How One Woman Used an Easy AI Tool for Weight Loss—and Shed 100 Pounds!

When Cody Grammer’s doctor told her, “I’m very scared for you,” she knew her life had to change. Her blood pressure had skyrocketed to a dangerous 195/130 mmHg. But instead of expensive trainers or complicated diet plans, Cody turned to something surprising: artificial intelligence (AI) for guidance. The result? She lost 100 pounds and brought her blood pressure down to a healthy 120/80—all using easy AI tools on her phone. “I’m over the moon about it!” she says. And the best part? You can tap into this same life-changing technology today. Here’s how to get started using AI for weight loss.

How AI helps you lose weight faster

“My patients use AI platforms all the time, in so many ways,” says obesity medicine expert Kia Mitchell, MD, who frequently sees women lose 80 or 100 pounds at Families First Medical Group. The upside is “absolutely huge!”

Here’s what the research says: Receiving individualized AI-guided weight-loss advice outperforms general advice from a doctor, helping people shed 70 percent more weight over six months, according to a 2025 study. And it can work quickly: Using AI tools helped people lose 48 percent more weight in three weeks, according to MIT research. Emory Healthcare’s J. David Prologo, MD, a radiologist and obesity expert who has been on the cutting edge of medical technology for years, is a fan. “What used to take one month of research now takes 10 seconds.” Ready to try AI for your own weight-loss goals? Here’s how to get started.

Free AI tools for weight loss, meal planning and exercise guidance

For starters, you can ask AI questions. Anyone can use a computer or smartphone to ask a tool like ChatGPT for quick weight-loss guidance to:

• Goof-proof healthy eating: Meal planning takes time, so many people skip it during their weight-loss journey. Instead, let AI handle it. Dr. Mitchell says the more specific you can be about your goals, the better. Try a prompt like: “I want to lose [this much weight] in [this much time] while building muscle. What 10 foods do I need to eat most?” Or ask: “Tell me a healthy meal I can make using these six ingredients in my kitchen.” Or ask: “Give me a Costco grocery list under $120 that prioritizes fiber [40 grams a day] and protein [100 grams a day].”

• Build a fitness plan: Want to get more movement? Ask AI for step-by-step instructions, like how to train for a couch-to-5K race. Dr. Mitchell notes, “It gives people actionable items they can use on a daily basis,” like how far to walk each day and when to add in run-walk intervals to build up stamina.

Track your weight loss with AI wearables

For even better insights and results, let AI read your patterns and encourage you during your weight loss. Dr. Prologo recommends using a wearable AI-powered sensor that gives real-time biofeedback. (Think: Fitbits, Apple Watches, Oura Rings, Stelo monitors, Whoop bands.) They recognize patterns and flag pitfalls such as a poor night of sleep, high stress levels, elevated heart rate or even an illness brewing and can guide you accordingly.

That’s key so you don’t get frustrated and quit your weight-loss efforts. Dr. Prologo says, “The variable that really matters when it comes to changing your weight is adherence.” That’s a sciency word for sustainability. “We used to tell patients to white-knuckle it,” he explains. “But you can’t ask people to just overcome obesity with their minds.”

Now with AI technology, “we have a treatment to help you adhere to your regimen.” For example, AI can nudge you to get more sleep for energy, to drink more water so you don’t mindlessly snack and to eat more protein to fuel workouts. Without those subtle corrections, weight-loss attempts likely felt impossible before. “In the absence of a GLP-1 drug, AI is the best tool we have to lose weight,” Dr. Prologo says.

When not to use AI for weight loss advice

While AI is an incredible tool, it works best when you team it up with your doctor’s expertise in two key areas:

• Supplements. “I don’t like using AI for supplement recommendations,” Dr. Mitchell says. “AI tools tend to steer people toward what’s popular, not necessarily what’s best.”
• Chronic health conditions. Dr. Mitchell says not to rely on AI when treating chronic illnesses. “I might not agree with what AI gives as a certain amount of carbs to eat for my diabetic patient.” So always check with your doctor.

Cody Grammer lost 100 pounds with an AI weight loss app

Remember Cody Grammer, whose dangerous blood pressure reading started her journey? Here’s exactly how she used AI to transform her health.

In the emergency room, a doctor recommended using the Simple: AI Weight Loss Coach app. The tech platform has helped users shed 18 million pounds worldwide so far. Cody downloaded the app, which offers a limited free version alongside a paid premium subscription, and began using it to track her food, move more and practice intermittent fasting, only eating between 10 AM and 4 PM each day. She took photos of meals and had them analyzed for calories and macronutrients. The app even approximately estimated Cody’s body fat percentage from a photo.

Cody also asked the virtual AI coach, named Avo, questions. “Is the meal I’m planning healthy or should I change it?” It would answer, suggesting tweaking the sauce to have less saturated fat or salt, adjustments that were blood-pressure friendly. The AI coach taught Cody to meditate to reduce stress and drink water to curb cravings. It guided her through wall Pilates workouts. And it sent reminders, asking: “Are you going to do some movement today? I’d love to see you do it.’” It helped.

“Tracking my food was a big eye-opener,” says Cody. “It was amazing to me how many things had saturated fats in them. I saw all the bad things I was eating, and I thought, ‘The app isn’t going to like that.’” So the Bakersfield, California mom traded pizza and burgers for Greek yogurt, cottage cheese, tuna, salmon and ground turkey. Those healthy tweaks made the Simple app’s virtual motivator—named Blinky—happy.

After the first two weeks, Cody lost 10 pounds. She loved how accessible AI was along the way. “There was no way I could afford stuff like a trainer or a nutritionist.” After shedding 100 pounds, she says, “I feel great!” Cody gushes, “I do so many more things with my kids. I took my oldest boogie boarding in the ocean!”

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Here are more ways to put AI to work for you to fuel your results:

• Get easy advice: Complex medical jargon? Use this code prompt: “ELI5.” It stands for “explain like I’m 5.”
• Level up: For meal suggestions, request “good, better, best” options so you can make healthy choices.
• Give me 10: Got a fitness goal? Ask for a list of the 10 best YouTubers to teach you the right moves.
• Record your doctor visits: With patients’ permission, many doctor appointments are now audio-recorded with an AI tool called OpenEvidence so you can leave with a summary of what was discussed. Think of it like a prescription for diet and exercise advice.

Bottom line: AI tools are available right now—many of them free—to guide you every step of the way. Let Cody’s experience inspire you to launch your own success starting today!

This story originally appeared in the September 25, 2026, issue of Woman’s World.