Fermented Grapes: Why Black Skin Matter

Published Sept 14th 2026

From Fermented Grapes to Cellular Healing: Why Polyphenols & Resveratrol Matter Now for Prediabetics and Diabetics

If you are categorized as “Black,” you likely know someone in your family who has been diagnosed with pre‑diabetes, diabetes, metabolic syndrome, insulin resistance, or glucose intolerance. Many of us don’t just know one person; we know several. And tragically, many of us also know loved ones who passed from complications, lost their sight, or endured amputations.

Here’s the truth:
Diabetes has touched almost every Black household in America.

As a caregiver to a diabetic parent, I know the fear, the confusion, and the heartbreak firsthand. Watching someone you love struggle with a preventable disease is painful; and that pain should ignite a fire in us to seek knowledge, take action, and change the narrative for our families.

Speaking of being mindful, GRID Holistic Living is launching a series that speaks directly to our communities; because every household has a story, and every story deserves tools, clarity, and hope.

As a holistic practitioner, what I know now versus what I knew when my mother was first diagnosed is night and day. Today, I am sharing the research, wisdom, and lived experience that I wish I had back then; the same knowledge I now use to prayerfully support you and your loved ones.

Although my mother is no longer with us, I can say with gratitude that her passing was not due to diabetes or any related complication. That truth fuels my commitment to teach what I’ve learned on this journey.

🌱 The First Truth: Many Diseases Begin with Mineral

This isn’t surface-level talk; this is research-backed, metabolic science.
And yet, most of us were never taught this.

Instead, we were told:

• “Avoid carbs.”

• “Eat more fiber.”

• “Fruit is bad.”

• “Fruit is good.”

Conflicting advice creates paralysis by analysis, leaving people confused, overwhelmed, and stuck. GRID Holistic Living is here to break that cycle.

🌟 The 7‑Part Mindful Monday Series

This Mindful Monday Series is designed to bring clarity, confidence, and calm back to your plate. Over the next 7 weeks, we’ll explore the seven research‑supported nutrients that global holistic experts and metabolic researchers consistently identify as essential for:

• Improving insulin sensitivity

• Lowering blood glucose

• Reducing inflammation

• Supporting long‑term metabolic healing

This series is not medical advice; always consult your physician before making dietary changes or adjusting medications.
But it is a powerful, culturally relevant, science‑supported guide to help you take an active role in your healing journey.

What is Polyphenols?

Polyphenols are one of the most powerful nutrient groups for anyone living with insulin resistance, pre-diabetes, diabetes, or metabolic syndrome. These plant-based compounds have been studied globally for their ability to improve insulin sensitivity, lower blood glucose, reduce inflammation, and protect cells from oxidative stress; all critical factors in metabolic healing.

GRID Holistic Living Link

Subsequent to completing Fermentation 101 Part 2: How to Ferment Grapes Into Wine, where we introduced one of the most famous polyphenols of all; resveratrol. This week builds directly on that foundation.

🍇 Why Polyphenols Matter for Insulin Resistance

Polyphenols are natural compounds found in deeply colored fruits, vegetables, herbs, teas, and fermented foods. They work at the cellular level to:

• Improve insulin signaling

• Reduce inflammation (a major driver of insulin resistance)

• Support glucose uptake

• Protect cells from oxidative stress

• Strengthen the gut microbiome, which directly influences blood sugar regulation

These benefits are supported by research from journals such as:

• Nutrients (polyphenols improve insulin sensitivity)

• Journal of Agricultural and Food Chemistry (resveratrol reduces oxidative stress)

• Diabetes & Metabolism Journal (polyphenols improve glucose metabolism)

🍷 Polyphenols & Fermentation: Why Grapes Are a Perfect Example

During GRID's Fermentation 101 Part 2 workshop, we explored how fermenting grapes into wine activates and enhances certain polyphenols, including: resveratrol, which is a powerful compound found in grape skins that has been shown to:

• Improve insulin sensitivity

• Reduce inflammation

• Support cardiovascular health

• Protect cells from oxidative damage

Fermentation doesn’t just preserve grapes; it transforms them, making polyphenols more bioavailable and easier for the body to use. This is why fermented foods are central to GRID’s holistic approach.

Best Polyphenol-Rich Foods for Insulin Resistance

Foods high in polyphenol include the following:

• Grapes (especially dark varieties)

• Blueberries

• Blackberries

• Pomegranates

• Cherries

Vegetables & Herbs

• Spinach

• Red onions

• Broccoli

• Turmeric

• Ginger

Beverages

• Green tea

• Hibiscus tea

• Fermented grape wine (in moderation, if appropriate)

Other Sources

• Dark chocolate (70%+)

• Extra virgin olive oil

• Flaxseed

• Fermented foods

🔥 How Polyphenols Support Your Healing Journey

For people who are insulin resistant or glucose compromised, polyphenols help:

• Reduce blood sugar spikes

• Improve fasting glucose

• Support weight management

• Reduce inflammation

• Protect against diabetes-related complications

This is why Week 1 begins here; with the nutrient group that sets the tone for the entire 7‑week series.

✨ Coach Adasa’s Mindful Monday Takeaway

Polyphenols are your first line of nutritional defense against insulin resistance. They are one of many rich source fruits mentioned in the bible. They are abundant, accessible, and deeply rooted in ancestral food traditions; including the fermented grape wine we just created together in GRID’s Fermentation 101 Part 2.

This week, focus on adding color, variety, and fermented polyphenol-rich foods into your meals.
Your cells will thank you.

Polyphenols & Insulin Sensitivity
Hanhineva, K., Törrönen, R., Bondia-Pons, I., Pekkinen, J., Kolehmainen, M., Mykkänen, H., & Poutanen, K. (2010). Impact of dietary polyphenols on carbohydrate metabolism. International Journal of Molecular Sciences, 11(4), 1365–1402. https://doi.org/10.3390/ijms11041365 (doi.org in Bing)

Polyphenols & Glucose Metabolism
Scalbert, A., Johnson, I. T., & Saltmarsh, M. (2005). Polyphenols: Antioxidants and beyond. The American Journal of Clinical Nutrition, 81(1), 215S–217S. https://doi.org/10.1093/ajcn/81.1.215S (doi.org in Bing)

Resveratrol & Insulin Resistance
Brasnyó, P., Molnár, G. A., Mohás, M., Markó, L., Laczy, B., Cseh, J., … Wittmann, I. (2011). Resveratrol improves insulin sensitivity, reduces oxidative stress and activates the Akt pathway in type 2 diabetic patients. British Journal of Nutrition, 106(3), 383–389. https://doi.org/10.1017/S0007114511000316 (doi.org in Bing)

Polyphenols & Oxidative Stress
Pandey, K. B., & Rizvi, S. I. (2009). Plant polyphenols as dietary antioxidants in human health and disease. Oxidative Medicine and Cellular Longevity, 2(5), 270–278. https://doi.org/10.4161/oxim.2.5.9498 (doi.org in Bing)

Fermentation & Bioavailability of Polyphenols
Hur, S. J., Lee, S. Y., Kim, Y. C., Choi, I., & Kim, G. B. (2014). Effect of fermentation on the antioxidant activity in plant-based foods. Food Chemistry, 160, 346–356. https://doi.org/10.1016/j.foodchem.2014.03.112 (doi.org in Bing)

Grapes, Wine, & Resveratrol
Baur, J. A., & Sinclair, D. A. (2006). Therapeutic potential of resveratrol: The in vivo evidence. Nature Reviews Drug Discovery, 5(6), 493–506. https://doi.org/10.1038/nrd2060