How Levels can help you find your optimal diet
Eating for better health can help you increase energy, manage weight and reduce disease risk. Here's how Levels helps you uncover the diet that works best for your body and goals.
If you're confused about what to eat, you're not alone. Eight in ten people say they come across conflicting information about nutrition, and 60% say it makes them doubt their food choices.
Part of the challenge is that it's difficult to do highly reliable nutrition studies, and experts are still arguing about fundamental questions like the root of weight gain or how to think about cholesterol.
The truth is that there is no one perfect diet that works for everyone all the time. Our bodies and circumstances are all different and require different nutrition to function best at any given moment.
But that is actually great news. It means you have more nutritional freedom than you might think: just about any nutritional approach, from keto to vegan to paleo, can be optimized for your individual health. The key? Getting precise, unambiguous data about how food---and the behavior around it---impacts your body through comprehensive biomarker testing, intelligent food tracking, and expert guidance.
Here's how using Levels can cut through the clutter and confusion to unlock your optimal diet.
What do we mean by optimal diet?
Optimal is a key word here as it recognizes that your ideal diet depends not only on your physiology but also on your goals: are you trying to lose weight? To build muscle? To improve specific biomarkers? To manage a chronic condition? What works for you will change over time, so we define optimal as a diet that helps you meet your needs while adhering to several fundamental principles:
1. The ideal diet should support your biomarker goals
Your blood work reveals how well your body is actually functioning and responding to your dietary choices. Different health goals require attention to different biomarkers:
- For cardiovascular health: You might focus on improving ApoB, triglycerides, or inflammatory markers like hs-CRP by adjusting saturated fat intake, increasing fiber, or optimizing omega-3 levels
- For metabolic health: You could work on improving fasting insulin, HbA1c, or glucose patterns by managing carbohydrate timing and quality
- For hormonal balance: You might optimize protein intake and micronutrients that support hormone production
- For inflammation: You could focus on anti-inflammatory foods while identifying and eliminating personal trigger foods
Levels' comprehensive blood testing lets you see exactly how your dietary choices affect these markers over time, providing objective feedback on what's working and what needs adjustment.
2. The ideal diet should support stable glucose
Glucose is the primary fuel source for every cell in your body. When your metabolic machinery functions well, you feel and operate at your best. When it doesn't, systems break down, and the implications can be short-term (fatigue, brain fog) or long-term (chronic disease).
For those using continuous glucose monitoring, you can see in real-time how different foods affect your blood sugar. What causes glucose spikes varies dramatically between individuals---some people can eat rice with minimal response, while others see significant spikes from foods like oatmeal or bananas.
3. The ideal diet delivers adequate protein and fiber
Most of us don't consume enough of these two vital macronutrients. Protein is essential for muscle maintenance, immune function, and helps stabilize blood sugar responses. While the recommended daily amount is 0.8g/kg of body weight, optimal may be closer to 1.2-2g/kg depending on your goals and activity level.
Fiber helps slow glucose absorption, feeds beneficial gut bacteria, and supports cardiovascular health. The USDA recommends 22-34 grams daily, but many experts suggest closer to 50 grams for optimal health.
4. The ideal diet contains enough micronutrients
Your body needs a wide variety of vitamins, minerals, and antioxidants to function optimally. These serve as crucial components in cellular processes and can directly impact your biomarkers. For example, magnesium affects glucose metabolism, vitamin D influences immune function, and B vitamins support energy production.
Levels' comprehensive blood testing can reveal micronutrient deficiencies that might be affecting your energy, mood, or long-term health, allowing you to address them through targeted dietary changes.
Why your diet is unique to you
Certain principles apply to nearly everyone trying to be healthy. However, our specific needs vary dramatically depending on genetics, age, activity level, health conditions, and even gut microbiome composition.
This individuality was most dramatically shown in an Israeli study where 800 participants wore continuous glucose monitors and ate standardized foods. Two people ate a banana and a cookie, each containing around 20g of carbs, but had completely opposite glucose responses. Researchers found similar variation with bread, with glucose rises varying from 15 mg/dL to 130 mg/dL between individuals.
But it's not just glucose responses that vary. Your biomarker responses to different dietary patterns can be equally individual. Some people thrive on higher-fat diets and see improved cholesterol profiles, while others do better with higher-carb, lower-fat approaches.
How Levels helps you discover your optimal approach
Comprehensive food tracking and analysis
AI-powered meal logging makes it effortless to track what you eat through text, photos, or barcodes. You get detailed macro breakdowns showing protein, fat, carbs, fiber, and sugar for every meal.
Personalized food insights analyze your meals and provide recommendations based on your health goals and biomarker results. The system suggests ingredient swaps, recipe ideas, and meal timing strategies tailored to your specific needs.
Macro optimization helps you see whether you're hitting your protein targets, getting enough fiber, or consuming too many refined carbs relative to your goals.
Real-time feedback
For members using continuous glucose monitoring, you can see immediately how different foods, meal timing, and food combinations affect your blood sugar. The meal comparison feature lets you test foods head-to-head to discover your personal responses.
You can also see how non-food factors like sleep quality, exercise timing, and stress levels influence your glucose responses to the same foods.
Long-term biomarker tracking
Regular blood testing shows you how your dietary changes are affecting key health markers over time. You can see whether reducing saturated fat improves your cholesterol profile, whether increasing fiber lowers inflammatory markers, or whether adjusting carbohydrate intake optimizes your metabolic health.
Trend analysis across up to 90 days helps you connect consistent dietary changes to measurable health improvements, providing motivation to stick with approaches that are genuinely working for your body.
Context matters: How lifestyle affects your diet
It's not just your physiology that impacts your response to food---context matters too. How you slept last night, when you exercised, the order in which you eat, stress levels---all of these can cause different responses to the same foods.
For example, one study showed that even one night of four hours of sleep impaired otherwise healthy adults' ability to process glucose the next day. Chronic stress can affect how your body handles carbohydrates and can influence inflammatory markers.
How Levels helps:
- Comprehensive habit tracking integrates sleep, exercise, and stress data with your food logs.
- AI-powered insights surface patterns like "Your late-night meals correlate with elevated morning glucose" or "Your inflammatory markers improve on weeks with consistent sleep."
- The app factors lifestyle context into meal recommendations and insights.
Why long-term trends matter
Eating for optimal health is not a hack or quick fix. Instead, it's about finding habits and foods that work for you so you can sustain them over time, building long-term health and keeping your body functioning optimally as you age. You don't need to be perfect---you need to be moving in the right direction.
Levels shows you:
- Up to 90 days of data across multiple health metrics
- How consistent dietary changes translate to biomarker improvements
- Whether your approach is sustainable and enjoyable long-term
Regular testing through Levels Labs lets you monitor dozens of health markers, including metabolic indicators (insulin, HbA1c), cardiovascular risk factors (ApoB, triglycerides), inflammatory markers (hs-CRP), and micronutrients. Results appear directly in the app with personalized guidance for optimization.
Your personalized nutrition journey
Finding your optimal diet is a journey of discovery, not a destination. With Levels, you have the tools to experiment intelligently: comprehensive biomarker testing to set baselines and track progress, detailed food analysis to understand what you're actually eating, expert guidance to interpret your data, and optional real-time feedback to fine-tune your choices.
Whether your goal is improving energy, optimizing athletic performance, managing a health condition, or simply feeling your best, Levels provides the data and support you need to discover the dietary approach that works best for your unique body and life.
Take control of your health with expert guidance
Levels pairs real-time glucose data and comprehensive lab testing with clinician analysis and personalized support—everything you need to turn insights into real health improvements. Click here to get started with Levels.
