What your personality type says about your weight, and how to maintain it post-mounjaro

Robert Price | Last update: 28th October 2025

I had a fantastic experience on the weight loss drugs, getting slimmer than I’d ever been in my entire adult life. But I definitely noticed things about myself. Sometimes I was extremely disciplined and stuck to exercise and diet like a pro, other times I got over excited and threw caution to the wind having a few beers and a tasty kebab (maybe chips…don’t judge). The following day I’d feel anxious (hanxiety?) and worry that I was doing a terrible job of it all, but by the next week was back to being goal-orientated and organised (obviously I hit a few of the personality traits below). The thing is, these traits exist on a spectrum, no one is “just one type”. But knowing your dominant traits can help explain certain behaviours and affect the whole weight loss drugs journey…

The Big Five Personality Traits

Most psychological research categorises personality using five main traits, known as ‘The Big Five’:

What type are you? Clues to look for

Ask yourself:

• Do I stick to plans or go with the flow? (Conscientiousness)
• Am I often stressed, anxious or moody? (Neuroticism)
• Do I prefer group activities or solo time? (Extraversion)
• Do I avoid conflict and go out of my way to help others? (Agreeableness)
• Do I love trying new things or prefer what I know? (Openness)

You can take free ‘Big Five’ quizzes online here – or just reflect on what feels most familiar. Many people are a blend of two or three dominant traits.

How personality traits relate to weight

Research shows that personality traits  DO predict weight gain, risk of obesity, and long-term weight management (knowledge is power).

Conscientiousness

• Most consistently linked to lower BMI and better weight maintenance.
• Associated with meal planning, healthier food choices, and resisting temptation.
• People low in conscientiousness are more impulsive and less structured, leading to more overeating and sedentary behaviour.

Neuroticism

• Predicts emotional eating, weight cycling, and difficulty maintaining weight.
• Individuals may be highly self-critical and sensitive to failure, leading to disordered eating patterns.

Extraversion

• Mixed findings: may promote active lifestyles but can also encourage social eating and impulsive choices.
• More likely to respond to external cues and social settings.

Agreeableness

• Associated with social eating pressures – saying yes to food even when full, or prioritising others’ needs over personal goals.
• More empathetic, which may lead to guilt and over-compensating with food.

Openness to Experience

• Correlated with willingness to try new diets or activities.
• Can enhance success if novelty is built into routines, but risk of program-hopping or inconsistency.

Post-Mounjaro/Wegovy strategies by personality type

Once the appetite-suppressing effect of GLP-1 drugs ends, you’ll need to lean into habits, structure, and mindset tailored to your personality.

Low conscientiousness

• Build structure into your day with reminders, meal planning tools, and visual cues
• Use small, achievable goals (e.g. 10 mins of walking daily)
• Automate good habits (same breakfast, scheduled shopping list)
• Track meals with low-effort tools like voice logging or photo journaling

High neuroticism

• Focus on emotion regulation (journaling, therapy, mindfulness apps)
• Build awareness around stress eating triggers
• Use mood and food tracking to spot patterns
• Prioritise sleep and stress management as much as food and fitness

High extraversion

• Join walking groups, fitness classes, or online challenges
• Use social platforms to share your progress and stay accountable
• Try “body doubling” – exercise or meal prep with a friend

Low extraversion

• Build solo-friendly routines like solo walks or yoga with YouTube
• Choose private gyms or home equipment if large crowds demotivate you
• Use digital tracking and rewards over social reinforcement

High agreeableness

• Practise boundary-setting around food choices
• Script polite ways to decline food that doesn’t serve your goals
• Prioritise your own health needs without guilt

High openness

• Rotate meals weekly to prevent boredom
• Explore different cuisines that fit your plan
• Try “gamifying” fitness with apps like Zombies, Run! or virtual hikes

Personality and exercise: What works best?

Matching your exercise approach to your personality helps with long-term success:

Final thought from SlimrChat

Personality doesn’t determine destiny, but it can shape your success strategy.

By understanding what drives you, stresses you, or inspires you, you can create a post-Mounjaro or Wegovy plan that supports lasting weight maintenance. Whether you’re structured or spontaneous, anxious or adventurous, introvert or social butterfly – there’s a strategy for you.

SlimrChat content, tools and community will increasingly reflect these personality differences, helping you build a truly personalised path forward.

Want to dive deeper? Join our forums to share your type and your tips.

Sources include:

• NIH: Personality Traits and Body Weight
• APA: Conscientiousness is Key to Healthy Weight
• ScienceDirect: Personality and Weight Maintenance
• Psychiatry Online: Trait Predictors of Obesity