Your clothes are fitting differently. Your energy has shifted. Your sleep is not what it was. And despite eating well and staying active, nothing seems to respond the way it used to.
This is not a willpower problem. It is a hormonal one.
What Perimenopause Actually Does to Your Body
Perimenopause can begin as early as the mid-30s and is driven by fluctuating and gradually declining oestrogen levels. This hormonal shift affects far more than reproduction.
Up to 80% of women experience symptoms during this transition, and they are wide-ranging. Hot flushes and night sweats are the most well-known, but the full picture often includes: PubMed Central
- Disrupted sleep and insomnia
- Anxiety and low mood
- Difficulty concentrating
- Irregular or heavier periods
- Joint aches and stiffness
- Migraines or increased headaches
- Low libido
- Unexplained weight gain
Changes in mood and cognitive function are particularly well documented during perimenopause, alongside musculoskeletal pain and cardiovascular changes.
Many women are managing several of these symptoms simultaneously, often without realising they are connected.
Why Oestrogen Matters for Weight and Metabolism
Oestrogen does not just regulate the menstrual cycle. It plays a direct role in how the body stores fat, uses energy, and responds to insulin.
Declining oestrogen levels are thought to partially explain the increase in metabolic disorders seen during and after the perimenopausal transition, including reduced insulin sensitivity and changes in blood glucose regulation. ScienceDirect
The hormonal changes across perimenopause substantially contribute to increased abdominal fat accumulation, which carries additional physical and psychological health consequences. ScienceDirect
This is why weight during perimenopause tends to shift specifically to the abdomen — and why approaches that worked in your 20s and early 30s often stop producing the same results.
Why “Eat Less, Exercise More” Often Makes Things Harder
When the body is under hormonal pressure, simply reducing calories further can work against you.
During perimenopause there is a decrease in whole-body protein balance, an increase in abdominal fat, and reduced metabolic flexibility, meaning the body becomes less efficient at switching between fuel sources. Nature
Pushing harder with restriction and exercise without addressing the underlying hormonal and metabolic picture can increase stress load on the body, disrupt sleep further, and make progress even more difficult.
What Actually Supports the Body at This Stage
Rather than working against the body’s changing physiology, the focus needs to shift toward supporting the systems that are under pressure:
- Stabilising blood sugar to reduce insulin demand
- Supporting sleep quality to regulate appetite hormones
- Reducing chronic stress load on the nervous system
- Building and maintaining metabolically active muscle
- Optimising nutrition specifically for hormonal health
When these systems are addressed together, the body typically begins to respond again.
You Are Not Broken – You Are Changing
Perimenopause is a normal physiological transition. But it does require a different approach than the one most women have been given.
Understanding what is actually happening in your body is often the first and most important step.
If you recognise these symptoms and feel like your current approach is no longer working, there is usually a clear reason, and a more targeted path forward.
If you would like to explore what that looks like for you, I work with women through this transition inside my programs.
Continue Reading
- Why I Created Tree of Health Root Cause Programs for Women 35+
- Why Root-Cause Approaches Matter in Long-Term Health
- Perimenopause and Weight Gain: What Your Hormones Are Actually Doing
References
- Delamater, L. & Santoro, N. (2018). Management of the Perimenopause. Clinical Obstetrics and Gynecology. PMC
- Lizcano, F. & Guzmán, G. (2014). Estrogen Deficiency and the Origin of Obesity during Menopause. PMC https://pmc.ncbi.nlm.nih.gov/articles/PMC3964739/
- Mauvais-Jarvis, F. et al. (2022). The importance of estradiol for body weight regulation in women. Frontiers in Endocrinology. https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2022.951186/full
- Davis, S.R. et al. (2012). Understanding weight gain at menopause. Climacteric. https://www.tandfonline.com/doi/full/10.3109/13697137.2012.707385