Would you like to work in the field of nutrition or health coaching? Here are some programs to look into

In most of the US, the only way to become a Licensed Nutritionist is to become a Registered Dietitian which is about 3-4 years of full time in-person study at an accredited university. I went to Keiser University in Florida which offers a coordinated BSc Dietetics & Nutrition program with a guaranteed 9 month hospital internship which helps get you get to the finish line faster so you can sit for your national examination.

However, if you don't need to be licensed in your state in order to practice nutrition, there are a few different programs one can pursue including these listed below which generally take 1-3 years of study depending on if you are part time or full time. At the bottom of the page, there are some specialization program options for existing health practitioners.

Nutritional Therapy Association
Offering programs for becoming a Nutritional Therapy Practitioner (NTP) or Nutritional Therapy Consultant (NTC)
https://www.nutritionaltherapy.com/

Functional Medicine Certified Health Coach & Institute For Functional Medicine
In collaboration with the Institute for Functional Medicine (IFM)
https://www.functionalmedicinecoaching.org/

Nutritional Therapy Association - Foundational Holistic Nutrition
Nutritional Therapy Practitioner (NTP)

Nutrition Therapy Institute
Nutrition Therapy Practitioner (NTP) and Master Nutrition Therapist (MTP) 

Hawthorn University
Offering several degree and certification programs in the health and nutrition field including: Master of Science in Holistic Nutrition (MSHN), Nutrition Consultant Certificate (NC), Doctor of Science in Holistic Nutrition (DSC) and Master of Science in Traditional Nutrition (MSTN)

Institute for Integrative Nutrition
Certified Health Coach (CHC)

Institute for Transformational Nutrition
http://transformationalnutrition.com

Trinity School of Natural Health
(aka. National Association of Certified Natural Health Professionals)
Certified Natural Health Professional (CNHP), Certified Holistic Health Practitioner (CHHP)
https://www.trinityschool.org/

SPECIALIZATIONS
Offered to existing licensed or certified health practitioners or coaches to further their education

BioIndividual Nutrition Institute
Founded by Julie Matthews, NC - http://bioindividualnutrition.com/

Functional Medicine University
http://www.functionalmedicineuniversity.com/

Certified Gluten Practitioner
Dr. Tom O'Bryan's course: https://thedr.com/cgp-home/

Restorative Wellness Solutions
Level 1 Restorative Wellness Practitioner. Graduates of both Level 1 and Level 2 will be certified as a Restorative Wellness Specialist and receive CECs.
http://restorativewellnesssolutions.com