10 High-Paying Weight Loss Affiliate Programs for 2025

The weight loss market is projected to reach $434.74 billion by 2028, creating massive earning potential if you know how to navigate it right. First, you must select the right affiliate program that resonates with your audience and is trusted in the industry.

This involves considering key factors such as the brand's reputation, cookie duration, commission rates and product quality. With these, you just have to employ the right strategies that will see you cut through the noise and reach the right audience.

Today, we will recommend some of the high-paying weight loss affiliate programs that we have verified. We will also guide you through the challenges and opportunities in the weight loss niche, as well as the benefits it offers. 

List of the Top 10 Weight Loss Affiliate Programs for 2025

1. Blockchain-Ads Affiliate Program - Up to 20% commission on referrals
2. American Sports & Fitness Association affiliate program - 5% commission on every sale
3. Weight Watchers - $10 commission for each qualified membership
4. Optimum Nutrition Affiliate Program - Up to 100% commission on sales
5. Trim Affiliate Program - $20 commission for every purchase
6. Lasta Weight Loss Affiliate Program - $30 commission on sales
7. iHerb Affiliate Program - Up to 10% commission on sales
8. Titan Fitness Affiliate Program - 5% commission on purchases
9. TRX Affiliate Program - 10% on US-based sales
10.  MyProtein Affiliate Program- 8% commission per sale

1. Blockchain-Ads Partner Program – 10–20% recurring commission on referrals

Blockchain-Ads is a third‑generation advertising platform built for finance, fintech, iGaming, crypto, SaaS, and other regulated industries that want compliant, performance‑driven growth. The partner program is designed for influencers, consultants, agencies, and media publishers who want to grow revenue without extra workload by managing or recommending campaigns on Blockchain-Ads.​

Why You Should Promote the Blockchain-Ads Affiliate Program

The program offers a tiered 10–20% ongoing revenue share based on partner level, along with one‑time bonuses for moving clients from competing ad platforms. Partners also get dedicated account management, sales support, free access to Blockchain Analytics, on‑chain custom audiences, reporting APIs. They also get a certified Partner badge that helps you stand out to advertisers in regulated sectors.​

• Commission: 10–20% recurring revenue share based on tier
• Cookie Duration: Not specified
• Payment Methods: Stablecoins
• Products: Full‑stack DSP/ad network, audience targeting & DMP, Nexus AI optimization, on‑chain attribution & analytics, real‑time reporting.

2. American Sports & Fitness Association affiliate program - 5% commission on every sale

The American Sports & Fitness Association is a company that specializes in crafting certification courses for professionals already in the fitness industry and individuals with deep existing knowledge. Currently, ASFA runs a fitness affiliate program that encompasses various aspects of health and wellness, including exercise, nutrition, and lifestyle

Why You Should Promote the American Sports & Fitness Association  Affiliate Program

ASFA will pay you a 5% base commission on every sale made through your referral. You will also be offered affiliate tea to support you in optimizing your performance and driving clicks. 

• Commission: 5% commission on every sale
• Cookie Duration: Not specified
• Payment Methods: Not specified
• Products: Wellness apps, online training, apparel, supplements, equipment

3. Weight Watchers - $10 commission for each qualified membership

Weight Watchers is a Netherlands-based international company that focuses on a more effective weight loss program. This organisation offers evidence-based weight management services, such as a comprehensive diet program and community support. It aims to help individuals live healthier, longer lives, reduce stigma, and improve accessibility to care. 

Why You Should Promote the Weight Watchers Affiliate Program

You join the affiliate program through Impact and wait for approval. Later, you get a banner and a link to promote the membership services. The company will then pay you $10 commission for each qualifying membership. You are free to use the available images and text links provided, but you cannot alter or modify the banners and text links.

• Commission: $10 commission for each qualified membership
• Cookie Duration: Not specified
• Payment Methods: Not specified
• Products: Weight management membership subscription

4. Optimum Nutrition Affiliate Program - Up to 100% commission on sales

Optimum Nutrition is an international health and wellness organization that has been in operation for over 30 years and is present in more than 90 countries worldwide. This organisation offers the highest quality in post-workout recovery energy and on-the-go sports nutrition products. They hold themselves to the highest standards through the strict selection of ingredients, rigorous quality control, thorough laboratory testing, and meticulous manufacturing processes.

Why You Should Promote the Optimum Nutrition Affiliate Program

As an affiliate, you can start by earning 8% commission on the sales. That is, if you register as a Yazing member. However, you are always free to negotiate the commission rates and receive up to a 100% commission on sales. Additionally, the organisation often offers coupons and deals to share with your audience and encourage them to make a purchase.

