Dr. Gily Ionescu, MS MD · Internal medicine physician
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Free health calculators and plain-language guides. No login, and your numbers stay in your browser.
- Calculate how many calories you burnOver 800 activities, worked out for your weight
- Predict your child's adult heightThe Khamis-Roche method, with the arithmetic shown
- Find out how much you should weighIdeal weight and BMI, with a realistic range
- Calculate your BMRHow many calories you burn at rest
- Check which screenings you're due forYour age, sex and history, turned into a checklist
- Track your nutrientsOver 40 nutrients, against your own targets
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Which foods are highest in iron, magnesium, or vitamin K? NutriRank searches the full USDA database and ranks foods by nutrient, with % Daily Values personalized to your age, sex, and life stage.
Free to download · NutriRank Pro adds every nutrient from $2.99/mo
Log what you eat and VitalFill shows whether you are getting enough of every nutrient that matters — over 40 vitamins, minerals, and macronutrients, plus calories — filling up a visual body as your day goes on.
Free to use · Pro subscription adds the full nutrient set
Vital Growth plots height and weight against CDC growth charts and predicts adult height with the same Khamis-Roche method used in my web calculator — showing the real percentile behind a single number, and stating its own margin of error rather than a false precision.
Free to use · Premium adds full percentile tracking from $7.99/mo
Hi, I'm Dr. Gily Ionescu
I am an internal medicine physician and nutritionist with a master's degree in nutrition. For nearly two decades I have been building free tools and writing practical articles to help people take charge of their weight, their blood sugar, and their long-term health.
My approach is simple: take the best available evidence, strip away the hype, and translate it into plain language and concrete steps — the same way I counsel patients in my own clinic every day.
Practical Guides for Real Change
No hype, no fads — structured, referenced programs you can follow, written the way I explain things to my own patients.
Type 2 Diabetes Remission Guide
- What remission means, and who can realistically achieve it
- Food strategies backed by remission trials — explained simply
- How to work with your doctor as medications are reduced
- Meal patterns, movement, sleep and stress — the full picture
- Plain language: written for patients, not for doctors
📅 Launching early 2027
Try the free calculator first →
$39 $59
founding price — rises at launch
Delivered early 2027. Full refund within 30 days of delivery.
21 Days Biblical Diet Program
- A 21-day guided return to the original plant-based diet
- Day-by-day meals, simple recipes, and shopping guidance
- Scripture-rooted reflections pairing faith with health
- The modern science behind plant-based eating
- Designed for individuals, families, and church groups
📅 Launching early 2027
$29 $44
founding price — rises at launch
Delivered early 2027. Full refund within 30 days of delivery.
Data-Driven Tools for Your Phone
Built on the USDA food database, NIH Dietary Reference Intakes, and CDC growth references. Free to download, with an optional Premium subscription that adds the complete data set.
Pick any nutrient — vitamin, mineral, protein, fiber, amino acid or fatty acid — and see every food ranked from highest to lowest, with % Daily Values tailored to your age, sex, and life stage. Filter by diet or by any of 16 food groups.
Free · Pro from $2.99/mo, $19.99/yr, or $39.99 lifetime
Are you getting enough of what your body needs? Log your food and VitalFill tracks calories plus 40+ nutrients against your personal targets — showing, at a glance, which ones you have filled and which still fall short.
Free · Pro subscription adds the full nutrient set
See your child's real percentile on the CDC growth charts, not just a raw number, and a predicted adult height that states its own error band instead of a false precision. Built on the same Khamis-Roche method as my web calculator.
Free · Premium adds full percentile tracking from $7.99/moFree Weight Loss Calculators and Health Tools
Simple, accurate tools for the numbers that matter to your health.
Diabetes Remission Calculator
Is remission realistic for you? See where your profile sits against the trials — and the weight loss the people who got there achieved.
Check my profile →What Nutrients Am I Missing?
Enter one day of food and see which nutrients it supplied well, which look like gaps, and the specific foods that would close them.
Check my day →What Screenings Am I Due For?
Your age, sex, and a few honest answers, turned into a personalized checklist against the major USPSTF guidelines — what's due now, what's worth a conversation, and why.
Build my checklist →Ideal Weight & BMI
Find your body mass index and a realistic healthy weight range for your height and frame.
Calculate now →Basal Metabolic Rate
How many calories do you burn just staying alive? The starting point of every effective weight plan.
Calculate now →Food Calorie Calculator
Search the USDA database and get calories and full nutrition data for any food, in any quantity.
Look up a food →Exercise Calorie Counter
Over 800 activities: see exactly how long you need to walk, swim, or garden to burn a target number of calories.
Find your activity →Six-Minute Walk Test
The standard functional test in heart and lung conditions. Compare your distance against predicted normal for your age, sex, height and weight.
Calculate now →Biological Age Calculator
What age your blood work looks like, from the published Klemera-Doubal and PhenoAge algorithms, with the markers carrying the gap.
Work it out →Adult Height Predictor
How tall will a child end up? The mid-parental genetic estimate, with an honest range and what really influences growth.
Predict height →Child Growth & Percentiles
Height, weight and BMI plotted on the real CDC growth charts, with the percentile for a child's exact age in months.
Plot the chart →Rockport Fitness Test
Measure your aerobic capacity and VO2max with a simple one-mile walk, using NIH and ACSM norms.
Test your fitness →Weight Loss Timeline
The 3,500-calorie rule is wrong. See your realistic curve — fast at first, then flattening — and where the plateau arrives.
See my timeline →Top Foods by Nutrient
Which foods are highest in iron, potassium or vitamin K? Rank the USDA database by any nutrient.
Rank foods →Learn From a Doctor Who Writes Like a Human
Referenced, honest, and occasionally opinionated — on weight loss, prevention, nutrition, and the state of modern health care.
The Ten Commandments of Weight Loss
A memorable series on what works for lasting weight loss — genetics, plateaus, metabolism, and all.
Start the series →Lifestyle & Prevention
Why fruits and vegetables prevent disease, how nutrition needs change with age, and why prevention beats treatment.
Explore articles →On Vitamins & Supplements
Fifty billion dollars a year, and the trials have now reported — including the ones stopped early for harm. When less really is more.
Read the article →