Lean With Plants vs Optavia

Packaged Fuelings and a peer coach, or regular groceries and a trained one. The difference shows later.

By Chelsea Mae · September 20, 2026 · 8 min read

Optavia and Lean With Plants take opposite approaches to the same goal. Optavia, which Medifast rebranded as the Trilivy Metabolic Health System in July 2026, is a packaged-food program: you eat several portion-controlled Fuelings a day plus one meal you cook yourself, supported by an independent coach. Lean With Plants is a 12-week one-on-one plant-based weight loss coaching program for women, founded by Chelsea Mae Cullen, where you eat ordinary grocery-store food and learn a way of building a plate that still works when the program is over. One removes decisions. The other teaches them.

How Optavia works

The core structure has stayed consistent through the Trilivy rebrand:

• Fuelings. Portion-controlled, fortified packaged products (bars, shakes, soups, snacks) that you buy from the company. On the most common plan you eat five of them a day.
• A Lean and Green meal. One meal a day that you cook yourself, built from a lean protein and non-starchy vegetables, with specified portion sizes.
• Phases. The rebranded Trilivy system frames the journey as Reset, Refine and Renew, moving from initial weight loss through to maintenance.
• An independent coach. Coaches are independent distributors within a direct selling structure, and most of them are former clients who went through the program themselves. Support is typically frequent, informal and by text, and community groups are a big part of the experience.

Credit where it is due. The single biggest reason people succeed on Optavia is that it strips out decisions. If you are exhausted, overwhelmed, and the thought of planning another week of meals makes you want to lie down, a box that tells you exactly what to eat five times a day is an enormous relief. That is not a trivial benefit. For a lot of people, it is the difference between starting and not starting.

The coaches are also, in our experience of what clients report, warm and very available. Someone who has actually lost the weight on the same plan is a credible source of encouragement, and many Optavia coaches are exactly that.

How Lean With Plants works

Lean With Plants is a 12-week coaching program for women, built on three pillars:

1. Nutrition through calorie density. How many calories are packed into a pound of food. Oil is roughly 4,000 calories per pound. Non-starchy vegetables are roughly 100 calories per pound. Once you build a plate around the low end of that range, you can eat a large physical volume of food, feel full, and lose weight without counting anything. Read calorie density explained for the full picture.
2. Fitness and movement, scaled to a real body and a real week.
3. Accountability and habits, through the STACK Method, which builds small behaviors that stack into an autopilot routine so the results hold after week 12.

You work with a dedicated coach who checks in and messages you daily in the LWP app, looks at photos of your plate and coaches you through the week, plus a weekly community group coaching call and a Q&A every two weeks. We have coached over 3,000 women, the average client loses around 18 pounds in 12 weeks, and most are in their forties, fifties and sixties.

There is no food to buy from us. There are no shakes, no bars, no supplements and no products of any kind. Your coach has nothing to sell you after you enroll. That is a structural choice, not a marketing line.

Lean With Plants vs Optavia: side by side

The question that decides it: what happens in month five

Both programs can produce weight loss. The honest question is what the program leaves behind.

On a replacement-meal system, the mechanism that drives the loss is the packaged product. It controls the portion and the calories for you. That is exactly why it works quickly, and it is also why the transition phase is the hardest part of the whole experience. At some point you stop eating five Fuelings a day and start eating food again, and the decisions you were spared for months arrive all at once.

Some people navigate that beautifully. Many find it genuinely difficult, and the maintenance phase is where a lot of the regain conversation happens across every replacement-meal program, not just this one.

Lean With Plants is built backwards from that moment. The 12 weeks are spent making the thing you will be doing in month five, not a temporary version of it. You are cooking, shopping, eating out, and handling holidays inside the program, with a coach watching how you do it and adjusting. That is slower at the start and it asks more of you in week two. It is also the reason the habits survive.

We wrote about this pattern more generally in why diets fail and what sustainable eating actually looks like, and you can see how our 12 weeks are sequenced in Lean With Plants results week by week.

