Hi, I'm Dr Gily

I am a practicing primary care physician. My site has a variety of items, from articles on healthful living, prevention, weight loss, to personal musings on the status of health care in the Western world, to links to other sites I have created. My main audience is the general public, with the exception of the ICD-9 codes and ICD-10 codes search tools, which are intended for health care providers and coders.

Feel free to explore and if you find something interesting, please share it with your friends.



Featured Articles

Burn 300 calories
I Need To Burn 300 or 1,000 Calories

I put together this easy to use exercise duration calculator to help you figure out how much (or rather how long) of any particular type of exercise you need to do in order to burn a specific number of calories.

In other words, if you wanted to know for how long you need to walk your dog outside to burn, say, 500 calories, this is the tool you want to use.

I have used a comprehensive compendium of physical activities that allows searching for more than 800 different types of exercise. So you shouldn't have any problem finding your favorite exercise.

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Rockport Walk Test
The Rockport Walk Test

Want to know how fit you are? Check out our new fitness tool to measure your aerobic capacity and VO2max!

Based on norms from the by National Institute of Health and the American College of Sports Medicine.

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10 commandments for weight loss
The Ten Commandments For Weight Loss

I recently started a series of articles on how to lose weight. I am using the ten commandment format, to help me organize things and you to remember them better. I will update the list with the appropriate links as soon as I finish each article. Have fun!

  1. You Shall Have No Other Weight Loss Gods.
  2. You Shall Not Make For Yourself A Carved Image Or Any Weight Loss Idol
  3. You Shall Not Take Your Body's Chemistry In Vain
  4. Remember to Rest & Accept Weight Loss Plateaus
  5. Your Mother's and Your Father's Genes Count
exercise for weight loss
How Much Exercise Is Needed For Weight Loss?

I often see overweight or obese patients who are very frustrated that exercise is not working for them. The usual story involves a few days or weeks of increased physical activity, with little or no benefit for weight loss.

What is going on? Why is losing weight so difficult?

This article aims to shed some light on this issue. Rather than using abstract/technical concepts, I am using a day in the life of my 86 year-old father to illustrate how much exercise is needed to have a positive impact on weight.

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Main Categories

Health eTools

A collection of useful health calculators: ideal body weight, body mass index, calories burned by exercise, and others.

Health eTools
Dr Gily Ionescu

My musings on a variety of topics related to health, disease prevention and health care policy and delivery in the 21st century.


Articles on various aspects of disease prevention, diet, supplement and vitamin use, and other topics.


My Other Sites

ICD-10 Codes
ICD-10 Codes For Diabetes

Diabetes coding is notoriously challenging in ICD-9, and ICD-10-CM is likely to create even more confusion. I wrote this guide to make things easier.

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Evolution Issues
Evolutions Issues

Modern humans accumulate at least 50 new germline mutations per generation. But when examined, the data is in striking contrast with what would be expected from neo-Darwinian predictions.

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Vegetarian Nutrition
Vegetarian Nutrition

A highly recommended resource on healthy eating written by my friend, Dr Winston Craig.

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