Episode 14

full
Published on:

30th Jul 2025

Understanding Testosterone with Dr Jonathan Andrews

In this comprehensive episode of The Male Fertility Podcast, hosts Ciaran and Shaun speak with Dr Jonathan Andrews about testosterone - the hormone that affects everything from fertility and muscle mass to mental health and motivation.

In this episode, Johnny reveals:

What Testosterone Actually Does: Testosterone is the primary male sex hormone responsible for the development and maintenance of all male characteristics - from muscle mass and bone density to libido and mood regulation. It's literally the hormone that transforms boys into men during puberty and maintains those characteristics throughout life.

The Age Factor: From mid-thirties to forties, testosterone levels typically decline by 1-2% per year. Unlike the dramatic "cliff drop" of female menopause, male testosterone decline is gradual - so subtle you might not notice until symptoms become significant.

Why Young Men Can Have Low Testosterone: Age isn't the only factor. Younger men are increasingly presenting with low testosterone due to lifestyle factors, obesity, stress, poor sleep, environmental factors, and medical conditions. Don't assume you're "too young" to have low testosterone.

The Symptoms You Might Miss: Brain fog, fatigue, loss of morning erections, decreased libido, difficulty building muscle, increased body fat, mood changes, and reduced motivation can all be signs of low testosterone. Many men dismiss these as "just getting older" when they could be treatable.

Why Lifestyle Changes Sometimes Fail: Even when men adopt "testosterone-friendly" lifestyles - better diet, exercise, reduced alcohol - levels can sometimes drop further. This happens because weight loss can temporarily reduce free testosterone, and other factors like stress or illness can override lifestyle improvements.

The Diagnosis Process: Proper testosterone diagnosis requires two blood tests at least 4-6 weeks apart, taken in the early morning when levels are highest. Single tests aren't reliable due to natural fluctuations, stress, illness, and circadian rhythms.

TRT vs Underground Alternatives: With growing awareness of testosterone's importance, some men seek treatment through unregulated channels. Johnny emphasises the importance of proper medical supervision, licensed medications, and comprehensive health monitoring.

The Mental Health Connection: Low testosterone can cause depression-like symptoms. Many men are prescribed antidepressants when the root cause might be hormonal. Addressing testosterone deficiency can be life-changing for mood, motivation, and overall mental health.

Johnny emphasises that testosterone affects virtually every aspect of male health and wellbeing. His advice is clear: if you're experiencing symptoms, don't assume it's just aging - get tested by qualified professionals who understand the complexity of hormone health.

Connect with Dr Jonathan Andrews:

@Ted's Health Website: tedshealth.com

Have questions or experiences about your fertility journey?

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DISCLAIMER: The content in this podcast is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or qualified healthcare provider.

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About the Podcast

The Male Fertility Podcast
The UK’s leading podcast on male fertility. Real stories, expert advice, and the conversations men aren’t having.
The Male Fertility Podcast is the UK’s leading show dedicated to male fertility, hosted by Ciaran and Shaun, two men who’ve lived the reality of infertility diagnoses, fertility treatment, and everything that comes with it.

Whether you’re dealing with low sperm count, poor motility, low morphology, azoospermia, or a varicocele diagnosis, this podcast is the resource you wish you’d had from day one.

Each episode covers what actually matters: IVF and ICSI from the male perspective, navigating NHS referrals and waiting lists, the real cost of private treatment in the UK, lifestyle changes that can improve sperm quality, and the emotional and mental health impact that often goes unspoken.

We speak to fertility specialists, urologists, andrologists, and men sharing real, unfiltered stories — from difficult diagnoses through to successful pregnancies.

Topics we cover:

Male factor infertility: diagnosis and treatment options
Sperm health: count, motility, morphology, DNA fragmentation
IVF, ICSI, MESA, TESE, micro-TESE
Varicocele surgery and recovery
Supplements, diet, exercise, and lifestyle changes
Mental health, relationships, and coping strategies
NHS vs private fertility treatment in the UK
Costs, funding, and access to treatment
Supporting your partner
Real stories and success journeys

This podcast exists because male fertility is too often overlooked. Half of all infertility involves a male factor, yet most support is aimed elsewhere. We’re changing that.

If you’re facing fertility challenges, or supporting someone who is, subscribe now — you’re not alone.

About your host

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Ciaran Hannington