Who each one is best for

Optavia (Trilivy) is the better choice if you:

• Are overwhelmed and need the decisions taken away completely, at least to start
• Do not cook, do not want to learn right now, and know that about yourself
• Want a highly structured plan with almost no ambiguity about what to eat
• Respond well to a peer coach and a large, active community
• Want convenience above all else, including travel-proof grab-and-go food
• Prefer eating lean animal protein and are not interested in a plant-based approach

Lean With Plants is the better choice if you:

• Already eat plant-based or vegan and are not losing weight, which is the most common reason women find us
• Want to eat real food in normal volumes rather than packaged portions
• Have done a replacement-meal program before and watched the weight return after the transition
• Want a coach whose only job is your result, with no product attached
• Are in your forties, fifties or sixties and want something that fits the rest of your life permanently
• Want to actually enjoy dinner, and eat enough of it

"But Optavia worked for me before"

For a lot of women, it did. Fast, too.

We are not interested in arguing with your own experience. If you lost 30 pounds on Fuelings, you lost 30 pounds. The question we would ask on a strategy call is a different one: what happened when the boxes stopped coming, and what would need to be true for that not to happen again.

Usually the answer is that nothing about the way you eat normal food actually changed, because the program did not require it to. That is not a character flaw. It is what a replacement-meal system is designed to do, and it does it well.

Tracy lost 20 pounds in 12 weeks with us. She was a lifelong yo-yo dieter, and the thing she says changed was not the number. It was that she stopped seeing herself as someone between diets. Charlene lost 15 pounds in 12 weeks ahead of hip surgery and broke an all-or-nothing mindset she had carried for decades. She said she finally felt free. That kind of shift is what the habit work is for, and you can read more of it on our success page.

Frequently asked questions

Is Optavia the same thing as Trilivy now? Yes. In July 2026 Medifast announced it was rebranding OPTAVIA as the Trilivy Metabolic Health System, with the program framed in three phases: Reset, Refine and Renew. The Fuelings products and the independent coach network carried over into the new brand.

Does Lean With Plants sell shakes, bars or supplements? No. There are no products. You buy groceries at a normal store. Your coach has no financial incentive attached to anything you eat, which is worth knowing when you are comparing coaching models.

Which one loses weight faster? Very low calorie replacement-meal plans often show quick early loss, and that is a real and well-known effect. Our own number is that the average Lean With Plants client loses around 18 pounds in 12 weeks. Speed is only half the question. The other half is whether it stays off.

Do I have to be vegan to join Lean With Plants? No. Most clients are already plant-based or want to move that way, and eating 80 to 90% plants works, so plenty still eat some animal products. If you are carnivore or keto, though, this is not for you. The work is about shifting the density of what is on the plate. See do you have to be vegan to join Lean With Plants.

How much does Lean With Plants cost? We do not publish a number. Nobody running a high-touch, one-on-one coaching program does, because if people saw a number first, most would never have the conversation that shows them whether it solves their problem. It is not cheap, and it is not comparable to a box of Fuelings, because you are learning a skill for life rather than buying food. It is also not the crazy number most people imagine. We partner with Klarna and Affirm for payment plans, and the real number, the one specific to you, your situation and what you need, is talked about on your call. The full reasoning is in how much Lean With Plants costs.

What if I do not know how to cook? That is fine and it is common. A lot of clients start with three simple meals they can make on autopilot, and build from there. Simple is the point. Nobody is asking you to become a chef.

Where to go from here

If you need the decisions taken away and you want a box that tells you what to eat, Optavia is built precisely for that, and there is no shame in choosing it.

If what you want is to be able to walk into your own kitchen in two years and know exactly what to do, that is a different kind of program. Start with the LWP method if you want to understand the approach first, or go straight to the coaching program.

When you are ready, apply here and book a free strategy call. Someone from the LWP team will walk through what you have tried, what happened afterward, and whether this is the right fit for you.