How many times have you been told – directly or indirectly – that your weight determines your health?

If you’ve spent years chasing a “healthy” BMI, watching the scale, or feeling pressure to shrink your body in the name of wellness, you’re not alone. But here’s the truth: weight and BMI tell us very little about what’s actually happening inside your body, especially during perimenopause.

In today’s post, I’m breaking down the numbers that actually matter for your health if you’re in or near perimenopause (and honestly, many of these apply well beyond that stage of life too).

Because your weight tells us one thing: your gravitational pull. Your labs tell us everything else.

Why Weight Is a Poor Measure of Health

Let’s get this out of the way upfront: the scale is not a diagnostic tool. Your weight cannot tell us:

• How well your organs are functioning
• How your body regulates blood sugar
• Your cardiovascular risk
• Whether you have inflammation or infection
• If nutrient deficiencies are present
• How your metabolism is adapting to hormonal changes

Yet diet culture continues to center weight as the ultimate health metric, especially for women navigating midlife body changes.

When I work with clients who have health concerns, the very first thing we do is gather data, and that data does not start with weight loss goals. It starts with labs.

Labs help us understand what your body is communicating so we can respond with gentle, supportive nutrition strategies, which is absolutely part of intuitive eating.

Why Labs Matter Even More in Perimenopause

Perimenopause brings real physiological changes, including:

• Shifts in estrogen and progesterone
• Changes in insulin sensitivity
• Increased cardiovascular risk
• Altered lipid patterns
• Bone density changes
• Greater stress on thyroid and metabolic systems

Many women are told, “This is just part of aging,” or worse, are encouraged to diet harder when symptoms appear. 

But labs often reveal clear, actionable information that has nothing to do with body size.

And here’s the part that surprises a lot of people: very few of the most important labs are nutrient labs.

Instead, we’re looking at markers that tell us how your organs and metabolic systems are functioning as a whole.

The Most Important Labs to Know (and Why They Matter)

Below are the labs I most commonly recommend clients understand and review with their doctor. This is not medical advice, and you should always work with your provider to determine what’s appropriate for you, but these are the numbers that actually guide meaningful health decisions.

Complete Blood Count (CBC)

A CBC gives us insight into:

• Anemia*
• Infection
• Immune system health
• Overall blood health

*Anemia is especially common in women and can contribute to fatigue, dizziness, weakness, and brain fog – symptoms often blamed solely on hormones.

Comprehensive Metabolic Panel (CMP)

This panel gives us a big-picture snapshot of:

• Kidney function
• Liver function
• Hydration status
• Electrolyte balance
• Blood sugar at the time of the draw

Your liver and kidneys are responsible for detoxification, not cleanses or supplements. If these organs aren’t functioning properly, that’s something your labs will reveal.

Blood Sugar Markers

Blood sugar regulation often changes during perimenopause, even in people who have never had issues before.

Key labs include:

• Fasting glucose (a snapshot in time)
• Hemoglobin A1c (your average blood sugar over ~3 months)
• Sometimes insulin, depending on history and symptoms

These labs help assess insulin resistance and metabolic health. They are far more predictive of long-term health than weight alone.

Lipid Panel (Cholesterol)

Hormonal shifts can significantly impact cholesterol patterns. A lipid panel includes:

• Total cholesterol
• LDL
• HDL
• Triglycerides

These numbers help assess cardiovascular risk, which does increase during and after menopause. Again, this risk exists across body sizes.

Thyroid Panel

Thyroid symptoms often overlap with perimenopause symptoms:

• Fatigue
• Hair changes
• Cold sensitivity
• Weight changes
• Brain fog

Understanding thyroid function can help differentiate hormonal changes from thyroid dysfunction and guide appropriate next steps.

Vitamin D

Vitamin D plays a role in bone health, immune function, and mood regulation.

Deficiency is common, especially in colder climates or during winter months, and can exacerbate perimenopause symptoms.

Vitamin B12 (Sometimes)

If you’re vegetarian, vegan, or eat very little meat, B12 may be worth checking, particularly if you’re experiencing fatigue, numbness, or neurological symptoms.

Honorable Mention: Blood Pressure

Blood pressure isn’t a lab, but it’s a vital sign that deserves attention, especially as cardiovascular risk increases in midlife.

Again, this is not about weight. It’s about how your cardiovascular system is functioning.

The Labs You Don’t Need (Yes, Really)

This might be the most surprising part of the episode.

Routine hormone testing is usually not helpful in perimenopause.

Why? Hormone levels fluctuate dramatically day to day. In other words, a single blood draw rarely reflects what’s actually happening. That’s why symptoms matter more than numbers.

Many women spend hundreds (or thousands) of dollars chasing hormone panels that provide little clarity and often more confusion.

That doesn’t mean hormones aren’t important. It means that labs aren’t always the best tool to assess them during this stage of life.

Listening to Your Body Through Data

One of the biggest myths about intuitive eating is that it ignores science or medical data. In reality, intuitive eating includes listening to all forms of body communication, including lab results.

Labs help us identify what needs support, avoid unnecessary restriction, focus on nourishment instead of punishment, and make informed decisions with your healthcare team.

This is not about perfection. It’s about understanding what your body is asking for.

Key Takeaways

Weight is not a reliable indicator of health. At the end of the day, labs provide meaningful insight into organ and metabolic function – a.k.a., what your body is really communicating.

Perimenopause is a time when data matters, not dieting harder. Don’t be afraid to listen to your body’s messages, including lab results

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Search for Ep.218 (Transcript): Know Your Numbers (That Actually Matter More Than Weight): Labs That You Should Have Checked If You’re In or Near Perimenopause

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