Finished the 21-Day Vegan Kickstart? Here Is What to Do Next

The free PCRM Kickstart is a great on-ramp. Here is how to keep going after day 21, and when coaching is worth it.

By Chelsea Mae · September 28, 2026 · 10 min read

If you have just finished the 21-Day Vegan Kickstart, the next step depends on which problem you have left: an information problem or an implementation problem. The Kickstart, a free program from the Physicians Committee for Responsible Medicine (PCRM), is one of the best on-ramps to plant-based eating that exists, and we recommend it to beginners without hesitation. What it does not do, and does not claim to do, is stay with you after day 21. Lean With Plants is a 12-week one-on-one plant-based weight loss coaching program for women founded by Chelsea Mae Cullen, built for the women who know what to eat and are still not losing weight; we have coached over 3,000 women and the average client loses around 18 pounds in 12 weeks. This article lays out the free options, PCRM's own paid class, and when one-on-one coaching is the right call.

Everything we say about PCRM's programs below comes from their public website. Competitor details were last checked against their public website in September 2026 and may change.

What is the 21-Day Vegan Kickstart?

The 21-Day Vegan Kickstart is a free program from the Physicians Committee for Responsible Medicine. According to their website at the time of writing, it comes as an app and a website, with meal plans, recipes, grocery lists and daily videos, available in English and Spanish. It launched in 2010 and has been used by hundreds of thousands of people.

It is a vegan starter program, not a weight loss program, and it is important to say that plainly. Its job is to get you eating plant-based for three weeks with as little friction as possible: here is what to buy, here is what to cook, here is a short video to keep you going today. It does that job very well, and it costs nothing.

Why do so many people stall after day 21?

Because the Kickstart solves the starting problem, and starting is not the hard part.

By day 21 most people have learned that plant-based food can taste good, that beans and rice are cheap, and that they feel better. Then the meal plan ends. Life comes back: the work trip, the birthday, the week when nobody cooked. Without the daily prompt, the new way of eating has to compete with 30 or 40 years of the old way of eating, and habit usually wins.

There is a second issue specific to weight. A lot of people move to plant-based eating and do not lose weight, or lose a little and then stop. Plant-based is not automatically low in calorie density. Nuts, nut butters, avocado, oil, tahini dressings, dried fruit and plant-based convenience foods are all vegan and all dense. We wrote about the pattern in why vegans gain weight and healthy vegan food and oil keeping you stuck.

So the question after day 21 is not "was the Kickstart good". It was. The question is what you are missing now.

Is your problem information or implementation?

This is the fork in the road, and being clear about it will save you time and money.

You have an information problem if you finished the Kickstart and are thinking: I do not know what to eat now that the meal plan is gone. I do not know how to eat this way at a restaurant. I do not understand why the scale has not moved. That is fixable with more education, much of it free.

You have an implementation problem if you are thinking: I know exactly what I should be doing and I keep not doing it. You have done the Kickstart, maybe twice. You have read the books. You know the food. And you are still stuck. More information will not fix that, because information is not what is missing. We laid out the argument in Lean With Plants vs free advice online.

Most women who come to us have the second problem. Sam lost close to 70 pounds with us and says she already knew the information; she could not implement it until somebody was expecting her every day. Beth had tried more than 40 diets before us, which means she had already met a great deal of correct information.

What are the free next steps?

If your problem is information, or you simply want to keep going on your own, start here.

1. Go back to PCRM. Keep the Kickstart recipes and grocery lists in rotation, and look at what else PCRM offers on their site. Staying with the source that got you started is a reasonable move.
2. Learn calorie density. This is the one idea that turns plant-based eating into plant-based weight loss. Oil is roughly 4,000 calories per pound; non-starchy vegetables are roughly 100. Your stomach measures volume and weight, not calories, so a plate built from low-density food fills you up on fewer of them. Read calorie density explained.
3. Our blog. We publish everything we teach about food, including a vegan weight loss plan for beginners and whole food plant-based weight loss.
4. The free live training. It covers the method we use with clients. It is free and it is a good way to decide whether coaching is even relevant to you.
5. Pick two habits and keep them. Not ten. Two. A big bowl of fruit or vegetables at the start of your main meals, and a two-minute check-in with yourself every evening. That is the seed of what we call the STACK Method.

What is PCRM's 12-Week Plant-Based Weight Loss Program?

If you want more structure than free resources but prefer a physician-led group, PCRM runs a paid program that is a natural next step after the Kickstart.

