<i>&quot;Among Bulletproof coffee&#x27;s listed benefits: It triggers weight loss by way of ketosis...&quot;</i><p>Just having bulletproof coffee for breakfast won&#x27;t put you into ketosis (the state of using fat-derived ketone bodies for energy). You&#x27;d also need to have a radically low amount of carbs in the rest of your your diet. Otherwise, you&#x27;ll have ample supplies of glycogen in your liver that will be providing you with glucose to fill your energy needs between breakfast and lunch.<p>According to Wikipedia, it takes about 48 hours of carb deprivation to make your body switch to burning ketone bodies for energy:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ketosis#Diet" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ketosis#Diet</a>