TRT in the UK

Low Testosterone and Weight Gain

Low Testosterone and Weight Gain

By Mike Kocsis | 7 minutes read | Last updated: June 18, 2024
  •   Categories:  
  • Medically Reviewed by Dr. George Touliatos

    Evidence Based Research

    Testosterone is a complex hormone that plays several roles in the body. Having too much or too little of it can influence your health in various ways. Millions of men around the world experience low testosterone (or low T) that causes erectile dysfunction, low sex drive, and fatigue. Another important factor that is linked to low T is weight gain. Low T and weight gain set off a vicious cycle. It means low T promotes weight gain, and weight gain promotes low T. That is why men with low T do not find their regular exercises as effective and overweight men experience hormonal imbalance.

    Want to learn more about the connection between low T and weight gain? Keep reading to learn how they are linked and what you can do to boost your testosterone levels.

    Take Hormone Quiz


    How does low T cause weight gain?

    It may not be easy to find a direct connection between these two things, but when you observe signs of low T, it makes more sense why this condition increases your body weight.

    Low testosterone levels can make you gain weight in the following ways.

    Loss of muscle mass

    Testosterone contributes to the development of muscle mass. When you do not have sufficient testosterone, it becomes hard for your body to build and maintain muscles. Your muscles play an important role in maintaining body weight. The more muscles you have, the more calories you will burn to make energy. This way, an energy balance is maintained.

    In men with low testosterone levels, lean muscle mass declines. As a result, fewer calories are burned, and stubborn fats start accumulating in the body, leading to weight gain.

    Fat accumulation

    Fat storage tissues were once believed to play a role only in fat storage, but now they are known to play other roles as well, such as sending signals and secreting chemicals. They secrete an enzyme called aromatase, which is involved in the biosynthesis of estrogen (a sex steroid hormone). It does this by converting testosterone into estrogen, creating a testosterone-estrogen imbalance.

    Low T also affects the fat distribution system. More fats are stored in the abdomen and thighs, which increases the risk of heart disease, type 2 diabetes, and obesity.

    Lack of motivation or energy

    Low testosterone not only causes physical changes but also affects your emotional and mental health. Activities you once enjoyed to stay fit and healthy no longer interest you. You start finding excuses to avoid going to the gym or exercising. This leads to physical inactivity, which eventually results in weight gain.



    How does being overweight increase the risk of low T?

    Being overweight can influence your health in numerous ways. It increases the risk of serious health conditions like high blood pressure, heart stroke, and low T. Data shows that 40% of overweight men who don’t have diabetes and 50% of overweight men with diabetes have low T.

    Obesity increases low T risk in the following ways.

    More production of aromatase

    As mentioned earlier, fat cells release aromatase enzymes. It means the more fat cells you have, the higher your aromatase levels will be. Aromatase normally converts a small amount of serum testosterone into estrogen. But when you have high aromatase levels, more testosterone is converted into estrogen, significantly reducing your serum testosterone levels.

    Less production of sex hormone-binding globulin (SHBG)

    SHBG is a protein that carries sex hormones, including testosterone, in the blood. Studies show its concentration is inversely related to weight. It means an increase in weight reduces levels of SHBG in the blood, which reduces free testosterone levels.



    Natural ways to lose weight and raise testosterone levels

    If your low T is due to obesity, you should use natural ways to reduce weight and increase testosterone levels. Here are the proven tips that will help you get rid of those extra fats and improve your physique.


    Become more physically active

    Make different forms of physical activities a part of your lifestyle because there are numerous advantages to being more physically active. Exercise for at least 60 minutes a day. If you feel fatigued due to low T, divide 60 minutes into three 20 minutes intervals and exercise three times a day for 20 minutes each. 

    Limit the sugar intake

    Increased sugar, particularly simple sugar (glucose), consumption may reduce your serum testosterone levels. Hence, you should avoid eating processed foods like pizza, pasta, cakes, etc. Replace them with foods having complex carbs, such as whole grains.

    Try strength training

    Strength training is very effective in increasing muscle strength and endurance. It can help you burn calories and gain lean muscle mass. 

