Thank you for the terrific recipe. I must admit that this really turned out to be “oopsie bread” for me. Due to the expensive nature of the recipe (organic eggs, almond flour, grass fed butter) I really attempted to follow the recipe perfectly instead of going with my usual improvisational style. I also do not have a food processor however that did not impede anything… a hand mixer and a deft hand did the trick. I did add the optional xanthum gum and erythritol but not the cream of tartar. The batter filled my silicone loaf pan to the top, I smoothed it out and popped it into the oven. Then, to my horror, I saw the little pot of melted butter still on the stovetop. There was nothing to be done except cross my fingers and hope for the best.
The Caerphilly Heart Disease Study followed 2,375 male subjects over 20 years and suggested the daily intake of a pint (~568 ml) of milk or equivalent dairy products more than halved the risk of metabolic syndrome.[51] Some subsequent studies support the authors' findings, while others dispute them.[52] A systematic review of four randomized controlled trials found that a paleolithic nutritional pattern improved three of five measurable components of the metabolic syndrome in participants with at least one of the components.[53]
The last point I’ll make on the starving patient is that, as you can see in the figure below, the glucose level normalizes at about 65-70 mg/dL (about 3.7 mM) within days of fasting, despite no sources of exogenous glucose.  Why?  Because with so much fat being converted into B-OHB and acetoacetic acid by the liver, a significant amount of glycerol (the 3-carbon backbone of triglycerides) is liberated and converted by the liver into glycogen.  As an aside, this is why someone in nutritional ketosis – even if eating zero carbohydrates – still has about 50-70% of a normal glycogen level, as demonstrated by muscle biopsies in such subjects.
Parkinson’s disease (PD) is caused by death of neurons in a region of the brain called the ‘substantia nigra.’ As well as loss of neurons, those that survive accumulate misfolded proteins called “Lewy Bodies,” exhibit increased inflammation and impaired mitochondrial function. PD is most common in individuals over the age of 60 and is primarily characterised by poor control of movement (shaking, rigidity etc). Neuronal death leads to decreased levels of a neurotransmitter called dopamine, which is a key factor in the deterioration of motor function. Current treatments for PD centre on replacing dopamine using a drug called L-DOPA, which is a precursor to dopamine. This drug treats the symptoms of PD but not the underlying cause. 
The 2 major issues that will lead to a flat loaf is not whipping the egg whites and gently folding them in OR using almond meal instead of a finely ground almond flour. If you've tried everything and they don't seem to be working for you, the next best option will be to make a larger recipe. Try making 1.5x this recipe (it's easy to do using the servings slide bar) and you'll have a much larger loaf.