I'm about 6 weeks out from my Certified Nutritionist exam and biochemistry is killing me. I have a health sciences background but my undergrad didn't go deep on metabolism pathways. I'm running into gluconeogenesis and Krebs cycle content that I barely touched in one bio class years ago.
Currently putting in about 2.5 hours a day and my overall practice scores are around 65–68%, which isn't where I want to be with 6 weeks left. The macronutrient and micronutrient sections feel fine — it's specifically the cellular metabolism and clinical assessment parts dragging my average down.
I've been using the official study guide plus Khan Academy for the biochem review. Wondering if that's the right approach or if there's something more targeted. The clinical assessment section also has a lot on anthropometric measurements and dietary recall methods that aren't clicking yet.
Anyone who's recently passed — was the biochemistry as heavy on the actual exam as the study materials suggest, or does it ease up a bit?
Biochem was maybe 20% of what I saw on the exam but it felt like the hardest 20%. You don't need every detail of every pathway — focus on what happens when things go wrong metabolically, not step-by-step chemistry.
The clinical assessment section was heavier than I expected. Dietary recall and 24-hour recall interpretation showed up multiple times.
Spend time on the DRI tables too — RDAs, AIs, and ULs for major micronutrients. I got probably 8–10 questions requiring specific values and it's easy points if you've memorized them.
Your 65–68% at 6 weeks out is about where I was and I passed with 79% on the real thing. The last 3 weeks made the biggest difference. Keep pushing on the weak areas.
Also — make a one-page cheat sheet with BMI cutoffs, waist circumference cutoffs, and tricep skinfold norms and drill it until it's automatic. The anthropometric section rewards memorization.
Khan Academy is actually great for this. I did the same combination and it helped more than re-reading the textbook. The visual diagrams for the Krebs cycle finally made it click after weeks of reading about it.
The biochemistry section was rough for me too, but honestly it's not as deep as I was afraid it'd be. I work full-time and was only getting maybe 45 minutes on weeknights, so I had to be really strategic. What helped most was drilling practice questions focused specifically on metabolism rather than re-reading my notes. I found free cn nutritional science biochemistry questions online and just hammered those until the patterns clicked. Krebs cycle showed up but not at the level where you need to memorize every enzyme substrate.
Six weeks is plenty if you don't spread yourself thin. I'd spend the first two weeks just on biochem and glycolysis/gluconeogenesis, then shift to the other domains. You probably understand the concepts better than you think you do from your health sciences background. It's mostly pattern recognition once you've seen enough questions.
Ugh, I felt this post in my soul. I'm about 4 weeks out now and biochemistry was wrecking me until I found some targeted practice sets. I just scored a 74 on my last practice exam, which isn't amazing but it's a huge jump from the 58 I got two weeks ago, so I'll take it. The Krebs cycle stuff started clicking once I stopped trying to memorize every enzyme and just focused on where ATP and NADH are actually produced.
For the biochem section specifically, these free cn nutritional science biochemistry questions helped me figure out exactly which gaps I had. Honestly the section isn't as brutal as I expected once you know what they actually test. I'm planning to sit the real exam in early August, fingers crossed the score keeps climbing between now and then.