• Commission: Up to 100% commission on sales
• Cookie Duration: Not specified
• Payment Methods: PayPal, Klarna, credit cards, Google Pay, Apple Pay, Union Pay
• Products: Whey protein powder, Rebuild, PlatinumIgniterr, protein shake, Amin O.Energy, Hydrowhey and many more

5. Trim Affiliate Program -  $20 commission for every purchase

Trim is a UK-based program designed to help people lose weight. The program can help you trim at least 10% off your body weight in just six months. The platform is also known to offer refunds to its customers if the GLP-1 medicine does not yield the intended results. 

Why You Should Promote the Trim Affiliate Program

The program rewards you with a $20 commission for every purchase that is made through your link. All you have to do is join the program and get a unique referral link, then recommend Trim by sharing the link. If someone makes a purchase, you will also receive a $10 bonus added to your affiliate account. During your affiliation period, you will get an automated tracking tool that shows clear statistics in your referral dashboard. 

• Commission: $20 commission for every purchase
• Cookie Duration: Not specified
• Payment Methods: UK bank account
• Products: GLP-1 medicines

6. Lasta Weight Loss Affiliate Program - $30 commission on sales

Lasta is an online personal assistant that helps you in your health and wellness journey. This platform focuses on sustainable weight management and promoting healthy habits. It combines intermittent fasting with nutritional science to help you reach and keep an ideal weight. Its app is designed to help enhance your physical health and mental well-being through mindfulness and daily habit tracking. 

Why You Should Promote Lasta  Affiliate Program

Its affiliate program is designed to offer wellness education, habit formation, fitness guidance, and nutritional planning. If you join the program, you can earn a competitive CPA rate starting from $30 on each sale made through your affiliate link. The program boasts one of the longest cookie durations in the industry, at 120 days. Lasta also offers supportive resources, including promotional materials and expert tips, that enhance your marketing strategies. 

• Commission: $30 commission on sales
• Cookie Duration: 120 days
• Payment Methods: Credit cards, PayPal
• Products: Strudel, cream sticks, tea biscuits, tea rings, wafer

7. iHerb Affiliate Program - Up to 10% commission on sales

iHerb is a US-based online retailer founded in 1996. This company specializes in vitamins, supplements, natural health products, wellness, beauty, and grocery items. iHerb offers 5over 50,000products sourced from reputable brands worldwide 

Why You Should Promote the iHerb Affiliate Program

Given that it works with various brands in the sourcing of products, iHerb gives you a wide range of monetization opportunities. As a new partner, you can earn a 10% commission for your first three months and 5%+ thereafter, plus additional weekly and monthly bonus opportunities. Apart from the products, this platform will require that you promote its ongoing coupons, loyalty programs and shopping comparison sites. 

• Commission: Up to 10% commission on sales
• Cookie Duration: Not specified
• Payment Methods: Visa, MasterCard, American Express, Discover, PayPal, Google Pay, Klarna
• Products: Personal care essentials, beauty products, sports nutrition products, natural supplements

8. Titan Fitness Affiliate Program - 5% commission on purchases

Titan Fitness is an international company based in Bulgaria that specialises in designing and manufacturing fitness equipment, including home gym setups, professional gym machines, and functional training systems. Its products are known for competitive prices and effectiveness. 

Why You Should Promote the Titan Fitness Affiliate Program

You can sign up on the platform and promote its products. You can then receive a 5% commission on the sales that you are driving to the site. During your partnership period, you will be assigned a dedicated program manager, and receive frequent updates, promotions, and banners. You will also be offered an easy-to-use dashboard to track your performance.

• Commission: 5% commission on purchases
• Cookie Duration: 30 days
• Payment Methods: Major credit cards, PayPal
• Products: Power racks, squat stands, half racks, weight benches, dumbbells, cardio, and fitness accessories

9. TRX Affiliate Program - 10% on US-based sales

The Total Resistance Exercises (TRX) was established in 2004 by Randy Hetrick, a former US Navy SEAL. The founder developed the first Suspension Trainer in the 1990s using a jiu-jitsu belt and parachute webbing. Over time, TRX expanded from a personal training tool to a comprehensive ecosystem of fitness equipment, education, certification, and training for both consumers and commercial gyms. 

Why You Should Promote the TRX Affiliate Program

TRX is a very popular weight loss platform, making it a good potential partner. If you become an affiliate at TRX, you commission starts at 10% on US-based sales. This can become a well-paying opportunity, as the platform has an Average Order Size (AOV) of $200. You also get a dedicated affiliate support team to help you. To help represent the brand more effectively, you will receive text links, banners, and other marketing tools. 

• Commission: 10% on US-based sales
• Cookie Duration: 30 days
• Payment Methods: PayPal and cryptocurrency
• Products: dumbbell, kettlebell, dual-grip med ball, push-up stand and weight loss services

10. MyProtein Affiliate Program - 8% commission per sale

It's an award-winning weight loss company founded in 2004 with humble beginnings at a kitchen table. The company began expanding in 2016 following its integration into the THG family. Since then, this company has expanded to include MP, MyVitamins, MyVegan, and MyPRO. 

