Talking testosterone deficiency with Dr Zak Zafrani

Despite growing awareness of men’s health, testosterone deficiency remains under-recognised, underdiagnosed, and often misunderstood, both by men themselves and the clinicians treating them. Dr Zak Zafrani, a GP at Numan and an expert in men's health, is on a mission to change that.

What’s my biological age and how do I calculate it?

You’ve probably heard the phrase “You’re only as old as you feel”, but what if there’s a science behind that statement? That’s the idea behind biological age, a concept that’s starting to make its way around various health circles, even though it’s not yet fully standardised. Unlike your chronological age (the number of candles on your birthday cake), your biological age reflects how your body is ageing on the inside.

What is the meaning of longevity?

Ask five different experts what longevity means and you’ll get five different answers. To a fitness fanatic, it might mean hacking your biology to reach 120. To your GP, it might mean avoiding a heart attack in your 60s. To the average person? Probably just being well enough to enjoy old age or to live long and well.

The healthspan gap explained: bridging the divide between longevity and healthy living

Many people spend the final years of their lives in poor health. This is the healthspan gap - the difference between how long we live (our lifespan) and the number of years we live in good health (our healthspan).¹

What’s the difference between healthspan and lifespan?

When we talk about living longer, it's important to understand the terms 'lifespan' and 'healthspan'. But what's the difference, and why does it matter? Simply put, lifespan is how many years you live, while healthspan is about how many of those years you live in good health, free from significant illnesses.¹

What your healthspan is and why it matters now more than ever

From Oscar Wilde to Doctor Who, we’re always fascinated by living longer. But a critical question remains: how can we make sure those added years are healthy ones?

How can I extend my healthspan?

We’ve become pretty good at living longer. Thanks to modern medicine, safer environments, and better access to food and clean water, average life expectancy has soared over the past century. But while we’re gaining years, we’re not necessarily gaining healthy years.

What causes menopause?

At some point, every woman experiences it. Yet despite its inevitability, menopause remains poorly understood, even by those living through it. Too often, it’s reduced to hot flushes, sleepless nights, or a punchline about midlife. But menopause is a biological shift rooted in complex hormonal changes that affect nearly every organ system in the body.

How is menopause diagnosed?

For many women, signs like hot flushes, irregular periods, mood swings, or brain fog start to appear in their 40s, but menopause doesn’t follow a strict timeline. Some experience symptoms earlier, others later, and not everyone has the same signs. So how do you know when it’s actually menopause? Is it something a blood test can confirm? Or can your GP tell just from your symptoms?

Five minutes with our founder: Numan secures $60M to spearhead the next era of patient-first preventative health

We’ve recently hit a significant milestone for Numan and secured $60 million in new funding. This support underlines our commitment to our patients, and our mission to make proactive, patient-centred care a cornerstone of healthcare.

Let’s talk about the vaginal symptoms of menopause

Hot flushes are what gets the headlines when talking about menopause. But for millions of women, the most persistent, distressing, and silenced symptom is one they’re least likely to talk about: vaginal dryness.1

Introducing the Numan Weight Loss Diaries

At Numan, we understand that starting a weight loss journey is more than just a decision - it’s a commitment to a healthier life.

Combining HRT with weight loss medications: what you need to know

For women going through both menopause and obesity, managing weight while relieving menopausal symptoms often involves two combined treatment paths: hormone replacement therapy (HRT) and GLP-1 medications (such as Mounjaro or Wegovy). But is it safe - and effective - to take them together?

Understanding menopause: what to expect and how to manage symptoms

Each year, around 1.5 million women in the UK go through the menopause transition. And yet, despite how common it is, many still feel unprepared for the physical and emotional changes it brings.1 From hot flushes to mood swings, sleep disturbances to vaginal dryness, menopause can affect every part of your wellbeing.

What you need to know about HRT

For many women, menopause arrives with a wave of physical and emotional changes that can disrupt daily life. Hot flushes, night sweats, mood swings, brain fog, vaginal dryness, and fatigue are just some of the common symptoms. Hormone replacement therapy (HRT) is one of the most effective treatments for managing these symptoms, and yet, it’s often misunderstood.1

Can obesity affect your ability to have children?

We all know that being overweight impacts your health. But did you know it might also make it harder to have children?

What to do if you’re travelling abroad with weight loss medications

Travelling while on weight loss medications, such as Wegovy or Mounjaro, doesn't have to be daunting. With a little preparation, you can make sure your treatment plan remains uninterrupted on your travels.

Enhancing menopausal health: the role of vitamin D

Menopause marks a new chapter in life, often accompanied by challenges like sleep issues, bone density loss, weight gain, and mood swings. There has been some research into vitamin D, a nutrient gaining attention for its potential to alleviate some common menopause issues.