Top 20 Best Weight Loss Affiliate Programs That You Should Know in 2025

The World Health Organization (WHO) records that about 1.9 billion people are overweight or obese worldwide. That number has led to a high demand for weight loss solutions, which makes it a potential market for the affiliates.

There are many types of products in this industry, how can you choose the one which is most suitable for your audience?

We have collected the top weight loss affiliate programs for you in this article. Carefully review all the perks and requirements of each program before you join one.

Quick Comparison

Program Name	Commission (%)	Cookie Duration (Days)	Niche Suitable	Affiliate’s Rating*
Maximum Slim	30%	30 days	Weight loss supplements, dietary greens	⭐⭐⭐⭐☆
Mayo Clinic Diet	50%	45 days	Medically-backed diet programs	⭐⭐⭐⭐⭐
Options Medical Weight Loss Clinic	~$50 per order	30 days	Medical weight loss clinics	⭐⭐⭐⭐☆
Weight Watchers (WW)	~$10 per sale	30 days	Global weight loss program	⭐⭐⭐⭐☆
Diet Direct	Up to 10%	30 days	High-protein diet, medical nutrition	⭐⭐⭐⭐☆
Diet-to-Go	$50	45 days	Prepared diet meals, meal delivery	⭐⭐⭐⭐⭐
Noom	$10	30 days	Psychology-based diet program	⭐⭐⭐⭐☆
ACE Fitness	5%	90 days	Fitness certification, coaching	⭐⭐⭐⭐☆
Dr. Colbert’s Keto Zone	Up to 12%	60 days	Keto, low-carb supplements	⭐⭐⭐⭐☆
Designer Wellness	10–15%	90 days	Protein powders, wellness nutrition	⭐⭐⭐⭐⭐

20 Best Weight Loss Affiliate Programs

1. Maximum Slim

Maximum Slim supplies high-quality dietary supplements and weight loss products. Their product can give you the veggies you need all day in the easiest and most effective way.

With this weight loss supplements affiliate program, you can earn a 30% commission for each successful sale. The cookie duration lasts 30 days, so your commission is approved if customers click on your link and place an order within 1 month.

You can make your promotion more eye-catching and attractive with the brand’s provided creatives like banners and text links.

You can also stay informed with program update newsletters. Moreover, you can leverage coupons and season deals to encourage more purchases.

2. Mayo Clinic Diet

Led by Mayo Clinic experts, Mayo Clinic Diet weight loss programs help patients lose weight in 2 weeks using medically backed habits. Their diet emphasizes consuming a variety of nutrient-rich foods, including fruits, vegetables, whole grains, lean proteins, and healthy fats.

You can join Mayo Clinic Diet’s affiliate program through the CJ network and earn a 50% commission for each new customer. The cookie duration is 45 days from the client’s first click on your link.

The program offers a tracking dashboard for affiliates to monitor their promotion results and check their commissions.

One important thing to know is that this program is only available to affiliates in the United States.

3. Options Medical Weight Loss Clinic

Options Medical Weight Loss Clinic is a well-known weight loss center led by 40 years of experience in weight and healthcare doctors. They offer customized programs with scientific solutions to help patients achieve their long-term weight loss goals.

Managed through Impact, the Options Medical Weight Loss Clinic affiliate program allows partners to earn $50 for each order. The cookie lasts for 30 days, so you can get commissions if customers click on your affiliate link and order within 1 month.

You can utilize appealing banners and text links to create attractive promotional posts. One thing to note, just like the Mayo Clinic Diet, this program is only available for affiliates in the United States.

4. Weight Watchers

With 60 years of experience and 4 million members worldwide, Weight Watchers (WW) is recognized as the top leading doctor-recommended weight loss program. WW’s programs help clients lose weight and create healthy habits without cutting back on their favorite food.

Being WW’s affiliates, you can get $10 for each successful sale. The referral period starts when a customer clicks on your affiliate link. You’ll receive a commission if they purchase within 30 days.

WW offers affiliates a diversity of choice with banners, buttons, and text links. You can download your favorite ones to make your promotion more eye-catching.

5. Diet Direct

DietDirect specializes in providing high-protein nutritional products and supplements for hospitals, weight loss clinics, and physicians. Their scientifically proven products are a fast, convenient and effective way to maintain clients’ diet meals.

