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What is it called when you turn 40? Exploring this midlife milestone

4 min read

While most people simply call it turning 40, there's a lesser-known term for it and a person in their forties. A quadragenarian is a person between the age of 40 and 49. This stage, often known as middle age, marks a significant psychological and physiological transition for many people, prompting a period of reflection and new beginnings.

Quick Summary

A person who turns 40 is a quadragenarian, though they are more commonly referred to as being in their forties or entering middle age, a time marked by significant reflection and potential growth.

Key Points

  • Term for Turning 40: A person turning 40 is technically called a quadragenarian, though the term 'middle age' is far more common for this life stage.

  • Midlife Psychological Shift: Turning 40 is often a period of significant reevaluation, aligning with Erikson's theory of Generativity vs. Stagnation, where people seek to leave a legacy.

  • Physical Changes Are Normal: Vision changes (presbyopia), a slower metabolism, and hormonal shifts are normal as one enters their 40s, requiring a proactive health focus.

  • Embrace the New Chapter: This decade can be a time of great confidence and purpose, as accumulated wisdom and experience allow for new pursuits and goals.

  • Proactive Wellness is Key: Focusing on physical, emotional, and social health is crucial for navigating the changes of midlife successfully and continuing to thrive.

In This Article

Understanding the Quadragenarian Milestone

While the term quadragenarian is formal and not used in everyday conversation, it is the precise answer to the question, What is it called when you turn 40? The word comes from the Latin quadrāgēnārius, meaning 'containing 40'. This term is part of a series that includes vicenarian (20s), tricenarian (30s), and so on, though these terms are generally reserved for formal or humorous contexts. The more common and widely understood name for this life stage is 'middle age,' a period that, while not universally defined, typically spans from the early 40s to the mid-60s.

The Psychology of Turning 40

Beyond a simple label, turning 40 represents a profound psychological shift for many people. It's often a time of reevaluation, where individuals take stock of their lives, careers, relationships, and personal goals. This period is associated with Erik Erikson's seventh stage of psychosocial development, known as 'Generativity vs. Stagnation'.

  • Generativity: This refers to the desire to contribute to society and leave a lasting legacy. It can manifest through mentoring others, raising children, or creating things that will outlive oneself.
  • Stagnation: This is the alternative outcome, where individuals feel unproductive and disconnected from the world. It can lead to feelings of purposelessness and dissatisfaction.

Physical Changes and Health Considerations

As we enter our 40s, our bodies undergo several natural changes that require attention and proactive care. These changes are not signs of decline but rather a call to adapt and prioritize wellness.

  • Vision Changes: Many quadragenarians experience presbyopia, a gradual loss of the eye's ability to focus on nearby objects, often necessitating reading glasses.
  • Metabolic Slowdown: Metabolism naturally slows down, making weight management more challenging. A focus on balanced nutrition and regular exercise becomes even more critical.
  • Hormonal Shifts: For women, perimenopause often begins, bringing hormonal fluctuations. Men may also experience hormonal changes.
  • Bone Density: Bone mass can begin to decrease, making consistent exercise and proper nutrition vital for bone health.

Navigating the Midlife Transition

For many, the transition into their 40s is not a crisis but a period of renewed purpose. The phrase 'life begins at 40' highlights the sense of freedom and self-assurance that can accompany this decade. With wisdom and experience accumulated over decades, many people feel more confident and less concerned with external validation. This can be a time for pursuing long-held passions, shifting careers, or deepening social connections.

Key Strategies for a Healthy 40s

  1. Prioritize Your Health: Schedule regular check-ups, including screenings for things like blood pressure, cholesterol, and vision. Listen to your body and adjust your diet and exercise routine accordingly.
  2. Focus on Emotional Well-being: Address any underlying stress or anxiety. Consider mindfulness, therapy, or new hobbies that promote mental and emotional health.
  3. Invest in Your Relationships: Midlife can be a time to strengthen bonds with family and friends. Nurture your connections and build new ones.
  4. Embrace Lifelong Learning: Take up a new skill, a class, or a creative pursuit. Engaging in new challenges keeps the mind sharp and life dynamic.
  5. Reevaluate Your Goals: With a different perspective, you might find that your priorities have shifted. Don't be afraid to change direction and pursue what truly brings you fulfillment.

A Comparative Look at Decades

Life Stage Common Names Psychological Focus Health Focus Opportunities
Vicenarian (20s) 20-something, young adult Identity formation, career exploration Building fitness, establishing habits Independence, foundational career building
Tricenarian (30s) 30-something, older young adult Intimacy, settling down, family Maintaining peak fitness, stress management Career growth, establishing a family
Quadragenarian (40s) 40-something, middle age Generativity, legacy, purpose Proactive health, adapting to changes Reassessment, personal growth, new passions
Quinquagenarian (50s) 50-something, later middle age Mentoring, enjoying life's rewards Managing health proactively, prevention Empty nest, second career, travel

Embracing a New Chapter

Far from being a sign of decline, turning 40 is a powerful time for renewal and growth. It's a chance to build upon the lessons of the past and step into the future with greater wisdom and confidence. By taking a proactive approach to physical health, nurturing emotional well-being, and embracing new opportunities, a quadragenarian can truly thrive. This period is an opportunity to author the next chapter of your story, grounded in a deeper understanding of yourself and your values. For more insights on navigating the complexities of middle adulthood, consider exploring resources on psychology and personal development, such as Psychology Today's articles on mid-life.

Conclusion: More Than Just a Number

So, what is it called when you turn 40? While the technical term is quadragenarian, the true answer is a new, powerful phase of life. It’s a decade defined not by age, but by a renewed sense of purpose, self-acceptance, and the desire to make a meaningful impact. By embracing the challenges and opportunities of this milestone, one can look forward to a vibrant and fulfilling future.

Frequently Asked Questions

The concept of a midlife crisis is often exaggerated. While many people experience a period of reevaluation and reflection around age 40, it's more accurately described as a normal transition and a chance for personal growth, rather than a full-blown crisis.

The term comes from the Latin word quadrāgēnārius, which means 'consisting of forty.' It is part of a system of Latin-derived words used to describe people within a certain decade of age.

Yes, it is far more common to refer to someone as a '40-something' or to say they are 'in their forties.' The term quadragenarian is not used often in casual conversation.

Common health changes include a slowing metabolism, requiring adjustments to diet and exercise. Many people also experience vision changes like presbyopia. It’s important to prioritize regular check-ups and a healthy lifestyle.

This popular saying suggests that with the wisdom and experience gained, many people feel a new sense of freedom, purpose, and confidence at age 40. It’s a time to focus on personal happiness and pursue new interests.

You can prepare by focusing on self-care, embracing new challenges, and reevaluating your personal and professional goals. Prioritizing health, fostering strong relationships, and learning new skills can make the transition a positive one.

After your 40s, you enter your 50s as a quinquagenarian, your 60s as a sexagenarian, and so on. Erikson's theory places middle adulthood (40-65) as the stage of generativity vs. stagnation, followed by maturity (65+).

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice. Always consult a qualified healthcare provider regarding personal health decisions.