) and Type 2 Diabetes

TRT can improve common low-T symptoms like low libido, fatigue, and muscle loss. 

Some men also see improvements in insulin sensitivity, which may help with blood sugar control. 

But TRT is not a one-size-fits-all solution.

Potential benefits

• Increased energy and mood stability
  
• Improved lean muscle mass
  
• Possible reduction in insulin resistance

Risks and limitations

• Some studies show no direct improvement in blood sugar
  
• Possible cardiovascular strain
  
• Fertility suppression and prostate health concerns
  

Because of these risks, TRT should always be personalized and monitored by a healthcare provider.

Testosterone and Diabetes in Women

While most research focuses on men, testosterone also matters for women. 

Women with diabetes may experience low testosterone, which contributes to fatigue, reduced strength, and low libido. 

But the opposite problem exists too. 

Women with PCOS (polycystic ovary syndrome) often have high testosterone levels, and they face a higher risk of insulin resistance and type 2 diabetes. 

This shows the testosterone-diabetes relationship isn’t only about “low,” in women, both extremes matter.

Lifestyle, Weight Loss, and New Treatments

The good news? 

You’re not limited to medication. 

Lifestyle shifts can naturally improve both testosterone and diabetes.

• Weight loss: Losing fat reduces aromatase activity, boosting testosterone while improving insulin sensitivity.
  
• Exercise: Strength training is one of the best natural ways to raise testosterone and improve blood sugar control.
  
• Sleep: Poor sleep lowers testosterone and worsens insulin resistance.
  
• Nutrition: Balanced eating patterns that reduce processed sugar and support healthy weight also help hormones.
  

And now, new peptide therapies like GLP-1 agonists (semaglutide, tirzepatide) are showing promise. 

These drugs help with weight loss, which indirectly raises testosterone and improves diabetes outcomes. 

Some studies suggest they may help restore hormone balance in overweight men.

When to See a Doctor

If you have type 2 diabetes and notice symptoms like fatigue, low sex drive, mood swings, or loss of muscle mass, it’s worth asking about your testosterone levels. 

A simple blood test can give answers, and from there, your provider may suggest lifestyle changes, weight loss support, or possibly TRT.

Key Takeaways

• Low testosterone is common in men with type 2 diabetes and also affects women differently.
  
• Studies show mixed results: TRT helps some men, while others see little change in blood sugar.
  
• Lifestyle changes, especially weight loss and exercise, improve both testosterone and diabetes.
  
• Newer treatments like GLP-1 medications may support hormone balance while managing diabetes.

Conclusion: Testosterone and Diabetes

Testosterone and diabetes are deeply connected, but the relationship is complex. 

Diabetes can lower testosterone, and low testosterone can make diabetes harder to control. 

While TRT can help certain men, lifestyle strategies and newer treatments may be just as important.

At VYVE Wellness, we focus on personalized hormone and metabolic health care. 

If you’re dealing with diabetes, low energy, or signs of low testosterone, our team can help you explore safe, effective options tailored to your needs.

FAQs: Testosterone and Diabetes

Is testosterone good for diabetics?
Testosterone can help some men with diabetes by improving energy, muscle mass, and insulin sensitivity, but studies show mixed results on whether it directly improves blood sugar. It should only be considered under medical supervision.

Can diabetes cause high testosterone?
In most men, diabetes is linked to low testosterone, not high. However, in women, certain conditions like PCOS can cause both high testosterone and a higher risk of developing diabetes.

Does quitting sugar increase testosterone?
Cutting back on processed sugar can improve insulin sensitivity and support weight loss, which may help raise testosterone naturally. While quitting sugar alone won’t cause a big spike, it’s part of a healthier lifestyle that supports hormone balance.

What are signs of low testosterone in men?
Common signs include low sex drive, fatigue, mood swings, loss of muscle mass, increased belly fat, and difficulty concentrating. If these symptoms show up along with type 2 diabetes, it may be worth checking testosterone levels.

Does low testosterone cause weight gain?
Yes. Low testosterone makes it harder to build muscle and easier to gain fat, especially around the midsection. This weight gain can also worsen insulin resistance, creating a cycle that makes diabetes management more difficult.

What is HRT vs TRT?
HRT, or hormone replacement therapy, refers to replacing or balancing a range of hormones, often used in both men and women. TRT, or testosterone replacement therapy, is a specific type of HRT focused only on restoring testosterone levels in people who are deficient.