The DietDirect affiliate program offers various commissions based on the type of affiliates.

• Publishers with websites related to the diet/fitness industry:
• 10% for all New Customer sales
• 5% on all Returning Customer sales
• Coupon/Loyalty/Cash Back Publishers with websites related to the diet/fitness industry:
• • 2% for all New Customer sales
  • 1% on all Returning Customer sales

The referral period lasts 30 days, so you can earn commissions if customers buy products within this time frame.

The Diet Direct products have a high conversion rate, making it an ideal chance for affiliates to generate referrals. They offer many choices of web banners and text links to support your promotion.

6. Diet-to-go

Diet-to-go offers pre-prepared meal plans tailored to each customer’s needs, such as losing weight, supporting their health, and maintaining diet meals. Customers can have fresh, tasty, and nutritionally balanced meals delivered right to their door.

Managed through CJ, the Diet-to-go affiliate program allows publishers to earn $50 in commissions. You can also get bonuses from the brand based on your performance. With the 45-day cookie duration, you will get commissions for each order placed within that time frame after customers click on the affiliate link.

Their tracking dashboard makes it easy for you to manage your referrals, sales, and commissions. You can also get promotional tips and support from their full-time program manager.

7. Noom

Noom provides a scientifically proven weight loss program. They help clients get in shape and maintain a long-term diet by building healthy habits and changing their mindsets about food and exercise.

The Noom affiliate program gives affiliates $10 for each order. The referral window is 30 days, meaning you’ll earn commissions if customers buy via your link within a month.

The Noom affiliate program is managed through the Impact network. You can access your personal dashboard on the platform to monitor performance metrics.

8. Ace Fitness

Ace Fitness takes the lead in creating certified programs and educational resources in health and fitness. Ace Fitness programs are designed for people who aim to be personal trainers, group instructors, or health coaches.

Managed through Impact, the Ace Fitness affiliate program lets affiliates earn a 5% commission on referral sales. With 90 days of cookie duration, you can get commissions if customers place an order in the next 3 months after their first click.

9. Dr. Colbert’s Keto Zone

The Keto Zone system was developed by Dr.Colbert, a well-known anti-aging medical doctor and author. He follows the ketosis diet program, a safe and natural physiological way to lose weight and improve metabolic health.

By joining The Keto Zone’s affiliate program, you can get up to a 12% commission rate for your referral sales. The cookie duration is 60 days, so you can earn commissions if customers place an order within 2 months of clicking on your link.

With a variety of text links, coupon banners, and images, you can choose the best fit for your website. Moreover, their dedicated manager is always willing to assist if you have any concerns.

10. Designer Wellness

Designer Wellness provides a variety of high-quality protein powders in diverse and delicious flavors. Their products effectively support fitness, maintain weight, and improve performance.

The Designer Wellness affiliate program lets you earn a competitive commission rate, starting at 10% and increasing up to 15% based on your performance. You can earn commissions if your customer clicks on your link and purchases items within 90 days of the cookie window.

The brand’s affiliate manager is available to help with any promotion-related issues. You can keep the audience updated with the brand’s promotions and boost more purchases from these discounts.

11. Healthy Wage

• Commission Rate: $50/Healthy Wager or $30/Team Challenge
• Cookie duration: 30 days

Healthy Wage creates weight loss challenges with cash prizes up to $10,000. Users can make a bet on their weight goal, and they will be the winner if their weight loss process is successful. They can attend the challenge as individuals or as a team.

12. Transparent Labs

• Commission Rate: 30%
• Cookie duration:  60 days

Transparent Labs is one of the best natural supplements for fitness providers, using 100% authentic and high-quality ingredients. Their products are suitable for people who want to lose body fat, build muscles, and support their health.

13. Cinderella Solution

• Commission Rate: 95%
• Cookie duration: Not mentioned

The Cinderella Solution is a weight loss program for women, particularly those over 25. The program consists of four distinct phases, each tailored to help participants achieve their weight loss goals effectively.

14. The Smoothie Diet

• Commission Rate: 75%
• Cookie duration: Not mentioned

The Smoothie Diet is a 21-day weight loss program that involves replacing some of your meals with nutrient-rich smoothies. They create various smoothie recipes with fruits, vegetables, protein powders, and healthy fats.