Why You Should Promote MyProtein Affiliate Program

MyProtein gives you the chance to monetise your passion and turn dedication into a source of income that rewards your efforts and influence. You will earn 8% on the sales you generate for the platform. The platform will also support your journey with banners, text links, and performance tracker tools. 

• Commission: 8% commission per sale
• Cookie Duration: 30 days
• Payment Methods: Visa, MasterCard, or American Express
• Products: Protein, ActiveWear, bars, drinks & snacks, nutrition, vitamins. vegan

What You Need to Know About Weight Loss Affiliate Programs

The weight loss programs are a partnership between affiliate marketers, such as bloggers and influencers, and companies in the health and fitness industry. Here, marketers are expected to promote weight loss products and services in exchange for a commission on sales or leads generated through the promotion link. 

Understanding Weight Loss Affiliate Programs

The weight loss affiliate markets promote meal plans, fitness programs, equipment, supplements, and digital coaching platforms designed to help people lose or manage their weight. 

Most weight loss affiliate programs offer competitive commission rates, typically as a percentage of sales or a fixed amount. Some even allow recurring earnings, where you are paid every time your referral makes a purchase or subscribes. 

The affiliated programs also offer promotional tools, such as banners, email templates, and tracking links, to effectively promote products and drive traffic. 

Benefits of Weight Loss Affiliate Programs

Below are the benefits of weight loss affiliate programs:

• Lucrative commission: Most weight loss programs offer very generous commissions. Some will pay you $20, just for successful leads and a 30% commission on purchases. 
• High-demand verticals: The weight loss marketing industry is experiencing rapid growth, but the market remains largely untapped. This enables you to educate by creating content that attracts a larger audience, increases engagement, and, consequently, drives sales. 
• High-trust and brand recognition: Most of the health and wellness brands and well-known and trusted in the market. Partnering with such brands makes your work as an affiliate easier, allowing you to advertise a product from a trusted source that already exists.
• Recurring revenue model: Most affiliate programs offer a revenue share model, where you earn a percentage of every purchase you referral makes. This allows you to earn from your efforts even after certain campaigns have ended. 
• Health-conscious audience: Currently, most of the weight-loss audience consists of health-conscious people looking for a specific solution. They are aware of the products and their effects, as well as what works and what doesn’t. This eases your work, as you now have to focus on reaching as much people as possible rather than investing in awareness and education. 

Choosing the Right Weight Loss Affiliate Program

Here are the factors to consider when choosing a weight loss affiliate program:

• Brand reputation and authenticity: Once you settle on a niche, conduct thorough research on brands and partner with those that have a strong, trustworthy history. Look at online reviews and what previous users have to say about the brand.
• Performance and payouts: Most program will reveal their product conversion rate. Choose a program with a high conversion rate. Remember that a smaller commission with a high conversion rate is preferable to a larger commission with a low conversion rate.
• Support resources: A good affiliate program will offer you effective support materials, including banners, text links, product images, and automated tracking tools. 
• Cookie duration: This determines how long after a click you can earn. Therefore, you must opt for programs with high cookie durations, so you don’t lose your referrals after a short time. 

How to Maximise Earnings Through Weight Loss Affiliate Programs

Here is how to maximise your income in the weight loss niche:

• Content and trust building: Start by niching down to a specific audience. Create high-value content from blog posts, videos, and social media content, including reviews, how-to guides, success stories, and personalized tips. Ensure you are authentic and engage you audience in every stage.
• Focus on strategic promotion: You can use multiple platforms to promote your products. Use social media platforms to share progress, engage followers, and utilize relevant hashtags. Leverage email marketing, paid ads, or collaboration with other influencers. 
• Opt for high-quality products: Select reputable brands with science-backed ingredients, well-designed landing pages, and high conversion rates. Additionally, promote a mix of products that offer solutions, such as supplements, fitness apps, meal replacements and coaching serving.
• Analyze and optimize your performance: Monitor which content and products drive the most clicks and conversions. Continuously adjust them based on the performance data.

Challenges and Opportunities in the Weight Loss Niche

Some of the most common challenges you’ll experience in your affiliation journey are intense competition, need for authenticity and trust, regulatory and compliance issues and tracking and attribution difficulties. For regulatory issues, be informed of the local laws and the advertising platform’s compliance requirements. Next, ensure that you create high-quality content that shows respect and value for the audience, and you’ll be good to go. 

On the other hand, the weight loss niche is currently in high demand, making it a lucrative industry to invest in. Due to its sensitive nature, most brands will always give as much support as possible to ensure you succeed in the market. 

Are Weight Loss Affiliate Programs Worth It?

Weight loss affiliate programs are definitely worth it. They offer a wide range of income sources, enabling marketers to earn money by promoting various products and services. The commission rates and also very favourable, and some even pay on successful leads, making it a very lucrative niche for affiliate marketers.