    Start with lifting weights. Do it 3 to 4 times a week for 15 minutes per day.

    Avoid excessive consumption of alcohol

    Excessive drinking impacts different aspects of health; hence, you should limit your alcohol intake. It causes low testosterone production by promoting its conversion to estrogen. It also decreases NAD+ synthesis, which is a coenzyme required to produce testosterone. 

    Get plenty of sleep

    The majority of testosterone in men is produced during sleep. So, this is obvious, when you do not get enough sleep or have fragmented sleep, your testosterone levels decline drastically. Conditions like sleep apnea also interfere with testosterone production.

    According to the instructions published in the Sleep Health journal, adults should sleep for at least 7 hours per night. Sleeping less than the mentioned duration can lower your testosterone levels.



    How does testosterone replacement therapy (TRT) help?

    Testosterone replacement therapy (TRT) helps men with low T restore their testosterone levels and get rid of the associated symptoms.

    It is effective in reducing weight and waist circumference in the following ways.

    • It promotes the production of lean muscles. It does this by stimulating protein synthesis and preventing muscle degeneration. When you gain more muscle, calories burn at a faster rate because muscles now require more energy to operate. 
    • Correcting the levels of testosterone increases the rate of metabolism, which helps burn calories fast.
    • Testosterone improves fat distribution in the body.
    • Diminishes fatigue and increases motivation, helping you become more active and improve your physique.


    Scientific studies on TRT

    If above mentioned natural ways of reducing weight are not working, and you believe your weight gain is due to low T, starting TRT might be the right solution for you.

    Some studies also prove that TRT causes weight loss in overweight men with low T. In a 2016 study, researchers divided participants into two groups. Both groups had reduced-caloric diets for a certain time duration. During this period, one group received a placebo while the other received testosterone injections.

    Both groups lost weight. However, the first group lost weight due to fat loss as well as muscle loss. In contrast, the second group lost only fat and regained muscle.

    There are many other possible advantages of TRT. Some of these are:

    • Improvement in mood and the sense of well-being
    • High energy levels
    • Improvement in bone density and health
    • Increase in sex drive

    Remember that TRT also has some side effects, such as acne, an increase in breast size, and a high red blood cell count. Discuss these effects with your healthcare provider to make the most out of this treatment.

    Some people are at a high risk of developing serious conditions like prostate cancer or heart disease. That is why doctors do not prescribe this procedure to all. They conduct a careful examination to fully evaluate whether or not TRT is safe for a patient.




    Is testosterone gel effective?

    You should apply testosterone gels to the skin like any other topical gel or cream. They are as effective as testosterone injections and other TRT forms. They can improve your mood, energy levels, sexual function, and more.

    Where do you apply testosterone gel for maximum absorption?

    The best sites for a testosterone gel are the abdomen, upper arms, and shoulders. Your skin absorbs gels better when it’s wet so you should apply it after having a bath or shower. 

    How long does it take for testosterone gel to absorb?

    It depends on the type of product you have. However, most of the testosterone gels get absorbed in the skin during the first 4 hours.


    Book Free Consultation



    Low testosterone and weight gain create a vicious cycle. Low T can cause weight gain, and weight gain can lead to low T. You should always try to maintain their physique to prevent serious health consequences.

    Men with low T should look into TRT to improve their symptoms and eliminate extra body fat. Testosterone can help them gain lean muscle mass, burn more calories, and promote body fat distribution.


    References/Scientific studies/Bibliography/Further reading 

    Gray, J.M., Nunez, A.A., Siegel, L.I. and Wade, G.N., 1979. Effects of testosterone on body weight and adipose tissue: role of aromatization. Physiology & Behavior23(3), pp.465-469.

    Diaz-Arjonilla, M., Schwarcz, M., Swerdloff, R.S. and Wang, C., 2009. Obesity, low testosterone levels and erectile dysfunction. International journal of impotence research21(2), pp.89-98.

    Sebo, Z.L. and Rodeheffer, M.S., 2021. Testosterone metabolites differentially regulate obesogenesis and fat distribution. Molecular metabolism44, p.101141.