15. Cronometer

• Commission Rate: $0.10 per lead
• Cookie duration: Not mentioned

The Cronometer app allows users to track nutrients, analyze meals, and manage their diet programs. People can also count calories in their food and adjust the weight loss process.

16. Fraser Wilson

• Commission Rate: $15
• Cookie duration: 30 days

This is an online weight loss program designed by gym coach Fraser Wilson. The Fraser Wilson program helps users get in shape and build muscles with workout plans and nutritious meals.

17. Itsmylife

• Commission Rate: 5%-15%
• Cookie duration: 30 days

Itsmylife provides protein diet meals to help people lose weight using the Yo-yo effect. Their products are known for their easy preparation, delicious taste, and high nutritional value.

18. NutriSystem

• Commission Rate: 2.4% – 5.6%
• Cookie duration: 20 days

NutriSystem offers pre-packaged meals to help consumers control the portion size of their diet food and create healthy eating habits. The program’s eating plans allow people to manage their hunger with six small meals per day, including three main meals and snacks.

19. The Healthy Mummy UK

• Commission Rate: 10%
• Cookie duration: 30 days

The Healthy Mummy UK program is designed for busy mothers to help them lose weight in their postnatal period. There are numerous easy-to-follow exercise programs and healthy diet recipes to improve overall health.

20. Fitaid Energy

• Commission Rate: 8%
• Cookie duration: Not mentioned

Fitaid Energy supplies fitness-focused energy drinks based on customers’ health-conscious minds. These drinks contain many types of vitamins and nutrients, which can replace high-sugar and caffeine beverages to boost people’s energy.

How to Choose the Right Weight Loss Affiliate Program: 8 Critical Selection Criteria

You now have a list of potential partners, but picking a winner isn’t as simple as choosing the one with the highest commission rate.

In fact, that is the most common rookie mistake.

A program offering $100 per sale might actually earn you less than one offering $40, depending on how well their page converts and how trustworthy they are.

To build a sustainable income, you need to evaluate partners with data, not emotion. Let’s check the guide below to find out the right one for you.

1. Commission Structure and Long-Term Revenue Potential

Don’t just look at the headline number. You need to calculate the Estimated Lifetime Value (LTV) of a referral.

In the weight loss niche, you will typically see two models:

High One-Time CPA: You receive a single lump-sum payment (e.g., $100) per sale.

Recurring Revenue: You get a smaller percentage (e.g., 20%) for as long as the customer stays subscribed to a supplement or app.

If a subscription program pays 20% on a $50/month product, that’s $10/month.

If the average user stays for 12 months, your total commission is $120, beating the $100 one-time payout.

Therefore, you need to look for CPA offers above $75 or recurring commissions of 20%+ with customer retention over 6 months.

If you need cash flow now to pay for ads, choose CPA. If you want to build passive income that grows over time, focus on recurring models.

2. Conversion Rate and EPC (Earnings Per Click)

A high commission is useless if nobody buys.

This is where EPC (Earnings Per Click) becomes your most important metric. EPC tells you the average value of every visitor you send, regardless of whether they buy.

Before joining any program, you should check affiliate networks like ClickBank (look for “Gravity” scores over 150) or ask the affiliate manager directly for their “network-wide EPC.”

In the weight loss vertical, a healthy EPC is between $0.50 and $3.00. Anything above $5.00 is exceptional.

👉Tip: Always track your first 500 clicks separately. If your personal EPC is much lower than the network average, the issue might be your traffic source, not the offer.

3. Brand Reputation and Product Credibility

In the health space, trust is your currency.

If you promote a “miracle pill” that turns out to be a scam, you may lose your audience forever.

Here is the 5-minute credibility check you can consider:

🔍 The “Scam” Search: Google [Brand Name] + complaints and [Brand Name] + scam. If the first page is full of BBB complaints or “billing fraud” forum posts, run.

🔍Ingredient Check: Do they cite peer-reviewed studies for their ingredients, or just vague “clinical results”?

🔍 FTC Radar: Check the FTC complaint database. If the company has a history of misleading marketing, they are a ticking time bomb.

If a product has a Trustpilot rating under 4.0/5 or hidden contact information, do not promote it. No commission is worth your reputation.

