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  2. Oct 21, 2026

Five Foods Proven to Boost Your Immune System | Dr. Niki Davis

Five Foods Proven to Boost Your Immune System | Dr. Niki Davis

Can a bag of frozen berries earn a place on your immune-health grocery list? What do beans and mushrooms bring to the table?

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Dr. Niki Davis from Lifestyle Telemedicine joins Chuck Carroll on The Exam Room to explore five foods and food groups for supporting a healthy immune system, with practical ideas for cold and flu season.

Her five picks:
  • Mushrooms
  • Beans, peas, and lentils
  • Leafy greens and cruciferous vegetables
  • Berries
  • Sweet potatoes

Learn why Dr. Davis highlights beta-glucans in mushrooms, how gut bacteria turn fiber into butyrate, and why variety matters when choosing plant foods. The conversation also covers broccoli and sulforaphane, frozen versus fresh berries, and different sweet potato varieties.

Beyond the plate, Dr. Davis discusses movement, strength training, sleep, and stress. Audience questions explore oxalates and kidney stones, dairy, yogurt and kefir, probiotics after antibiotics, and eating with Hashimoto's.

Plus, Chuck shares his experience eating a mushroom steak at Crossroads Kitchen in Las Vegas, and Dr. Davis reveals her favorite frozen blueberries.

Exam Roomie of the Week
  • Andrea Csuvay

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