    Was this article helpful?

    Evidence Based Research

    This article has been researched and written based on scientific evidence and fact sheets that have then been crossed checked by our team of doctors and subject matter experts.

    References, sources and studies used alongside our own in-house research have been cited below, most of which contain external clickable links to reviewed scientific paper that contain date stamped evidence.

    Our team of healthcare experts and GMC registered doctors are licensed to UK GMC standards. We strive to provide you with the latest evidence based, researched articles that are unbiased, honest and provide you with accurate insights, statistics and helpful information on the discussed topic to ensure you gain a better understanding of the subject. You can read more about our Editorial Process by clicking here.

    We value your feedback on our articles, if you have a well-researched paper you would like to share with us please contact us.

    Quick Low Testosterone Test

    If you know your total testosterone reading from a previous blood test input the results to the left above to see if your testosterone levels are normal.

    Check your testosterone

    Tick all that apply:

    I have the following symptoms:

    Testosterone conversion tool
    Order testosterone blood tests

    Low Testosterone Levels

    You may have low testosterone depending on the symptoms you have, please contact us to find out how we can help.

    Take our ADAMS low testosterone questionnaire.

    Please Retry

    The Total Testosterone Level You Entered Is Incorrect. Figure Must be in nmol/L you can use our converter here.

    Take our ADAMS low testosterone questionnaire.

    Normal Testosterone Levels

    Your testosterone levels appear to be in the normal range.

    Take our ADAMS low testosterone questionnaire.


    You must be over 38, have had your ovaries removed or have suffered with premature menopause to warrant further hormone tests.

    Take our ADAMS low testosterone questionnaire.

    Further investigation needed

    Please contact us to discuss your hormones, we need your total testosterone levels to validate your hormone deficiency. You can order a blood test here.

    Take our ADAMS low testosterone questionnaire.

    Low Testosterone Levels

    You may have low testosterone depending on the symptoms you have, please contact us to find out how we can help.

    Take our ADAMS low testosterone questionnaire.

    High Testosterone Levels

    You appear to have higher than normal testosterone levels, please contact us for further investigation.

    Take our ADAMS low testosterone questionnaire.

    Normal Testosterone Levels

    You appear to have normal testosterone levels. Contact us if you have any concerns.

    Take our ADAMS low testosterone questionnaire.

    About the Author: Mike Kocsis

    Mike KocsisMike Kocsis has an MBA with a focus on healthcare administration and is an entrepreneur and medical case manager for Balance My Hormones Ltd which offers medical services in the UK and Europe. Mike has over 20 years of experience in the healthcare sector, much of that working with people who have hormone imbalances. Mike has appeared on podcasts and radio and is an expert speaker on the subject of hormone imbalance. He specialises in Testosterone Replacement Therapy (TRT) and Hormone Replacement Therapy (HRT) and has helped thousands of people suffering from hormone imbalances recover and regain control of their lives. You can follow him on LinkedIn and on the Balance My Hormones YouTube Channel.

    Learn More About Us

    Last update: June 18th, 2024
    Hormone Imbalance: Causes, Symptoms and Treatment
    Hormone Imbalance: Causes, Symptoms and Treatment
    26 March, 2024, by Mike Kocsis

    Hormones are small chemical messengers that perform many big roles in the body. To ensure optimal functioning, they must remain balanced within the body. Having too much or too little of a hormone can disrupt normal body functioning, leading to a variety of symptoms and health issues. Hormone imbalance refers to a condition in which […]

    Read Article
    Do Women Have More Oestrogen Than Testosterone?
    Do Women Have More Oestrogen Than Testosterone?
    13 March, 2024, by Mike Kocsis

    Both oestrogen and testosterone are primary sex hormones that play many crucial roles in the body. Testosterone is mainly associated with male physiology, while oestrogen is predominantly found in females. However, these hormones exist in both sexes, albeit in different concentrations. Proper balance between these hormones is essential for the overall well-being of a person. […]

    Read Article
    The Link Between Female Hair Loss and Hormones
    The Link Between Female Hair Loss and Hormones
    28 February, 2024, by Mike Kocsis

    If you are shedding more than 100 hairs daily and have bald spots, you probably have hair loss and need to see a doctor as soon as possible. There are different causes of female hair loss, and one of them is hormonal imbalance. In this article, you will learn about female hair loss and how […]

    Read Article

    Get In Touch

    File(s) size limit is 20MB.

