Can Women Use Testosterone for Weight Loss? Science & Risks Explained

Evidence Summary

 

Testosterone may help women build muscle and improve energy, but it is not a proven solution for weight loss. While small gains in lean mass are possible, studies indicate that significant fat loss is unlikely unless combined with a balanced diet and regular exercise. Experts caution against using it purely for weight loss due to side effects.

In the evolving world of health and fitness, many women are now exploring new methods to lose weight. One surprising option getting attention is testosterone, a hormone usually linked to men. Some social media influencers talk about it, biohackers support it, and specific clinics offer it. But the big question is: can women use testosterone to help lose weight?

Most people are aware that testosterone plays a crucial role in helping men build muscle and burn fat. But not many realise that women also have small amounts of testosterone. In women, it helps with essential things like maintaining muscle strength, keeping bones healthy, balancing mood, and, yes, helping with metabolism. Because of this, some women are trying testosterone therapy to lose weight, shrink belly fat, or stop muscle loss as they get older.

But what does science say? Is testosterone a safe and innovative way for women to lose weight, or is it a risky idea without strong proof?

This article examines the role of testosterone in women's bodies in detail. We'll discuss how it might impact fat and muscle, examine research studies, and outline the risks and side effects. We'll also compare testosterone to other weight loss methods. Whether you're considering using it, are already using it, or are just curious, this article will help you understand the facts so you can make the best choice for your health.

 

 

What Testosterone Does in a Woman’s Body
- Functions & Ranges

When people hear the word “testosterone,” they usually think of men—deep voices, beards, and muscles. But testosterone isn’t just for men. It also plays an important, though less well-known, role in women’s health. To understand how it might aid in weight loss, we first need to learn about its effects on the female body.

What Is Testosterone? Female Levels, Sources & Roles

Testosterone is a type of sex hormone called androgen. Both men and women have it. Men make most of their testosterone in their testicles. Women make smaller amounts in their ovaries, adrenal glands (near the kidneys), and fat cells. In women, normal levels of testosterone are between 15 and 46 nanograms per decilitre (ng/dL), which is much lower than in men.

Although women have lower testosterone levels, it still plays a crucial role in maintaining overall body health.

Key Functions of Testosterone in Women

Scientists have found that testosterone helps with many things in a woman’s body, such as:

• Muscle Growth and Strength: It helps build and keep lean muscle. More muscle means you burn more energy, even at rest.
  
  
• Strong Bones: Testosterone helps keep bones strong and lowers the chance of getting osteoporosis, especially after menopause.
  
  
• Mood and Brain Function: Low testosterone can lead to feelings of tiredness, sadness, or mental fog.
  
  
• Sex Drive: Testosterone is linked to interest in sex and feeling satisfied. This is one of the main reasons some women take testosterone therapy.
  
  
• Metabolism: It affects how your body stores fat, handles sugar and uses insulin. This is still being studied, as it can be pretty complex.

What Lowers or Raises Female Testosterone Levels?

Testosterone levels can go up and down during a woman’s life. Some things that affect these levels are:

• Age: Testosterone slowly drops as women get older.
  
  
• Menopause: During and after menopause, oestrogen levels fall, and testosterone also gets lower. This can change body shape and energy levels.
  
  
• Health Problems: Some health conditions, like PCOS (Polycystic Ovary Syndrome), can cause high testosterone. Other problems, such as adrenal issues, can also cause low levels.
  
  
• Lifestyle: Bad eating habits, too much stress, not enough sleep, and too much exercise can upset hormone levels, including testosterone.
  

Normal vs Abnormal Testosterone Levels in Women

Maintaining balanced hormone levels is important.

Having too little testosterone can leave you feeling weak, fatigued, and with a low sex drive. On the other hand, too much testosterone may cause side effects such as:

• Acne or oily skin

• Excess hair growth in areas like the face (hirsutism)

• Voice changes, such as a deeper tone

• Irregular or missed periods
  
  

This is why careful monitoring during testosterone therapy is essential — even small changes in dosage or timing can increase the risk of side effects and affect your health.