PCRM has run a 12-Week Plant-Based Weight Loss Program with weekly online classes led by physicians and a dietitian, a one-on-one dietitian consult and body composition scans, following a low-fat vegan approach. At the time of writing the program page sits behind a PCRM member login, so check with PCRM for current dates, price and availability.

This is a good option for a lot of people. It is led by clinicians, it is a group so you are not alone, and it is run by a nonprofit. If you want a physician's voice in the room, a dietitian consult and objective body composition data, and you are comfortable doing the daily work yourself between classes, it is a sensible choice, and we would say so.

When does one-on-one coaching make sense?

Coaching makes sense when the gap is daily follow-through, not weekly information.

At Lean With Plants, a dedicated coach messages you daily in the LWP app. You photograph your food and she coaches you on the actual plate in front of you until you can build a weight-loss-optimized plate anywhere, without counting, weighing or measuring anything. She is a real person, not a bot and not a group chat with 200 women. Around the food, you build three or four tiny daily habits (about two minutes each) through the STACK Method, and you start moving from Rep Zero, building the habit of showing up before building strength to protect muscle and bone. There is a weekly community group coaching call and a Q&A every two weeks with Chelsea or Ami-James Deane, our Head of Coaching. See how it works.

It is for women only, mostly in their forties, fifties and sixties. Many clients have diabetes, prediabetes, hypothyroidism or PCOS, are in perimenopause or menopause, or are coming off GLP-1s, and the coach works around medication. You do not have to be fully vegan; 80 to 90% plant-based works. We do not work with women who have had a gastric bypass or gastric sleeve, and it is not for carnivore or keto eaters.

Rena, 62, lost 24 pounds in 12 weeks post-menopause and went from binge eating to binge-free, after saying she could never quit sugar. Tracy lost 20 pounds in 12 weeks after a lifetime of yo-yo dieting. Charlene lost 15 pounds in 12 weeks ahead of hip surgery and broke an all-or-nothing mindset. Those results came from daily coaching, not from another meal plan. More on the success stories page.

How do the three options compare?

Which should you choose?

• Brand new to plant-based eating? Do the Kickstart. It is free, it is good, and there is no reason to pay anyone before you have done it.
• Finished it and want to understand the why, with a physician in the room? PCRM's 12-week program is a sensible next step, and you can check their site for current details.
• Finished it, know the food, and still stuck? If you are a woman over 40, that is who Lean With Plants is built for. See who is Lean With Plants for.
• A man, or someone who wants group-only support? PCRM's options fit better than we do, and we would tell you so on the call.

Frequently asked questions

Is the 21-Day Vegan Kickstart a weight loss program? No. According to PCRM's site it is a vegan starter program: meal plans, recipes, grocery lists and daily videos to help you eat plant-based for three weeks. Weight loss is not its stated purpose.

Can I repeat the Kickstart? It is free, so nothing stops you. If you have already done it more than once and the result keeps fading, though, the missing piece is probably not another 21 days of meal plans.

How much is PCRM's 12-Week Plant-Based Weight Loss Program? It is a paid program. At the time of writing its page sits behind a PCRM member login, so check with PCRM directly for the current price and dates.

How much does Lean With Plants cost? We do not publish a price. It is discussed on a free 45-minute Zoom call with someone from the LWP team, because a number without context tells you nothing about whether it solves your problem. It is not cheap and not comparable to an app or a class, but it is not the number most women imagine. We partner with Klarna and Affirm for payment plans. See how much does Lean With Plants cost.

Do I have to be fully vegan for Lean With Plants? No. Lean With Plants is a vegan company, but 80 to 90% plant-based works, and families who are not plant-based are normal.

I did the Kickstart and did not lose weight. Why? Usually calorie density. Plant-based food can be very dense (oil, nuts, nut butters, avocado, dressings, dried fruit, convenience foods), and none of it is bad for you, it is just dense. Learning to see that on the plate is a skill the Kickstart is not designed to teach, and it is the first thing an LWP coach works on.

Ready for the next step?

Finish the Kickstart, and if it worked and you are on your way, keep going. If you are a woman over 40 who knows the food and cannot make it stick, apply and book a free strategy call. It is a 45-minute Zoom call with someone from the LWP team about where you are, what caused the weight gain, your real goal, and how to bridge the gap. If we do not think Lean With Plants is the right fit, we will say so, and we may well point you back to PCRM.