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Diet's effect on gut bacteria could play role in reducing Alzheimer's risk -- ScienceDaily

In a small pilot study, the researchers identified several distinct gut microbiome signatures -- the chemicals produced by bacteria -- in study participants with mild cognitive impairment (MCI) but not in their counterparts with normal cognition, and found that these bacterial signatures correlated with higher levels of markers of Alzheimer's disease in the cerebrospinal fluid of the participants with MCI. Through cross-group dietary intervention, the study also showed that a modified Mediterranean-ketogenic diet produced changes in the gut microbiome and its metabolites that correlated with reduced levels of Alzheimer's markers in the members of both study groups.

Ketogenic Diet for Schizophrenia: Clinical Implication

Abnormal glucose and energy metabolism and mitochondrial functioning are emerging as important pathophysiological mechanism in schizophrenia. Therapeutic ketogenic diet shows promise to interfere with these processes resulting in the restoration of normal synaptic communication and alleviation of the devastating psychiatric symptoms. Furthermore, because of the impact of ketogenic diet on systemic metabolism, it is possible that the metabolic features and cardiovascular risk typical of patients with chronic schizophrenia can be addressed by this dietary intervention. However, more research is needed both at preclinical level and in the form of controlled clinical trials before ketogenic diet can take its place in the mainstream of the treatment and management of schizophrenia.

On the keto diet? Ditch the cheat day: Just one dose of carbohydrates can damage blood vessels -- ScienceDaily

"Since impaired glucose tolerance and spikes in blood sugar levels are known to be associated with an increased risk in cardiovascular disease, it made sense to look at what was happening in the blood vessels after a sugar hit." For their test, the researchers recruited nine healthy young males and had them consume a 75-gram glucose drink before and after a seven-day high fat, low carbohydrate diet. The diet consisted of 70 per cent fat, 10 per cent carbohydrates and 20 per cent protein, similar to that of a modern ketogenic diet. "We were originally looking for things like an inflammatory response or reduced tolerance to blood glucose," says Durrer. "What we found instead were biomarkers in the blood suggesting that vessel walls were being damaged by the sudden spike in glucose." Little says the most likely culprit for the damage is the body's own metabolic response to excess blood sugar, which causes blood vessel cells to shed and possibly die. "Even though these were otherwise healthy young males, when we looked at their blood vessel health after consuming the glucose drink, the results looked like they might have come from someone with poor cardiovascular health," adds Little. "It was somewhat alarming."