Knowledge
Short answers on what the app calculates and what it deliberately does not do. Every number has a source.
Last updated: November 2026 · Light recipes with nutrition
Topic areas
Basics
Energy and deficit
How much energy you need, what a deficit means and why the app shows ranges.
- How much energy do I need?How the app estimates your daily needs, which formula it uses and where the limits are.
- What a calorie deficit meansWhat a deficit is, how large it can be, and why the type of diet matters less than you might think.
- Why the app shows rangesNeeds, label values and portions are all imprecise. That is why the app shows ranges instead of a single number.
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All 33 articles from A to Z
- Alcohol and losing weightHow much energy drinks contain, how alcohol affects eating, fat burning and sleep, and what the DGE and WHO advise.Food and drink / Fasting and alcohol
- BMI and waist size: what they say and what they don'tHow BMI, waist size and waist-to-height ratio are classified, where their limits lie and what they say about a single person.Basics / Measuring the body
- Boron: no confirmed benefit, clear limitsWhy boron has no authorised claim, what the few studies on testosterone show and where the BfR sees the maximum level.Food supplements / Minerals
- Caffeine: training, sleep and limitsWhat caffeine can do in sport, why it harms sleep, which amounts EFSA considers safe and why no claim is authorised.Food supplements / Caffeine
- Creatine and sleep loss: how thin the evidence isWhat the few studies on creatine and sleep deprivation measured, at which doses, in whom, and why no recommendation follows from them.Food supplements / Creatine
- Creatine: what the research showsForms, amounts used in studies, performance and muscle, water on the scale while losing weight and the most common myths, with sources.Food supplements / Creatine
- Eating out without the mathsHow much energy restaurant meals can have, whether eating out adds weight, what menu calories do and how to log it calmly.Everyday life / Out and moving
- Electrolytes: when they matterSodium, potassium and magnesium in training, sweating and weight loss: what expert bodies say and when electrolyte drinks are worth thinking about at all.Food supplements / Minerals
- Exercise and losing weightWhat the WHO recommends, what movement and steps do for weight, why strength training counts and what sitting means.Everyday life / Out and moving
- Fat burners and slimming products: what the research saysL-carnitine, glucomannan and fat burners checked: why products change little, what the risks are and what is allowed.Food supplements / Making sense of it
- Food cravings: what is behind themWhere cravings come from, how stress and the cycle play in, and what studies really show about common tips.Everyday life / Hunger, stress and sleep
- How much energy do I need?How the app estimates your daily needs, which formula it uses and where the limits are.Basics / Energy and deficit
- How much protein makes sense?How much protein makes sense for losing weight, training and building muscle, with the ranges from research.Food and drink / Protein and fibre
- Keeping weight off: what we know about the yo-yo effectHow often weight comes back, what is true about the yo-yo effect, what the 95 percent figure is worth and what goes with keeping it off.Basics / Weight over time
- Low carb, keto and Mediterranean diets comparedWhat low carb, keto and Mediterranean eating are, what long-term studies show, what counts in the end and who should be careful with keto.Food and drink / Diets and foods
- Magnesium: what is shown and what is notCramps, sleep, training and weight: what studies on magnesium show, which claims are authorised and where the upper limits lie.Food supplements / Minerals
- Making sense of food supplementsWhat food supplements are in law, what an authorised claim means and how to tell a sound statement from an empty one.Food supplements / Making sense of it
- Omega-3: what capsules can and cannot doDHA and EPA in research and in the EU Register: what is known on heart, weight, muscle and soreness, and where the limits are.Food supplements / Vitamin D and omega-3
- Sleep and weightWhat studies show on sleep, hunger and weight, what helps you sleep, and how caffeine, shift work and sleep apnoea fit in.Everyday life / Hunger, stress and sleep
- Strength training and muscle during weight lossHow much muscle is lost during weight loss, what strength training and protein really do, and what older adults should know.Everyday life / Out and moving
- Stress and emotional eatingWhat emotional eating is, how stress and cortisol fit in, what can help and when it is time to get support.Everyday life / Hunger, stress and sleep
- Sweeteners and sugar alcohols: what applies, who tolerates whatAspartame, sucralose, stevia, erythritol, xylitol and sorbitol: EU approval, EFSA assessment, open questions, and tolerance with IBS and phenylketonuria.Food and drink / Sweet without sugar
- Ultra-processed food, sugar, juice: what really countsWhat ultra-processed foods are, what studies show, how much sugar the WHO names and why drinks are so easily overlooked.Food and drink / Diets and foods
- Vitamin D: needs, limits and researchWhat the DGE, BfR and EFSA say about vitamin D, what studies show on weight and strength and where the upper limits lie.Food supplements / Vitamin D and omega-3
- Weight-loss injections: effects, risks and stoppingWhat GLP-1 medicines like semaglutide and tirzepatide are, who they are approved for, what risks they carry and what happens after stopping.Health / Medicines
- What a calorie deficit meansWhat a deficit is, how large it can be, and why the type of diet matters less than you might think.Basics / Energy and deficit
- What studies show about intermittent fastingForms of intermittent fasting, what large studies found on weight, and which questions remain open.Food and drink / Fasting and alcohol
- When to get medical adviceSigns and situations where talking to a doctor matters more than any app.Health / Getting help
- When your weight stops movingWhy weight loss often stalls after some months, what is true about metabolism, what diet breaks do and what you can check.Basics / Weight over time
- Why fibre countsHow much fibre makes sense, what it does when losing weight, and where to find it.Food and drink / Protein and fibre
- Why the app gives no target dateWhy weight cannot be predicted with a simple calculation, and what the app shows instead.Basics / Weight over time
- Why the app shows rangesNeeds, label values and portions are all imprecise. That is why the app shows ranges instead of a single number.Basics / Energy and deficit
- Why the scales go up and downWater, salt, gut content, cycle and medicines: why a daily value says little about body fat and how often weighing makes sense.Basics / Weight over time