    Get Started Today
    Evidence based
    research backed
    hormone optimization

    Balance My Hormones helps customers restore their hormones to optimal levels through bespoke TRT and HRT treatment plans. We use modern American treatment methods and have over 25 years of experience in hormonal health which is backed up by our very own GPhC pharmacy.

    jQuery('.faq-item h4 a').click(function(e){var i=jQuery(this).attr("data-id");var opened=jQuery(".open").attr("data-id");if(i==opened){jQuery('.faq-item .answer').hide();jQuery('.plus').text('+');jQuery('.answer').removeClass('open')}else{jQuery('#sym-'+i+'').toggleClass("rotate");jQuery('.faq-item .answer').hide();jQuery('#a-'+i).slideToggle(250);jQuery('.answer').removeClass('open');jQuery('#a-'+i).addClass('open');jQuery('.plus').text('+');jQuery('#sym-'+i+'').text('-')} return!1});jQuery('.fulldbtn').click(function(){var elem='#'+jQuery(this).closest('.testbigbox').attr('id')+' .fulldetails';jQuery(elem).toggle("slow");return!1});jQuery('.mcheck').click(function(){var id=jQuery(this).attr('id');var other='';if(id=='finger'){other='vene'}else{other='finger'} if(jQuery('#'+id).is(':checked')){jQuery('.'+id).show()}else{jQuery('.'+id).not('.'+other).hide()}});jQuery('.redi').click(function(){var cnt='#'+jQuery(this).closest('.testbigbox').attr('id');var url=jQuery(cnt+' .dropdownupdate').find(':selected').data('link');window.location.assign(url);return!1});jQuery('.dropdownupdate').on('change',function(){var price=jQuery(this).find(':selected').data('price');var price_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .price';jQuery(price_container).html('Special Price: '+price);var oldprice=jQuery(this).find(':selected').data('oldprice');var oldprice_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .oldprice';jQuery(oldprice_container).html('Normal Price: '+oldprice+'');var link=jQuery(this).find(':selected').data('link');var link_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' a.orderbtn';jQuery(link_container).attr('href',link);var lefttitle=jQuery(this).find(':selected').data('lefttitle');var lefttitle_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' h2.left_title';jQuery(lefttitle_container).text(lefttitle);var lefttext=jQuery(this).find(':selected').data('lefttext');var lefttext_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .left_text';jQuery(lefttext_container).html(lefttext);var boxtitle=jQuery(this).find(':selected').data('boxtitle');var boxtitle_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .tbhead';jQuery(boxtitle_container).text(boxtitle);var boxtext=jQuery(this).find(':selected').data('boxtext');var boxtext_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .boxtext';jQuery(boxtext_container).html(boxtext);var fdttitle=jQuery(this).find(':selected').data('fdtitle');var fdttitle_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .fulldtitle';jQuery(fdttitle_container).html(fdttitle);var fulld=jQuery(this).find(':selected').data('fulldetails');var fulld_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .fulldetailscnt';jQuery(fulld_container).html(fulld);var coup=jQuery(this).find(':selected').data('coupon');var coup_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .coupon';jQuery(coup_container).html(coup);var im=jQuery(this).find(':selected').data('image');var im_container='#'+jQuery(this).closest('.testbigbox').attr('id')+' .imgcontainer img';jQuery(im_container).attr("src",im)});jQuery('.lwptoc_item a').addClass('border');jQuery('.lwptoc_item_label').css('border-bottom','2px #1d2463 solid !important');jQuery('.menu-toggle ').click(function(){var close='';var open='';if(jQuery('#menu-cnt').css('display')=='none'){jQuery('#menu-cnt').show();jQuery('.menu-toggle ').html(close)}else{jQuery('#menu-cnt').hide();jQuery('.menu-toggle ').html(open);jQuery("").removeClass('open')} return!1});jQuery("#videomodal").click(function(){jQuery("#myModal iframe").attr("src",'');jQuery('#myModal').css('display','flex');return!1});jQuery("#videomodalquiz").click(function(){jQuery("#myModal iframe").attr("src",'');jQuery('#myModal').css('display','flex');return!1});function closemyModal(){document.getElementById('myModal').style.display='none';jQuery("#myModal iframe").attr("src",'')} jQuery("#ytbutton").click(function(){jQuery("#ytModal iframe").attr("src",'');jQuery('#ytModal').css('display','flex');return!1});jQuery(".stbt").click(function(){var name=jQuery(this).attr("data-name");var bio=jQuery(this).attr("data-bio");var img=jQuery(this).attr("data-img");jQuery('#staffname').text(name);jQuery('#staffbio').text(bio);jQuery('#staffimg').attr('src',img);jQuery('#staffModal').css('display','flex');return!1});function openytmodal(){jQuery("#ytModal iframe").attr("src",'');jQuery('#ytModal').css('display','flex');return!1} function closeytModal(){document.getElementById('ytModal').style.display='none';jQuery("#ytModal iframe").attr("src",'')} function closenoticeModal(){document.getElementById('noticeModal').style.display='none';document.cookie='notice=promos;max-age=259200000000;path=/'} function closestaffModal(){document.getElementById('staffModal').style.display='none'} function getCookie(cname){let name=cname+"=";let decodedCookie=decodeURIComponent(document.cookie);let ca=decodedCookie.split(';');for(let i=0;i992){headerHeight+=40}else if($(window).width()>1199){headerHeight+=60} $(window).scroll(function(){var scrolled=$(document).scrollTop();if(scrolled>headerHeight){$('#header').addClass('off-canvas')}else{$('#header').removeClass('off-canvas')} if(scrolled>scroll){$('#header').removeClass('fixed');if(window.matchMedia("only screen and (max-width: 760px)").matches){}}else{$('#header').addClass('fixed')} scroll=$(document).scrollTop()})})})(jQuery);jQuery.fn.outerhtml=function(){return(this[0])?this[0].outerHTML:''};jQuery(function(){let isMobile=window.matchMedia("only screen and (max-width: 760px)").matches;if(isMobile){jQuery(" a").append('');jQuery("li#menu-item-292 ul").prepend('
  • About Us
  • ');jQuery("li#menu-item-297 ul").prepend('
  • Services Overview
  • ');jQuery("li#menu-item-7259 ul").prepend('
  • Blood Testing Overview
  • ');jQuery('#menu-primary-menu > li').click(function(e){var jQueryel=jQuery('ul',this);jQuery('#menu-primary-menu > li > ul').not(jQueryel).slideUp();jQueryel.stop(!0,!0).slideToggle(400);if(jQueryel.html()!=undefined){return!1}});jQuery('#menu-primary-menu > li > ul > li').click(function(e){e.stopPropagation()});jQuery("").click(function(){jQuery("").removeClass('open');jQuery(this).addClass('open')});const target=document.querySelector('#menu-primary-menu') document.addEventListener('click',(event)=>{const withinBoundaries=event.composedPath().includes(target) var open='';if(!withinBoundaries){jQuery('#menu-cnt').hide();jQuery('.menu-toggle ').html(open);jQuery("").removeClass('open')}}) var temp=jQuery('#wide1col1').html();jQuery('#wide1col1').html(jQuery('#wide1col2').html());jQuery('#wide1col2').html(temp);var temp=jQuery('#wide3col1').html();jQuery('#wide3col1').html(jQuery('#wide3col2').html());jQuery('#wide3col2').html(temp);jQuery("#menu-item-291").append('
  • Login
  • ');var temp=jQuery('.fulldbtn').outerhtml();jQuery('.fulldbtn').remove();jQuery(".newtestbox").append(temp);jQuery('.fulldbtn').click(function(){var elem='#'+jQuery(this).closest('.testbigbox').attr('id')+' .fulldetails';jQuery(elem).toggle("slow");return!1})}})