Meet the Team


Kari Collett, RDN, LDN, CLT
Owner/Licensed Dietitian 

Kari’s enthusiasm about health and nutrition is incredible! Once you meet her, you’ll understand more about her deep-rooted passion for the power of food and nutrients. This passion started over a decade ago when Kari hit a major life roadblock. Instead of giving up, Kari took up marathon training. All that running made her hungry! Having to eat more pushed her into looking more closely at how food affected running performance. Not only did she discover that eating the right foods could improve her running time, but they also shortened her recovery time. Fascinated by her experiments and research, she found herself diving deeper into other aspects of food: agriculture, production, processing, and more. Before she knew it, she was in love! And pursuing a new career.

Today, Kari is a Registered and Licensed Dietitian specializing in functional nutrition. With additional training specific to food sensitivities, she is also a Certified LEAP Therapist. Coupling education from the College of St. Benedict and Iowa State University with life experiences, Kari helps people reach optimal states of health and function. She is diverse in the population she serves in that she provides individualized nutrition services for those with food sensitivities, chronic pain and disease, weight loss goals, athletic performance goals, and more using whole food therapies, supplements, and mind-body exercises for the health and healing of clients.

Kari is currently partaking in a higher-level functional nutrition training course that will eventually have her certified in functional medicine nutrition. Every new thing she learns and applies to her patient’s customized programs improve their outcomes!

Kari’s passion is inspiring! You’ll love working with her, and you’ll love the outcomes you obtain through your unique nutrition plan.

  • Listen to an interview with Kari at WJON Health Talk about the benefits of fat on health matters. Click here.
  • Listen to an interview with Kari at WJON Health Talk about protein. Click here.
  • Got Raw Milk – Study and Results Click here.
Tanya Lieser
Office Manager

Tanya Lieser is the Office Manager for A to Zinc Nutrition. Tanya brings over 10 years of administrative experience in Office Management, Operations Management, and Executive Assistant.

Tanya, has recently moved back to the Saint Joseph community after being absent for 9 years. She enjoyed her time in South Carolina, however it was time to return home. She really enjoys spending time with her husband, four children and new grandson. She also enjoys escaping to Charleston, SC, as much as possible, anything to be near the ocean for a beautiful sunrise. She loves crafting, cooking, and being a “sports” mom.

Nutrition Health Check

Take a nutrition health check and see your results.

5 Minutes Can Make a Big Difference: Best Cooking Methods for Preserving Nutrients

Kari Collett, RDN, LDN, CLT with A to Zinc Nutrition, LLC

What do fishing and blood glucose levels have in common?

Understanding Low Blood Sugars Glucose, Insulin, & Hypoglycemia Kari Collett, RDN, LDN, CLT Helpful definitions. Glucose: Source of energy for our body that comes from the food we eat, specifically carbohydrates and proteins. Insulin: Hormone produced by the pancreas that allows glucose into body cells for energy production. Hyperglycemia:  Condition caused by elevated blood glucose levels. If you notice symptoms such as

Raw vs. Cooked

Kari Collett, RDN, LDN, CLT with A to Zinc Nutrition, LLC

Weight Loss Without Calorie Counting

Kari Collett, RDN, LDN, CLT with A to Zinc Nutrition, LLC   Dump the old way of thinking about weight loss and embrace a better way!