60 Day Weight Loss Challenge

Lose Weight, Feel Better, Live Healthier 


About Us



Many struggle with weight and healthy eating, including your healthcare professionals. OnCall Weight Loss started as a trial program to help our staff, family and friends lose weight, feel better and live healthier. Our goal was to create a program which is easy to understand, easy to follow and therefore easy to stick with. 


If you are someone who wants to lose a little weight, needs to lose a lot or maybe you just want to feel better, we welcome you to join us on our health and weight loss journey. Our goal is to be an example of how small changes and short term goals can lead to healthier lifestyle habits and lasting weight loss results. 

How much have members lost?

58 lbs

Record for most weight lost with OnCall Weight Loss so far.

What is the 60 Day Weight Loss Challenge?



OnCall Weight Loss's 60 Day Challenge consists of 4 parts over a 60 day period. Each part introduces members to a different way of eating and thinking about the foods we eat.

As you go through this program you will learn about foods and you will take steps to develop better habits and lasting weight loss results.

Part 1

Maintain your normal diet and develop two fundamental habits that promote healthier eating.

Days 1 - 7

Part 2

Continue Part 1 daily habits and start your first 10 day plant based challenge.

Days 8 - 17

Part 3

Change diet to a new 21 Day Challenge focused on high fats, moderate proteins and low carbs.

Days 18 - 38

Part 4

You're almost there, you can do it!! Finish strong with a final calorie restricted diet challenge.

Days 39 - 60

Commit 60 Days, give it your all and see what results you can achieve.

At the end of the 60 Day Challenge you can choose to continue on in pursuit of your larger health and weight loss goals or, if you've met your goals, slowly reintroduce foods back into your diet.

We look forward to being part of your health and weight loss journey.

Weight Loss Trend Example

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60 Day
Post Challenge
Continued Maintenance

Program Creator


Wendy Markovich, MSN-FNP

I created OnCall Weight Loss after struggling with the excess weight of having two children. I became frustrated at not being able to lose the weight with my busy schedule, no time to exercise, working full time and being a mom and wife. Fitting a diet into my hectic schedule did not seem possible. I started to think of ways I could incorporate multiple weight loss strategies into one program. I designed a program for myself and, in discussing it with friends and family, we decided to do it together (our first trial group). Our diverse group went through the 60 day program and amazingly...we ALL had very successful results. By the end of the 60 days I lost 26 pounds and 2 months into Post Challenge Continued Maintenance, I was down 51 pounds total. Since all the trial participants experienced positive benefits and weight loss, we created OnCall Weight Loss as a program that can hopefully help others like it has helped me. 

Where is OnCall Weight Loss Available?

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Contact Us 

OnCall Weight loss

An Arizona based Company

Office Hours: M-F 8am - 5pm MST

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