@RodrickSage
The national academy of sports medicine offers at least 3 certificates that focus on nutrition
You might be able to make money helping people with nutrition from at home while also losing weight if you get one of their products
The national academy of sports medicine is among the top 6 most common organizations that people use for personal trainer certification
Their personal trainer certifIcate is often mentioned by exercise science teachers & students
https://blog.nasm.org/comparing-nasms-three-nutrition-programs-cnc-cwc-csnc
@RodrickSage
Ace also offers a weight management certificate and a fitness nutrition certificate
ACE is also in the top 6 most commonly used organizations for personal trainer certification
https://www.acefitness.org/continuing-education/specialist-programs/weight-management/
I think the ACE certificates might be cheaper
But I think the NASM might have a higher level of academics though because they provide exercise physiology certifucates to people with bachelor degrees in specific fields and I think I have seen them cited as a source in Universities