Testosterone and Weight Loss in Women:
What Studies Show

One big reason some women think about using testosterone therapy is to help change their body shape. They hope it might help them lose fat and build more muscle. Testosterone is a hormone that helps build muscles, and we know it works this way in men. But in women, it works a little differently. Before using testosterone to lose weight, it's essential to understand how it affects fat, muscle, and the body's energy utilisation.

Testosterone & Visceral (Belly) Fat in Women

One big reason some women think about taking testosterone is to change their body shape by losing fat and gaining muscle. Testosterone is known to help men build muscle, but its effects are somewhat different in women. Before using it to lose weight, it's essential to understand how testosterone affects fat and muscle, as well as how your body utilises energy.

Visceral fat is the fat that builds up around your organs, like your liver and stomach. Too much of this fat can lead to serious health problems such as diabetes, heart disease, and other conditions.

In women, the link between testosterone and fat is not simple. One study found that women with higher levels of active testosterone in middle age had more belly fat and were more likely to have insulin problems. This means that increased testosterone levels do not always result in reduced fat and can even lead to the opposite effect if hormone levels are out of balance.

Weight Loss Effects on Female Testosterone (e.g., PCOS)

This works the other way, too; losing weight can change your testosterone levels. For example, women with a condition called PCOS (Polycystic Ovary Syndrome) often have higher levels of testosterone. If they lose weight by eating better, exercising, or undergoing surgery, their testosterone levels typically decrease.

Instead of using testosterone to lose weight, losing weight in healthy ways might help bring hormone levels back to normal.

Testosterone, Muscle Mass & Metabolic Effects in Women

Testosterone helps keep your muscles strong. More muscle means your body burns more energy, even when you’re resting. Some people think testosterone therapy might help older women avoid muscle loss, which can happen after menopause.

A study from Australia showed that women taking testosterone did gain some muscle. But they didn't lose more fat or get stronger than the women who didn't take it. This suggests that testosterone may help maintain muscle. Still, it doesn't cause significant fat loss unless combined with a healthy diet and regular exercise.

Key Takeaways: Testosterone, Fat Loss & Safety

Effect	What Happens to Women	Study Example
More testosterone	Sometimes linked to more belly fat	SWAN Study (2006)
Testosterone therapy	It may help build muscle, but little fat loss	Monash Study (2019)
Losing weight	Can lower testosterone in women with PCOS	NICE Guidelines (NG194)

Testosterone's effect on a woman's body is not simple. It may help build some muscle, but on its own, it won't help you lose a lot of fat. It works best when part of a complete plan that includes diet, exercise, and medical advice, especially for women with specific hormone problems like PCOS.

Testosterone in Women: Effects, Evidence, and Risk Overview

Topic	What Studies Show	Practical Impact	Key Risks
Fat loss	No consistent fat-loss benefit without diet/exercise	Not a weight-loss drug	Lipids, BP, insulin changes
Lean mass	Small increases in lean mass possible	May assist training outcomes	Androgenic effects (acne, hirsutism)
Visceral fat	Higher androgen activity sometimes links to more belly fat	Mixed; dose/individual factors matter	Metabolic risk if imbalanced
Energy/libido	May help in clinically low T	Symptom relief in select cases	Mood changes, sleep issues
Long-term safety	Limited female data	Use specialist oversight only	Unknown long-term CV/cancer risks

Proposed Mechanisms:
How Testosterone Could Influence Weight

Even though there isn’t a lot of strong proof that testosterone helps women lose weight, some scientists have ideas about how it might work. Understanding how testosterone affects fat and muscle can help explain why it’s linked to changes in body shape—especially in men—and whether the same might be true for women.

