I’m not here to tell you to skip breakfast. In fact, I love breakfast—it’s one of the most grounding parts of my day. What I’ve changed isn’t what I eat, but when.
For me, the sweet spot has been the 16:8 intermittent fasting rhythm: I eat breakfast a little later in the morning, enjoy lunch, and finish with an early dinner—always before 6 p.m. That gives my body a solid 16-hour window overnight to rest, repair, and reset before my next meal.
And the difference has been night and day. My digestion is calmer. My sleep is deeper. My energy feels steady instead of spiking and crashing. And surprisingly, my relationship with food has become more peaceful. I’m not grazing mindlessly all day anymore—I’m fueling with intention.
Why the Science (and Harvard’s Dr. David Sinclair) Back It Up
I’m not alone in this. Dr. David Sinclair, Harvard Medical School professor and one of the world’s leading experts on longevity, follows this same practice. He explains,
“You want to have a period of fasting each day… The one that I try to go for is 16 to 18 hours without eating a large meal. That’s basically having a very late lunch or large dinner.”
His research shows that too much constant eating puts the body in “abundance mode,” shutting off longevity pathways. But when you create a daily fasting window, your body activates genes that repair damage, burn fat, and protect against aging.
How It Works in Real Life
Intermittent fasting isn’t about eating less—it’s about timing. Here’s what happens during those fasting hours:
Insulin levels drop, making it easier for your body to burn fat.
Autophagy turns on, a cleanup process where your body recycles old cells.
Inflammation decreases, which supports brain health, hormones, and long-term wellness.
The beauty is that you don’t need to count calories or eliminate food groups. You simply align your meals within an 8-hour window, giving your body time to reset overnight.
Popular Fasting Styles (And Why I Choose 16:8)
There’s more than one way to practice intermittent fasting.
16:8 — Fast 16 hours, eat within an 8-hour window (my routine: late breakfast, lunch, early dinner).
12:12 — A gentle start: fast 12 hours, eat over 12.
5:2 — Eat normally 5 days, restrict calories 2 days.
Alternate-Day Fasting — Eat normally one day, fast or eat very lightly the next.
Fasting-Mimicking Diet — Plant-based, very low-calorie meals for 5 days designed to mimic fasting.
All of these can work, but 16:8 feels sustainable because it honors my love for breakfast and my preference for an early dinner.
What You Can Have While Fasting
This was one of my biggest questions starting out: what counts as “fasting”? Here’s what works:
Water (still, sparkling, or infused with lemon)
Black coffee
Unsweetened tea
Herbal infusions (mint, ginger, chamomile)
That’s it. No cream, no sugar, no protein shakes until your eating window opens.
What to Eat During Your 8-Hour Window
Your eating hours are where the magic really happens. If you fill them with ultra-processed snacks and sugar, you’ll cancel out the benefits. I focus on:
Protein at every meal (eggs, fish, legumes, poultry)
Colorful plants for fiber and antioxidants
Healthy fats (avocado, olive oil, nuts, seeds)
Mostly whole foods cooked at home
My breakfast often looks like veggie-packed eggs with avocado toast, or a smoothie loaded with greens and berries. Dinner is light but satisfying—grilled salmon with roasted vegetables, or a hearty lentil soup.
Who Should—and Shouldn’t—Try It
Intermittent fasting can be powerful, but it isn’t for everyone. If you’re pregnant, breastfeeding, underweight, recovering from an eating disorder, or on medications that require food at specific times, this is not the strategy for you.
For many women in midlife, though, IF can be a sustainable way to balance hormones, protect brain health, and reduce inflammation without feeling deprived.
Why I’ll Never Go Back
I didn’t need another diet. What I needed was a rhythm that made me feel strong, clear, and aligned with my body. Intermittent fasting gave me that.
It’s not about skipping meals—it’s about honoring my body’s need for both nourishment and rest. And with research from leaders like Dr. David Sinclair backing up what I feel in my own life, I know this isn’t just another trend. It’s a lifestyle I can carry into the decades ahead.
Case Study: Intermittent Fasting & Diet in Midlife Women
Background:
Susan, 57, came to me frustrated. She had tried nearly every “healthy diet” trend in the past decade low-carb, low-fat, calorie counting but nothing seemed to stick. She was experiencing stubborn weight gain around her middle, afternoon energy crashes, and restless sleep.
Intervention:
Together, we shifted Susan to a 16:8 intermittent fasting schedule:
Eating window: 10 a.m.–6 p.m. (so she could still enjoy breakfast and family dinners early in the evening)
Fasting window: 16 hours overnight
During her eating hours, we focused on nutrient-dense meals rather than restriction:
Breakfast (10 a.m.): Eggs with spinach, avocado, and berries
Lunch (1 p.m.): Grilled salmon, roasted veggies, and quinoa
Snack (3 p.m.): Apple with almond butter
Dinner (5:30 p.m.): Lentil soup with leafy greens and olive oil drizzle
Hydration during fasting hours included water, black coffee, and green tea.
Results (After 12 Weeks):
Lost 12 pounds, mostly visceral fat around the midsection
Reported steady energy throughout the day without afternoon crashes
Improved sleep quality, falling asleep faster and waking less often
Lab work showed reduced fasting glucose and improved insulin sensitivity
Most importantly, she described feeling “calm around food” for the first time in years
Takeaway:
The combination of intermittent fasting with a Mediterranean-style diet helped Susan tap into her body’s natural repair systems, improve her relationship with food, and support healthy aging.
This echoes findings from a 2024 study in Cell Metabolism, where older adults practicing intermittent fasting saw not only metabolic improvements but also gains in memory and executive function compared to standard healthy diets (Hadel et al., 2024).
Key Study: Fasting & Brain Health in Older, Insulin-Resistant Adults
A 2024 randomized clinical trial published in Cell Metabolism examined how intermittent fasting compares to a healthy living diet in adults aged around 60 with insulin resistance.
What the Researchers Found:
Both intervention groups—those following intermittent fasting (specifically the 5:2 protocol) and those following a standard USDA-approved healthy diet—showed improvements in:
Insulin resistance biomarkers in neuron-derived extracellular vesicles
BrainAGE (a metric for biological brain aging)
Brain glucose levels (via MR spectroscopy)
Crucially, improvements in executive function and memory were even more significant in the fasting group compared to the standard-diet group. pubmed
Reference
Hadel, L. M., et al. (2024). Intermittent fasting versus USDA healthy living diet in insulin resistant adults: Effects on brainAGE, cognition, and metabolic markers. Cell Metabolism. https://pubmed.ncbi.nlm.nih.gov/38901423/
Wikipedia contributors. (2025). Intermittent fasting. In Wikipedia. https://en.wikipedia.org/wiki/Intermittent_fasting
