Three months ago, my doctor looked at my bloodwork and said something I wasn't expecting: "Whatever you're doing, keep doing it." My fasting glucose had dropped from 108 mg/dL to 91. My triglycerides went from 187 to 134. And I'd lost 14 pounds without counting a single calorie.
The thing is, I hadn't done anything dramatic. No keto. No marathon training. No expensive supplements. I just stopped eating breakfast.
Well, that's the oversimplified version. Let me tell you what actually happened.
What Intermittent Fasting Actually Is (and Isn't)
Intermittent fasting isn't a diet — it's an eating pattern. You're not changing what you eat, you're changing when you eat. The most popular approach is 16:8, meaning you fast for 16 hours and eat within an 8-hour window.
For me, that meant my first meal at noon and my last bite by 8 PM. That's it. No magic pills. No proprietary shakes. Just a clock.
According to the National Institutes of Health, research on intermittent fasting has exploded in the past decade, with studies showing potential benefits for weight management, metabolic health, and even cognitive function. But — and this is important — it's not for everyone, and the science is still evolving.
Week 1: Why Everyone Quits (and Why I Almost Did)
Let me be real. The first four days were rough. Not unbearable, but rough.
I'm someone who's eaten breakfast every single morning since I can remember. Eggs and toast at 7 AM was practically a religious ritual. Taking that away felt like removing a load-bearing wall from my daily routine.
The hunger pangs hit hardest around 9-10 AM. My stomach growled during meetings. I got a headache on day 2 that lasted most of the afternoon. I was irritable enough that my coworker asked if I was okay.
But by day 5, something shifted. The morning hunger just... faded. Not completely, but enough that black coffee and water carried me to noon without drama.
Dr. Jason Fung, a nephrologist and author who has extensively studied fasting, explains this as your body adapting to using stored fat for energy instead of constantly relying on incoming food. Whether that's exactly what was happening in my body, I can't say for certain. But something definitely changed.
The Science Behind the Clock
Here's what we actually know from research, based on studies published in the New England Journal of Medicine and reviewed by the World Health Organization:
Insulin sensitivity improves. When you're not constantly eating, your body produces less insulin throughout the day. A 2019 study in Cell Metabolism found that early time-restricted feeding improved insulin sensitivity in men with prediabetes — even without weight loss.
Autophagy ramps up. This is your body's cellular cleanup process. Think of it like your cells taking out the trash. Research suggests fasting periods of 14-16+ hours may trigger this process, though human studies are still limited.
Inflammation markers decrease. A study from Mount Sinai, published in Cell, found that fasting reduced the release of pro-inflammatory cells called monocytes, with the most inflammatory ones becoming less active.
But I want to be careful here. Much of the most exciting fasting research has been done on animals or in small human trials. The CDC doesn't currently have specific recommendations for or against intermittent fasting. We're still learning.
What I Ate (Because People Always Ask)
I didn't follow any specific diet during my eating window. But I naturally started making better choices — and I think that's one of the underrated benefits of IF.
When you only have 8 hours to eat, you become more intentional. Breaking a 16-hour fast with a bag of Doritos feels wrong in a way that eating Doritos at 2 PM on a regular day doesn't. It's psychological, but it works.
A typical day looked like:
- Noon: Large salad with grilled chicken, avocado, nuts, olive oil dressing. Sometimes a grain bowl with quinoa and roasted vegetables.
- 3 PM: Snack — apple with almond butter, or Greek yogurt with berries.
- 7 PM: Regular dinner — salmon with vegetables, pasta with meat sauce, stir-fry with rice. Whatever my family was eating.
I didn't track calories. I didn't weigh food. I ate until I was satisfied, not stuffed.
The Results: By the Numbers
After 90 days:
- Weight: 198 lbs → 184 lbs (-14 lbs)
- Waist: 36" → 33.5"
- Fasting glucose: 108 mg/dL → 91 mg/dL
- Triglycerides: 187 mg/dL → 134 mg/dL
- Energy levels: Noticeably better by week 3
- Sleep: Improved — I stopped eating close to bedtime
The National Institute of Diabetes and Digestive and Kidney Diseases considers fasting glucose under 100 mg/dL as normal. I went from prediabetic territory to solidly normal. That alone made the whole experiment worth it.
Who Should NOT Try Intermittent Fasting
This is critical, and too many IF articles skip over it. According to medical guidelines from the Mayo Clinic and the Academy of Nutrition and Dietetics:
- Pregnant or breastfeeding women — you need consistent nutrition
- People with a history of eating disorders — fasting can trigger restrictive patterns
- Type 1 diabetics or those on insulin — blood sugar management requires careful medical supervision
- Children and teenagers — growing bodies need regular fuel
- Anyone on medication that requires food — talk to your doctor first
And honestly? Even if you don't fall into these categories, talk to your doctor before starting. I did, and it made the whole process safer and more productive because we could track actual biomarkers.
What I'd Do Differently
If I started over, three things:
I'd start with 14:10 instead of 16:8. The jump to 16 hours was harder than it needed to be. Easing in over two weeks would have been smarter and probably more sustainable for most people.
I'd drink more water. I was chronically under-hydrated the first month. Turns out, a lot of our daily water intake comes from food — especially breakfast foods. When you skip those, you need to consciously drink more.
I'd stop telling everyone about it. Nothing kills motivation faster than unsolicited opinions from people who've never tried it. "Breakfast is the most important meal of the day" is not, in fact, a scientific consensus — it's a marketing slogan from cereal companies. But try explaining that at a family brunch.
The Bottom Line
Intermittent fasting isn't magic. It's a tool. Like any tool, it works great for some jobs and terribly for others.
For me — a 38-year-old guy with prediabetic markers, a sedentary job, and zero interest in counting macros — it was exactly the right tool at the right time. Your situation might be completely different, and that's okay.
Start slow. Listen to your body. Get bloodwork done before and after. And please, for the love of everything, talk to your doctor first.
Medical Disclaimer: This article is for informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you read on this website.