Isabel Smith Nutrition

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Isabel Smith Nutrition Registered Dietitian/ Nutritionist, fitness and wellness expert & coach, spokesperson, media personal

10/20/2026

You come to me expecting another list of foods to avoid… and we end up talking about what we can ADD. 🤍

I cannot tell you how often expanding someone’s food list is part of them starting to feel better.
When you’ve had symptoms after eating, I understand why you’re hesitant. You want to feel better, and removing that food feels like something you can control.
But if you keep cutting things out and you’re STILL struggling, I want to take a closer look.
→ What did you remove, and did it actually help?
→ Are you eating enough?
→ What does a full day of food look like now?
→ Where might we have room to bring back some variety?
Those answers help me decide where we start. The foods we consider, the pace, and what we watch for depend on YOUR history + symptoms.
This doesn’t mean pushing through reactions or reintroducing a known allergen. It means being thoughtful about whether every restriction still needs to be there.
Food expansion is a big part of my work. And sometimes, it’s the part someone wasn’t expecting. 💚
Is your food list getting smaller without you feeling better? Book a free call with our team through the link in bio.

Could mast-cell activation be connected to insulin resistance? 👀🦠 When we talk about MCAS, the conversation usually revo...
10/16/2026

Could mast-cell activation be connected to insulin resistance? 👀

🦠 When we talk about MCAS, the conversation usually revolves around histamine, flushing, food reactions, and other symptoms of mast-cell mediator release.

🔎 But here’s something interesting: mast cells aren’t only involved in allergic reactions.

🧬 They’re also found in metabolic tissues, including adipose tissue, where researchers have been investigating their potential role in inflammation and insulin signaling.

💡 Why does this matter?

🔥 Chronic inflammation can interfere with normal insulin signaling, and researchers are exploring whether mast-cell activity contributes to some of these processes.

⚠️ Here’s the important distinction: Research on mast cells in adipose tissue is NOT the same as research showing that people with MCAS develop insulin resistance.

📚 Much of the evidence is experimental, and the relationship in humans remains uncertain.

🩺 As an integrative dietitian working with medically complex patients, I find these emerging connections fascinating.

🔍 But I also think it’s important to distinguish between a biological mechanism worth studying and a clinically established relationship.

🌿 When patients present with both histamine-related symptoms and metabolic concerns, we evaluate each carefully rather than assuming they’re connected.

✨ This is what integrative clinical thinking should look like: curiosity paired with evidence.

💚 At Isabel Smith Nutrition & Wellness, we specialize in personalized nutrition care for complex GI, histamine-related, and other medical concerns.

💬 Have you ever heard about the possible relationship between mast cells and metabolic health?

10/14/2026

🦠 SIBO recurrence isn’t always about the bacteria.

🔎 When symptoms return, it’s important to consider whether underlying contributors have been addressed.

💡 These may include impaired gut motility, chronic constipation, certain medications, structural abnormalities, or other digestive conditions.

⚠️ But recurrent bloating doesn’t automatically mean recurrent SIBO. Similar symptoms can have several different causes, making reassessment an important part of care.

🩺 At ISN, we look beyond isolated symptoms and test results to better understand the factors influencing your digestive health.

💬 Dealing with persistent or recurring digestive symptoms? DM us — we’d love to help!

📩 Comment “SIBO” and we’ll send our latest freebie, “SIBO Deep Dive: Exploring Factors to Reoccurring SIBO”.

10/12/2026

🔴 7 things I’ll NEVER do as an Integrative Dietitian

💬 After 13 years in practice, there are a few things I feel strongly about.

1. Treat lab results instead of people.
2. Put everyone on restrictive elimination diets.
3. Assume every symptom starts in the gut.
4. Recommend supplements without considering medical history.
5. Dismiss symptoms because routine labs look normal.
6. Order unnecessary testing.
7. Recommend intermittent fasting indiscriminately, especially to women or those with chronic illness or inadequate nourishment.

😔 So many patients have already tried EVERYTHING.

💊 More supplements. 🧪 More testing. 🚫 More restrictions.

💚 Integrative nutrition isn’t about doing more. It’s about knowing what to do, what NOT to do, and when to change direction.

🌿 Sometimes, the best recommendation is doing LESS.

👇 Which one surprised you most?

— Isabel

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