Why I Modified the One Meal a Day Diet After 45

Written by Mike Cola

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June 15, 2026

One Meal a Day After 45: Why I Modified OMAD for Better Fat Loss

One Meal A Day (OMAD) has become one of the most popular fat-loss strategies in the world.

And for good reason.

For many people, eating one meal per day naturally reduces calories, simplifies nutrition, and can be an effective way to lose body fat.

But after coaching adults over 45 for more than 40 years, I’ve found there can be one major problem with traditional OMAD.

It can be difficult to get enough protein and maintain muscle while eating only one meal per day.

That’s why I often use a modified approach I call OMAD 1.5.

Instead of eating just one meal, OMAD 1.5 consists of one small high-protein meal plus one larger meal later in the day.

This simple modification allows many people to enjoy the benefits of OMAD while making it much easier to hit their protein goals and preserve lean muscle.

When I Use OMAD 1.5

During business travel
During vacations
During maintenance phases
After higher-calorie weekends
Anytime I want an easy way to create a lower-calorie day without feeling deprived

One of the biggest mistakes I see adults over 45 make is focusing only on weight loss while ignoring muscle retention.

The goal isn’t simply to lose weight.

The goal is to lose body fat while maintaining as much muscle as possible.

That’s why protein becomes increasingly important as we age.

For many of my clients, a small high-protein meal earlier in the day followed by a larger dinner creates a sustainable structure that fits their lifestyle while helping them stay in control of calories.

Like any nutrition strategy, OMAD isn’t magic.

Calories still matter.

Protein still matters.

Food quality still matters.

But for the right person, OMAD 1.5 can be an effective tool that makes fat loss simpler and easier to maintain over the long term.

This is one of the strategies I teach inside The Over 45 Fit Project™, where I help busy adults lose stubborn body fat, build strength, improve lab work, and create results that last.