Yes there are many things that affect a persons ability to lose weight sustainably. Some people are not yet ready for that kind of weight loss. As a person continually develops into a habitually healthy individual they become more capable of rapid and sustainable weight loss.
As for qualifications I am a nutritionist and health coach. I am certified by the Institute for Integrative Nutrition and I am currently in the Institute for Functional Medicine’s Functional Medicine Practitioner Certification Program. Not that it’s relevant to nutrition but I also have double majors from CU Boulder in Psychology and Economics so I understand human behavior pretty well and from 2 unique perspectives, Psychology and Economics.
I’ve been working with clients as their nutritionist and health coach since early 2013. I work with people to get healthy and if losing a pound a day is what the person wants to do then I help them do it, and I have more than once.
And, additionally, I admit I don’t have much formal education but I’ve had lifelong exposure to food and nutrition concepts and a half dozen years of research.
You can see my website zaklyon.com for some client testimonials.