age graph with testosterone

Testosterone: What Age Does It Begin to Decrease?

Testosterone is an advantageous hormone that plays multiple crucial roles in the human body such as influencing sexual functioning, building muscle mass, maintaining bone health, regulating emotions and boosting energy levels. Nevertheless, getting older involves decreasing quantities of this critical hormone which results can sometimes be difficult on many fronts. This article aims to cover everything regarding testosterone: explaining what it is; discussing at what point its decrease happens; exploring the causes that lead to its reduction; proposing potential solutions.

What Is Testosterone?

Testosterone is a hormone that falls under the umbrella term 'androgen' which relates directly to sexual functions prevalent in males primarily but also present in females to an extent (ovaries being its main site). The adrenal glands play a minor role here too by generating this hormone albeit at minute rates within both sexes. Testosterone serves multiple purposes related particularly to masculinity for example inducing hair growth on face & body parts where applicable , producing low pitched voice patterns, noise eruptions etc alongside proportions of sizable genitalia dimensions plus resulting sperm formation amongst others . It equally governs arousal kinks listed above coupled with organ ability act successful bouts interactions along with maintaining a wholesome state concerning all-encompassing well-being like:

  • Muscle mass and strength
  • Bone density and risk of osteoporosis
  • Fat distribution and metabolism
  • Red blood cell production and oxygen transport
  • Mood and mental health
  • Cognitive function and memory
  • Self-esteem and confidence

There are various factors that can affect one’s level of testosterone - these might include aspects related to genetics - lifestyle choices that we make on our own time -- our dietary habits -- stress that we may experience during our daily lives -- or even any medical conditions someone may face presently. To determine an individual’s current standing , measuring their overall count via blood work is needed prominently displaying either all currently circulating serum hormones or bioavailability as a choice. The most commonly accepted standard set forth by the American Urological Association (AUA) considers anything above 300 nanograms per deciliter (ng/dL) as being ‘normal’ with any readings below that point being indicative of a low testosterone status for males. When referring to healthy testosterone ranges of women aged 19 or older, said levels exist typically between 15 and 70 ng/dL.

What Age Does Testosterone Begin to Decrease?

middle aged man looking at mirror

As people age, their testosterone levels go down slowly. Teenagers and those in early adulthood have the highest levels of the hormone. For guys especially, these peak when they're around eighteen or nineteen years old before gradually winding down throughout the rest of adulthood while for girls it peaks at roughly twenty before heading down into menopause. 

The speed plus extent that levels go down will differ from one person to another based on various factors like individual variation so it's hard to predict precisely how much each person's level will fall by or just when based on physical issues influencing hormone production plus metabolism. Nevertheless most male adults have a rate of decrease at around one percent per annum after hitting thirty, commonly known as male menopause (or Andropause) since hormone regulation and production change with aging. 

There are some exceptions though where men maintain stable testosterone levels right into old age despite passing the threshold ages associated with declining levels! Women also experience decreasing T-levels during menopause - usually occurring between 45-55 - due to lowered ovarian function along with diminishing estrogen synthesis and secretion but however just like for males not all females will necessarily encounter an intense plunge post .

Why Does Testosterone Decrease With Age?

old man exercising

The precise explanation behind the depletion of testosterone levels in older individuals is not entirely comprehended. Nevertheless, certain potential factors that could play a role in contributing to this occurrence are:

  • Aging: As individuals age, they experience changes to both the structure and effectiveness of their testes/ovaries which produce testosterone. In addition to this, aging has repercussions for how their hypothalamus/pituitary gland governs hormone output. Moreover, seniors' receptors plus enzymes - which deal with mediating testosterone metabolism - may be subject to modification due to aging.
  • Lifestyle: Your lifestyle can influence your body's testosterone supply -- either positively or negatively -- through various factors like physical activity habits, dietary intake patterns, sleep behavior, stress tolerance level, cigarette or alcohol use,and even frequency of sexual conduct.
  • Medical conditions: Both certain medical conditions like liver disease and kidney disease or medication use (opiates/stimulants/antidepressants) can significantly decrease testosterone production/action in males. Additionally obesity and diabetes are contributing factors towards decreased levels.


Testosterone regulation is essential for long-term physical wellness and affects essential bodily functions such as sexual performance, bone density, muscle mass development, and psychological well-being.Unfortunately, it is natural for testosterone levels to gradually decline with age due to individual variations present in our biology & other underlying medical or metabolic conditions.. 

The symptomatic signs which might signify this decline include difficulty achieving an erection, reduced energy levels, hair loss loss, difficulty concentrating, fatigue or tiredness,mood swings,and low self-esteem among many others. It is important to note that symptoms might affect different people at varying degrees,

To confirm suspicions or rule out underlying medical conditions it's advisable to promptly consult with a qualified physician with proper evaluation of present indications.

James Freeman


Meet James Freeman, a California native whose passion for fitness emerged during challenging times, reshaping his life. With over two decades of coaching experience, he's not just a coach; he's a real-life example, shedding over 100 pounds in a journey to a healthier lifestyle. Beyond his coaching career, James is passionate about inspiring at-risk youth and promoting wellness in schools. In his downtime, he enjoys swimming and cycling, connecting with nature. Join him on his Instagram and LinkedIn profiles for insights into his empowering fitness journey.