Key Benefits

• Discover the science and origins of C15:0 in a clear, engaging way.

• Complex research made simple—understand C15:0’s role in your diet.

• Practical tips to help you add C15:0 to your everyday meals.

Start your journey with The Longevity Nutrient, where Dr. Stephanie Venn-Watson shares the fascinating discovery of C15:0—a unique fatty acid found through research on healthy ageing dolphins. This book brings the science of C15:0 to life, making it easy to see how this essential fat could fit into your lifestyle. With a blend of storytelling and research, Dr. Venn-Watson challenges old nutrition myths and highlights why C15:0 deserves a place at your table.

Whether you’re curious about the latest in nutrition or looking for new ways to support your wellbeing, The Longevity Nutrient offers practical guidance for adding C15:0 to your diet, all backed by science and real-world insights.

Fatty15's journey began with a discovery inspired by the resilience of dolphins, now the subject of a compelling TEDx talk. Co-founders Stephanie Venn-Watson, DVM, MPH, and Eric Venn-Watson, MD, MBA, brought together their expertise in veterinary epidemiology, public health, and military medicine to explore the health of these marine mammals. Their research uncovered a striking difference between two dolphin populations: those fed with fish rich in fatty acid C15:0 (FA15™) exhibited fewer aging-related conditions. This revelation lead to further investigation, leading to a groundbreaking study where dolphins supplemented with FA15™ experienced a remarkable 72% improvement in cellular stability. This sparked a broader mission: to use FA15™ to promote healthier aging in humans too.

Driven by this shared vision, Fatty15 was founded, representing a convergence of science, innovation, and compassion.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

Shipping

At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.

UK standard delivery

Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.

Next working day

For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.

International

International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.

Returns

If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.

For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.