4. Promotional Restrictions and Creative Freedom

Always read the “Terms and Conditions” PDF before signing up. Some programs have strict rules that can hurt your marketing strategy.

Let’s see some common “red-flag” campaigns that can kill your campaign before it starts:

PPC Bidding: Many programs ban bidding on their brand name (e.g., “WeightWatchers discount”). If your strategy relies on Google Ads, this is a dealbreaker.

Social Media Bans: Some medical weight loss programs strictly ban promotion on Facebook or Instagram due to policy risks.

“Pre-Approval” Clauses: If the program requires you to submit every email draft or blog post for approval before you publish, your speed will suffer.

If you are a YouTuber, ensure video reviews are clearly allowed. If you are a blogger, check if you can use “review” or “scam” in your article titles (a common SEO tactic).

5. Cookie Duration and Attribution Windows

The “cookie” is the digital tag that credits the sale to you. Cookie duration determines your claim period.

Weight loss is often an emotional buy, but it can also be a researched one. A customer might click your link on Monday, read reviews on Tuesday, and finally buy on Friday.

• 30 Days (Standard): If they buy within a month, you get paid.
• 24 Hours (Amazon): If they don’t buy immediately, you likely lose the commission.

Imagine you send 1,000 clicks. 5% buy immediately. Another 3% buy two weeks later.

• With a 60-day cookie, you get paid for all 8%.
• With a 24-hour cookie, you lose nearly 40% of your revenue.

Negotiation Tip: If you are an established affiliate sending a lot of traffic, ask for a “VIP tier.” Managers can often extend your specific cookie duration from 30 days to 90 days or even “Lifetime.”

6. Payment Reliability and Terms

Cash flow kills more affiliate businesses than bad marketing. You need to know when and how you get paid.

For example, “Net-30” means you get paid 30 days after the end of the month. Meanwhile, “Net-60” means waiting two full months.

❌ Avoid Net-60 programs if you are running paid ads; you can’t cover that cost for two months.

What’s more, some programs won’t pay you until you earn $500. For a beginner, that might take months. The ideal thresholds should stay around $50-$100.

To stay safe, you can check affiliate forums like AffiliateFix. If you see recent threads titled “Has anyone been paid by [Program X] this month?”, avoid them.

7. Affiliate Support and Resources Quality

The best affiliate programs treat you like a partner, not a number. The quality of support directly affects how fast you can launch.

Before joining a program, you look at their resource library. Do they provide:

• High-quality product images?
• Pre-written email swipes that actually sound human?
• Banners in standard ad sizes?
• Customer data on who actually buys their product?

Or you can send a simple email to their affiliate support asking specific questions (e.g., “What is your top-converting landing page for women over 40?”).

8. Product Quality (The “Mother Test”)

This is your final and most important filter. All the metrics above – EPC, CPA, LTV -mean nothing if the product is garbage.

You need to move beyond the spreadsheet and test the reality. Here is how to vet quality like a pro:

First, you become the customer 🛒

If the price point is reasonable (under $100), buy it. Go through the checkout, taste the product, and use the app. If the user experience is clunky, you will lose conversions.

Next, you check the satisfaction levels 📉

Ask the affiliate manager for the refund rate. A rate under 10% is healthy, but anything over 20% is a major warning sign that customers feel cheated.

Then, you test the customer support 🤝

Email customer support as a “confused buyer.” If they are rude or unhelpful to you, they will be rude to your audience, and you will get the blame.

What Content Works Best for Weight Loss Affiliate Marketing?

In affiliate marketing, not all content is created equal.

You can write 50 general articles about “healthy eating” and make zero sales, or write 5 strategic comparison posts and generate a full-time income.

The difference isn’t in the quality of your writing; it’s in the user’s intent.

To maximize your earnings, you need to match your content to where readers are in their buying journey.

Here are the five highest-performing content types, ranked by their ability to turn readers into buyers.

Comparison Content: Capturing High-Intent Buyers

Conversion Rate Benchmark: 5–8%

This is your highest-value asset. When a reader searches for “Noom vs. WeightWatchers,” they aren’t looking for entertainment.

They have their credit card in hand and are trying to decide which specific solution to buy. Your job is simply to help them choose.

