Why You  Don’t Want  To Be On A  Coffee Diet

Written by: Stephanie Searor, MS, RD, LDN

Many fad diets have emerged in the past years. Take for example The Coffee Lover’s Diet by Dr. Bob Arnot.  But is this one legitimate? Are there reasons not be on coffee diet?

This diet claims to improve mental clarity, fend off diseases like diabetes, promote weight loss, and improve overall health by focusing on three things.

Why The Coffee Lover’s Diet?

A minimum of three cups of black coffee a day – Swap one meal for a high fiber smoothie – Eat high fiber, low carb, or lean protein  for the remaining two meals

The core of The Coffee Lover’s Diet:

So What's The Issue?

The recommendation looks harmless enough? What's wrong with a healthy diet for coffee lovers?

 Counter to dietary recommendation of <400mg a day, the diet has no maximum coffee intake. Excess caffeine can lead to anxiety, breathing difficulty, and heart palpitations.

Caffeine Overdrive

Caffeine has a half-life of five hours, so it will still be circulating in your body after.  If you drink too much coffee caffeine it can build up and trigger side effects like difficulty in sleeping.

Too Much Caffeine 


Caffeine is a diuretic, If you consume more than 3 cups of coffee a day, you need to compensate by drinking more water. This will unnecessarily increase bathroom trips.

Restricting complete food groups is not a sustainable way to lose weight. It may work short term, but can lead to weight gain when later expanding your diet.

You lose weight because you eat less...


Slow and consistent weight loss is a better approach than relying on quick diets that promise fast results.


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