Section 02 of 09 • 11 insights
Metabolism and Digestion
Same meal, two people. One feels amazing. You feel like a balloon for six hours.
The Real Reason Some Foods Love You Back — While Others Quietly Sabotage You
From the report
The biology this section covers.
This section explores how your genetics influence the way your body processes and responds to specific foods and compounds. Understanding these genetic variations helps explain why certain foods work well for some people but cause problems for others and allows you to make more informed choices about what you eat and drink.
The story this section tells
What your DNA is doing under the hood. Why it matters today.
Digestion isn't controlled by a single system—it's made up of dozens of enzymes, each with its own genetic setting. You might process lactose without issues, but struggle with caffeine. You thrive on grains but may over-absorb plant sterols.
Instead of eliminating foods for months and guessing, you'll know which dials are turned down—and which foods were never the problem.
This one is for you if…
You've tried every elimination diet and still feel lost.
What you'll see in your Metabolism and Digestion report.
Every insight below appears as a personalized dark card in your full Mosaic report, with a color marker tuned to your specific genetic variants and a practical next step you can act on.
Food & Beverage Processing
9 insights
Caffeine Jitters
Adenosine receptor variants decide whether coffee feels like rocket fuel or instant anxiety. Your version tells you if caffeine is a legitimate performance tool—or a stressor you've been dosing yourself with daily without realizing the cost.
Read insight →Caffeine Metabolism
Fast metabolizers clear caffeine in 3–4 hours; slow metabolizers still have half left at bedtime. This explains why some people drink espresso at 8 p.m. and sleep like babies—and why that will never be you (or vice versa).
Read insight →Gluten Related Immune Response Risk
Beyond celiac, some immune systems quietly react to gluten with brain fog, joint pain, or fatigue. Knowing your risk clarifies whether going gluten-free is medically relevant or just trendy—for you specifically.
Read insight →Grain Sensitivity
Certain grain compounds can shift excitatory neurotransmitters in sensitive people. If you're one of them, bread or takeout can trigger anxiety, restlessness, or poor sleep without any classic digestive symptoms. It looks like "stress," but it's dinner.
Read insight →Impact of Dairy Fat on Weight
Full-fat dairy makes some people leaner (better satiety, improved hormones); others store it straight to their waistlines. Your genotype predicts which camp you're in—and settles the skim vs. whole milk debate for good.
Read insight →Lactose Intolerance Risk
Most adults down-regulate lactase after childhood—it's the ancestral norm. Knowing your persistence level predicts whether milk, yogurt, and ice cream will stay friends or become enemies. No more wondering if it's "just in your head."
Read insight →Green Tea Extract Risk
Concentrated EGCG (the active compound in green tea) is liver-protective for most people—but potentially toxic in high doses for a small genetic group. Your processing capacity decides whether 800 mg capsules are a smart supplement or a risk you shouldn't take.
Read insight →Plant Sterol Accumulation Potential
Plant sterols lower cholesterol for about 90% of people, but the other 10% absorb too much and can deposit it in the arteries. Knowing which group you're in decides whether sterol-fortified foods are helpful or quietly harmful.
Read insight →Plant Sterol Benefit
High responders can lower LDL 10–15% with diet alone by prioritizing the right plant foods. If that's you, vegetables just became a legitimate cholesterol intervention—not just "eat your greens" hand-waving.
Read insight →
Blood Sugar & Metabolism
2 insights
Insulin Resistance
Genetic predisposition to insulin resistance varies widely—and it's not just about weight. Higher-risk individuals benefit from earlier carb timing, resistance training, and preventive strategies, often decades before blood sugar becomes an official problem.
Read insight →Metformin Response Effectiveness
Some people drop HbA1c dramatically on metformin; others see little change and mostly GI distress. Your variant predicts which response you'll have—valuable information before months of trial and error.
Read insight →
For practitioners
Using Metabolism and Digestion in clinical practice.
Reveal true lactose persistence, grain sensitivity, caffeine clearance, and insulin-response genotypes, elevating your ability to fine-tune nutrition with clinical confidence.
About provider accounts →What to read next.
The 9 areas of your biology are interconnected: your appetite genes talk to your sleep genes, your detox pathways shape your hormone clearance. Each one informs the others.
See your metabolism and digestion insights.
Order your kit. Receive your full 108-insight report in 15–20 days.