You can focus on these three essential formats to create comparison content.

🥊 Head-to-Head (X vs. Y): A detailed breakdown of two competitors. (e.g., “Noom vs. WW: Which Is Better for Sustainable Results?”)

🏅 The “Best Of” Roundup: A curated list for a general need. (e.g., “15 Best Weight Loss Apps for 2025”)

🎯 Demographic Specifics: Targeting a niche audience. (e.g., “Best Weight Loss Programs for Women Over 50”)

Individual Program Reviews: The Authority Builder

Conversion Rate Benchmark: 3–5%

Deep-dive reviews target “Branded Search” traffic—people typing [Program Name] review into Google.

These visitors are highly qualified but skeptical. They want proof that the program isn’t a scam.

Here are some key notes when you write your reviews.

The “Receipts”: Show proof you actually used it. Include screenshots of the app, photos of the meals you cooked, or a snapshot of your billing receipt.

The Good AND The Bad: A review with zero negatives looks fake. Admit that the calorie logging is tedious or the customer service is slow. This honesty makes your eventual recommendation 10x more powerful.

The “Who It’s For”: Explicitly state who shouldn’t buy it. (e.g., “If you hate tracking macros, do not buy this.”)

Results Timeline: Manage expectations by breaking down what happens in Week 1 vs. Month 3.

Transformation Story Content: The Emotional Hook

Conversion Rate Benchmark: 2–4%

Facts tell, but stories sell.

Transformation content works because it validates the reader’s struggle. It stops being about “a product” and starts being about “a result.”

However, readers can spot a fake or exaggerated story from a mile away. You can follow some tips below to write better stories.

📉 Avoid Linear Perfection

Real weight loss is messy. Nobody loses weight in a straight line. Share the week you plateaued or the weekend you binged on pizza 🍕. This vulnerability proves you are human, which builds immense trust.

✨ Go Beyond the Scale

Don’t just list pounds lost. Focus on “Non-Scale Victories” (NSVs)—like finally buttoning those old jeans 👖, having the energy to play with your kids, or sleeping through the night. These emotional wins hit harder than numbers.

🛠️ The “How” (Tactical Detail)

Emotion draws them in, but logic gets the click. You must explicitly mention the tools that helped you succeed. (e.g., “I finally broke my plateau when I started using [Affiliate Product] to track my protein intake.”)

Educational How-To Guides: The Volume Play

Conversion Rate Benchmark: 1–3%

Educational content targets high-volume searches like “how to break a weight loss plateau” or “why am I not losing weight.” These readers have a problem but don’t know the solution yet.

Your goal is to deliver high-value education that naturally introduces a product as the solution.

First, you identify the Pain: “You’ve been eating 1,200 calories a day, but the scale won’t budge.”

Then, explain the science: Briefly explain metabolic adaptation or cortisol levels.

Finally, you offer the tool: “One way to fix this is by cycling your carbs. It’s complicated to do manually, which is why I use the [ App Name] meal planner to do the math for me.”

Seasonal New Year Content: The “Gold Rush”

Traffic Benchmark: ~40% of annual volume occurs in Jan/Feb

In the weight loss niche, January is Black Friday. Conversion rates skyrocket because motivation is at its peak.

If you aren’t prepared for Q1, you are leaving half your annual revenue on the table.

You can use the Q4 prep checklist below to prepare seasonal content.

Publish Early: Get your “Best Weight Loss Programs for [Next Year]” guide live by November or December so it has time to rank in Google.

Update Your URLs: Add the current year to your titles and headers to signal freshness (e.g., “New for 2025”).

Leverage Urgency: Use language that speaks to the “fresh start” mentality. (e.g., “30-Day January Challenge” or “Start the Year Strong”).

🚫 Warning: Traffic will drop by 60-70% in February. This is normal. Use the January surge to capture email leads so you can continue selling to them when the “New Year hype” wears off.

How Do You Build Trust When Promoting Weight Loss Products?

In the weight loss industry, trust is scarce.

Your audience has likely been burned by “miracle pills,” restrictive fad diets, and false promises before they ever landed on your page.

If they smell even a hint of dishonesty, they will click away.

In the next part, we’ll share some insights to help you build trust when promoting weight loss brands.

