If you are a woman over 40 who is gaining weight, feeling sluggish, or struggling with brain fog, your thyroid could be the root cause. Even small changes in thyroid function can disrupt your metabolism, energy levels, and ability to lose weight.
At Skinny Seattle, we work with women in Bellevue and beyond who have been told their labs are “normal” yet still feel off. This article explains the connection between thyroid and metabolism, common symptoms of dysfunction, and how advanced testing can finally give you answers.
What the Thyroid Does and Why It Matters for Weight
Your thyroid is a small gland in your neck that plays a big role in regulating your metabolism. It helps control how fast your body uses energy, how warm you feel, and how your organs function.
When your thyroid slows down, your metabolism does too. This makes it easier to gain weight and harder to lose it. A sluggish thyroid can hold you back even if you are eating clean and exercising.
Signs Your Thyroid May Be Out of Balance
Many women assume their symptoms are just part of aging or menopause. But these signs often point to a deeper issue:
- Unexplained weight gain
- Constant fatigue
- Depression or mood swings
- Brain fog or forgetfulness
- Dry skin or thinning hair
- Feeling cold even in warm rooms
- Constipation
- Slow heart rate
If these sound familiar, it is worth getting your thyroid tested.
Why Standard TSH Testing Is Not Enough
Most doctors only test TSH (thyroid-stimulating hormone) to screen for thyroid issues. But TSH alone does not show the full picture.
Many women with “normal” TSH levels still experience symptoms. Comprehensive testing gives us a clearer picture of what your body truly needs.
How Hypothyroidism Slows Metabolism
Hypothyroidism means your thyroid is underactive. This slows your entire system, including your metabolic rate. Here’s how it affects your weight:
- Fewer calories burned at rest
- Increased belly and hip fat
- Water retention
- Slower digestion
Even small hormonal shifts can cause noticeable weight gain and fatigue.
The Weight Gain Triggers Most Women Miss
Sometimes thyroid issues are only part of the problem. Other common triggers include:
- Elevated cortisol from chronic stress
- Insulin resistance and blood sugar fluctuations
- Estrogen dominance during perimenopause
- Deficiencies in selenium, zinc, or iodine
At Skinny Seattle, we use lab-guided testing to assess your hormone and nutrient profile. This helps us identify the true roadblocks to weight loss.
A Root-Cause Plan for Thyroid Weight Loss
You need a personalized strategy if you are tired of generic advice and plans that do not work.
We help clients:
- Understand their lab results
- Support thyroid health with nutrition and lifestyle
- Balance hormones naturally
- Regain energy and metabolic flexibility
Learn more about our personalized weight loss programs for women over 40.
Why Women in Bellevue Choose Skinny Seattle
Skinny Seattle is known for personalized, science-based care. Women from Bellevue, Kirkland, Redmond, and Sammamish come to us when they want answers—not just medications or guesses.
Whether in person or virtual, you receive:
- Functional lab testing
- 1:1 coaching
A sustainable plan tailored to your biology
Ready to Review Your Thyroid Health?
Start with a consultation. We will go over your symptoms, history, and past labs to decide which testing and strategies are right for you.
Frequently Asked Questions
What are the most common thyroid-related symptoms in women over 40?
Fatigue, weight gain, low mood, brain fog, and cold sensitivity. These symptoms often get dismissed as normal aging but may point to thyroid imbalance.
Can I lose weight with hypothyroidism?
Yes, but you need a plan that supports thyroid function and corrects other underlying issues like insulin resistance and inflammation.