The main reasons why testosterone could affect weight and body fat in women:

More Muscle and Higher Resting Metabolism

One of testosterone's most well-known functions is helping to build and maintain lean muscle. Muscle burns more calories than fat, even when you're resting.

Having more muscle can:

• Help you burn more calories throughout the day
  
  
• Make your body use sugar more easily (better insulin use)
  
  
• Help manage weight better, especially with exercise like weight training

 

Some studies show that even small amounts of testosterone can help women gain a little muscle. In one study, women after menopause who used testosterone patches gained some muscle over 6 to 12 months, but they didn’t lose much fat.

It Affects Fat in the Body

Testosterone can change the way your body stores and uses fat in two ways:

• Burning fat (lipolysis): Testosterone can help break down fat for energy. This happens more in men, but it can also occur in women.
  
  
• Where fat goes: In women, especially around menopause, more testosterone can lead to more belly fat (called visceral fat).

So, while testosterone might help burn fat, too much of it can cause more fat to build up in the tummy area. One big study (SWAN) found that women with higher testosterone had more belly fat, which can lead to health problems.

It Affects Insulin and Blood Sugar

Insulin is a hormone that helps control sugar in your blood. If your body doesn’t use insulin well, it stores more fat, especially around your belly.

Testosterone affects insulin in different ways:

• In men, low testosterone levels often lead to insulin problems.
  
  
• In women, the effect depends on how much testosterone is in the body.

 

For example, women with PCOS (a hormone condition) often have high testosterone and trouble with insulin. But women with very low testosterone, like after menopause, might also have insulin issues.

Some small studies suggest that maintaining balanced testosterone levels may help certain women manage their insulin more effectively. But there’s not enough proof to say that testosterone should be used to fix this.

SHBG and Free Testosterone

HBG (Sex Hormone-Binding Globulin) is a protein that carries hormones like oestrogen and testosterone in your blood. It controls how much testosterone is “free” and active.

• Low SHBG = more free testosterone, which can affect fat storage
  
  
• High SHBG = better hormone balance and healthier metabolism

Testosterone therapy can lower SHBG, which means more active testosterone. This might help with things like energy and sex drive, but it could also cause problems like more belly fat or insulin issues if the balance gets thrown off.

Mood, Motivation, and Energy

Even though this doesn't affect fat directly, testosterone can change how you feel.

Some women say it gives them the following:

• More motivation to exercise
  
  
• Better energy
  
  
• Less tiredness or brain fog

This usually happens in women with low testosterone, and it's not the same for everyone. However, feeling better can help some people stick to healthy habits, such as exercising and eating well, which are essential for achieving and maintaining a healthy weight.

Testosterone Risks & Side Effects for Women

Testosterone therapy can help some women in particular cases, like improving sex drive or helping keep muscle, but it also comes with risks. If taken in the wrong amount or without proper medical advice, it can cause side effects. Some of these may not go away, even if you stop taking the hormone.

One of the main reasons testosterone is not approved for general use in women in the UK and other countries is due to these safety concerns.

This section explains the principal risks and side effects women need to know about before thinking about testosterone therapy.

Masculine (Androgenic) Side Effects

One of the biggest concerns is that testosterone can cause changes that make a woman’s body look or act more “masculine.” This is more likely to happen with high doses or when using unregulated products.

Possible side effects include:

• Pimples and oily skin
  
  
• Hair grows in places like the face or chest.
  
  
• Hair thinning or bald patches on the scalp
  
  
• Voice becoming deeper (this may be permanent)
  
  
• Growth of the clitoris
  
  
• Irregular or missing periods

 

These problems happen more with injected or custom-mixed testosterone products, which are harder to control. The British Menopause Society says using low-dose, skin-based testosterone under a doctor’s care is safer and lowers the risk of these side effects.

Heart and Metabolism Risks

We know a lot about how testosterone affects men’s hearts, but less is known about how it affects women.