Personal Experience Demonstration

In an industry full of fake reviews and stock photos, authenticity is your superpower. Nothing kills skepticism faster than undeniable proof.

If you claim a program works, you need to show your work, not just tell it.

Readers are savvy – they want evidence that you have actually been in the trenches.

For example, you can show evidence like that:

Dashboard Screenshots: Show the logged-in user dashboard. Show the meal plan you were assigned.

Dated Progress Photos: A generic “After” photo is suspicious. A photo with a timestamp or a current newspaper (old school, but effective) is undeniable.

Specific Struggle Details: Don’t just say “it was easy.” Say, “Week 3 was brutal because the carb cravings kicked in, but the community support feature helped me push through.”

But what if you can’t use the product?

If you haven’t personally used a program (e.g., a female-only plan if you’re a male writer), admit it immediately.

“I haven’t personally tried X, but I interviewed 10 women who have…” is infinitely more trustworthy than faking it.

Scientific Citation Strategy

Opinions are cheap; research is valuable. When you make a claim about a product’s effectiveness, back it up with high-quality sources.

You’d better use primary sources. It’s best to link to the actual study on PubMed or JAMA, not a blog post that summarizes it.

Additionally, you should explain the science behind it, not just drop links. “A 2023 study in JAMA found that participants using GLP-1 medications lost an average of 15% body weight over 68 weeks.”

If a study shows mixed results, say so. Citing a study that says “results vary” builds more authority than finding one obscure paper that promises miracles.

Balanced Review Approach

A 5-star review with zero negatives screams “fake.” Real products have flaws. Real reviews acknowledge them.

You need to embrace imperfection to build real credibility.

✅ The Good: Start with the legitimate pros and unique features that make the product worth buying.

⚠️ The Bad (The Meat): This is crucial. Be specific about the downsides. Say things like, “The app interface is clunky,” or “The protein powder tastes chalky if you don’t mix it with milk.”

🏁 The Verdict: Close with a nuanced recommendation based on the balance of the pros and cons.

Authentic Transformation Showcasing

Before-and-after photos are the currency of the weight loss world, but they are also the most abused.

As consumers are so used to seeing Photoshopped results, a standalone image is no longer enough.

You can add some important information to make your posts standout.

Timeline: State exactly how long it took. “Lost 20 lbs” is suspicious. “Lost 20 lbs over 4 months” is realistic.

The “Messy Middle”: Show a graph of weight loss that isn’t a straight line. Show the week you gained 2 pounds back. Real weight loss is non-linear.

Maintenance: Share an update 6 months later. Did you keep it off? Promoting sustainability is rare and highly respected.

Transparent Disclosure

Many affiliates make the mistake of burying their financial relationship in a tiny, grey footer link, hoping no one notices. Do the opposite.

Hiding your intent creates suspicion. To disarm your readers immediately, you should place your disclosure front and center.

“Full Transparency: I earn a commission if you purchase through my links, at no extra cost to you. I only recommend programs I have personally vetted. This commission supports the free content on this site.”

Why does this boldness work?

• Treats the reader like an adult.
• Explains why you are writing this content (it’s your job).
• Frames the commission as a “thank you” for your hard work, which many readers are happy to provide.

Third-Party Social Proof

However, even with full transparency, you are still a single voice. Your word is good, but the crowd’s word is better.

To convince a skeptical buyer, you shouldn’t ask them to take just your word for it. You need to back up your claims with data from the broader market.

Embed Trustpilot/BBB Ratings

Even if they aren’t perfect. A 4.2-star rating with hundreds of reviews is more trustworthy than a perfect 5.0 with three reviews.

Curate User Quotes

You seek detailed testimonials from forums or social media (with names/locations if public) that highlight specific benefits.

Address Negative Reviews

You find a common Reddit complaint and explain it. “Some users on Reddit complained about the shipping time, and in my experience, it did take 10 days to arrive.”

Conclusion

You now have the framework, it’s the right time to create a weight loss affiliate program.

But remember, this is more than just a marketing channel. A great affiliate program is a true partnership. It is built on trust, open communication, and the shared goal of helping people on their health journey.

Your journey will be easier with UpPromote since we’ve covered all the complex tasks. Let’s find out about our pricing plans to choose the best one.