Once inside the mitochondrion, the dominant way that the bound fatty acids are used as fuel in cells is through β-oxidation, which cleaves two carbons off of the acyl-CoA molecule in every cycle to form acetyl-CoA. Acetyl-CoA enters the citric acid cycle, where it undergoes an aldol condensation with oxaloacetate to form citric acid; citric acid then enters the tricarboxylic acid cycle (TCA), which harvests a very high energy yield per carbon in the original fatty acid.
The brain is a particularly greedy organ when it comes to energy requirement. To put this comment in perspective consider the following: though our brain represents only about 2% of our body mass, it accounts for about 20% of our energy expenditure. (In children, by the way, this may be closer to 40-50% of basal metabolic demand.) So, beyond the ATP issue, above, there is a substrate issue with the brain as neurons derive most of their energy from glucose. While there is emerging evidence that neurons can also oxidize fatty acids directly in small amounts and may even prefer lactate (over glucose), these two substrates do not approach the levels of consumption by neurons that glucose does. So, for the purpose of this discussion, let’s just focus on the need of the body to provide glucose to the brain.
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Hey there… I’m new to keto, so I’m hoping my questions don’t come across as really stupid. Your bread looks great, and if I can get bread again, then that’s simply awesome. The pictures remind me of banana bread. Is there a way of adding this flavor without going insanely overboard on the carbs? And without that artificial banana taste? Also, would this recipe work as muffins? Thanks, Kelly
I waited awhile to try this, certain it would be blah but decided to give it a go. I did add a pinch of salt and I used Brummel and brown butter, made with yogurt, as it lowered the fat and calories. toasted and spread some sugar free strawberry preserves. really good! texture took a bit to get used to but so excited to be able to eat bread! not on keto but recently diagnosed as diabetic so bread is a nono bc of all the carbs.
^ Brunner EJ, Hemingway H, Walker BR, Page M, Clarke P, Juneja M, Shipley MJ, Kumari M, Andrew R, Seckl JR, Papadopoulos A, Checkley S, Rumley A, Lowe GD, Stansfeld SA, Marmot MG (November 2002). "Adrenocortical, autonomic, and inflammatory causes of the metabolic syndrome: nested case-control study". Circulation. 106 (21): 2659–65. doi:10.1161/01.cir.0000038364.26310.bd. PMID 12438290.
This keto bread recipe delivers sweet heat with no corn whatsoever — instead, it uses a blend of coconut flour and sweetener to capture the same taste and texture for about 3 net carbs per serving. Add fresh cranberries and jalapeño slices for a fun twist that pairs well with holiday meals. To keep this recipe more Bulletproof, use grass-fed butter, swap almond milk with full-fat canned coconut milk, and skip the peppers if you have a nightshade sensitivity.
One of the foods that people tell us they miss most after going keto is bread. (And cookies or cakes, but you get the idea.) We get it, bread is undeniably comfort food. Growing up, it wasn’t unheard of to eat toast for breakfast, a sandwich for lunch, and maybe even a slice of buttered bread along with dinner. Not only is that ton of carbs, but it’s also a lot of empty calories when we could have been eating real-food alternatives, like this bread made from nutrient-dense ingredients!