Some possible risks include:

• Bad cholesterol is going up, and good cholesterol is going down
  
  
• Higher blood pressure (especially in women who already have it)
  
  
• Trouble with blood sugar, which can lead to weight gain or diabetes

 

The International Menopause Society says we still don’t know enough about how safe testosterone is for women’s hearts over a long time. The US FDA (Food and Drug Administration) has even added warnings to testosterone products about heart risks, but this was based on male studies.

Mental Health and Mood Changes

Some women feel more energy, think more clearly, or feel happier when they use testosterone. But not everyone feels this way. For some women, it can cause the opposite. They might feel more tired, grumpy, or have mood swings.

These are possible emotional side effects:

• More anger or irritability
  
  
• Feeling anxious or restless
  
  
• Problems sleeping

 

Hormones have a profound impact on our emotional well-being. If you take testosterone in the wrong way, it could make emotions more complicated to control.

Liver and Blood Fat Effects

Taking testosterone by mouth (which is rare in the UK) can be hard on your liver. Even gel or injection forms can still change:

• Liver function
  
  
• Blood fat levels
  
  
• Inflammation in the body

 

Doctors typically perform regular blood tests to detect these changes. This is why only trained doctors, like hormone or menopause specialists, should manage testosterone treatment.

Unknown Long-Term Risks

One of the biggest concerns with testosterone therapy in women is the lack of research on its long-term safety. Most studies have followed women for less than a year, which means we still don’t know the full risks over time.

Potential issues that need more research include:

• Heart attack or stroke

• Breast cancer

• Blood clots

• Effects on the uterus and ovaries

Because of these uncertainties, health experts in Europe and the UK recommend prescribing testosterone only for women with low sexual desire—not for weight loss, anti-aging, or general wellness.

 

Is Testosterone Safe or Recommended for Women’s Weight Loss?

Right now, the answer is no.

While testosterone can help some women with very low levels, it's not meant to be used to lose fat or change your body shape. The risks are high, particularly when used without a doctor's guidance or with products that have not undergone adequate testing.

No major health group in the UK, Europe, or North America says testosterone should be used for weight loss in women.

Safety Checklist if Considering Testosterone Therapy

If you and your doctor decide to try testosterone, be sure to stay safe.

Here are important tips:

• Only use trusted, doctor-approved products (like Androfeme in some countries)
  
  
• Get regular blood tests to check hormone levels, liver, and heart health
  
  
• Don’t use custom-mixed products unless there are no other choices
  
  
• Never go above the normal female testosterone range (15–46 ng/dL)

 

Testosterone can be helpful for some women, but it’s not a safe or smart choice for weight loss. The risks can be severe. If you want to lose fat and improve your body, there are safer and more effective ways to achieve this.

 

Conclusion: Safer, Evidence-Based Paths to Weight Loss

Some people think that taking testosterone can help women lose weight, but the truth is more complicated. Testosterone is a hormone that helps regulate functions such as muscle growth, energy levels, and mood. While men have more of it, women also produce small amounts. Some women believe that adding more testosterone might help them burn fat, but science doesn’t fully support that idea.

Studies show that testosterone might help build a little more muscle in some women, but it doesn't lead to significant weight loss. Too much testosterone can cause problems like acne, unwanted hair growth, mood swings, and even raise your risk for heart problems. That's why doctors don't usually recommend testosterone for weight loss unless it's being used to treat a medical issue like low sex drive after menopause.

If you're struggling with weight, there are better and safer ways to get healthy, like eating well, exercising, sleeping enough, and managing stress. Sometimes, hormones do play a role, and it's okay to ask questions. But it's essential to get help from someone who knows what they're doing.

If you’re unsure about your hormones or want to talk to a doctor, Mobi Doctor can help. They have trusted medical experts who can check your symptoms, do tests if needed, and give you advice that's right for you. It's quick, private, and easy to book online. Don't guess; get the right help today!