Bacteria from infected gums has been found in the brains of Alzheimer's patients, and scientists have started to understand how it can move through the body from the infected gums and into the brain.

They suspect the bacteria from gum disease, or periodontitis, could also be a cause of rheumatoid arthritis and aspiration pneumonia, a lung infection from inhaling food or saliva.

Candida albicans is a yeast infection that causes inflammation in the brain and leads to mild and temporary memory problems. The yeast causes granuloma-type structures that are similar to plaques seen in Alzheimer's sufferers.

The attacks have produced symptoms remarkably similar to the effects of pulsed radiofrequency and microwave electromagnetic (RF/MW) radiation, which are emitted by cell phones, wi-fi networks and microwave ovens, says one of the world's leading experts.

Studies that have deemed the devices to be safe are usually paid for by manufacturers, says Beatrice Golomb, professor of medicine at the University of California's San Diego School of Medicine.

The nutrient helps regulate memory and nervous system functioning, and its richest sources include chicken liver, eggs, grass-fed steak and milk—which are off-limits for vegans or vegetarians. The non-meat sources of choline include Brussels sprouts and wheat germ.

The two compounds—caffeine and EHT (Eicosancyl-5-hydroxtryptamide), a fatty acid derivative of serotonin, a neurotransmitter—combine to protect the brain against abnormal protein accumulation that's seen in Lewy body cases. Taken separately, neither compound has a protective effect on its own.

The anti-epileptics that impair cognitive function also raise the risk for dementia by 60 per cent and Alzheimer's by 20 per cent—and the risk can be even higher if the regular dose of the drug is greater, say researchers from the University of East Finland.

It's already known that gum disease—also known as periodontal disease—can cause cognitive problems, but researchers at the University of Illinois have discovered that it could also be causing Alzheimer's.

Those whose cholesterol levels had increased since middle-age were, on average, 32 per cent less likely to suffer from dementia, Alzheimer's and memory loss, say researchers from the Icahn School of Medicine, who studied 1,897 people aged between 75 and 94 years.

Women are more likely than men to develop Alzheimer's, and taking HRT increases the risk by a further 19 per cent.

The hormone therapy has now been stopped, but the proteins can also be carried on surgical instruments, say researchers from University College London.

They can't be sure that the growth hormones cause Alzheimer's disease, but they are concerned that they contain seeds that cause amyloid pathology in the brain, one of the chief characteristics of the disease.

Remarkable results have been recorded in people who have taken curcumin supplements, with dramatic improvements in memory, attention and even mood.

The 230 scientists from around the world say the electro-magnetic fields generated by the 5G (fifth-generation) network can increase the risk of cancer, affect fertility, and cause neurological disorders, such as learning and memory problems, and even Alzheimer's disease.

The compounds—EGCG (epigallocatechin gallate) in green tea and tannic acid in red wine—block the formation of toxic metabolites, molecules that are the building blocks of DNA and proteins, that occurs in people born with defective genes.

People born with metabolic diseases accumulate metabolites that, in large quantities, can be toxic and cause severe developmental and mental disorders. They've been linked to neurodegenerative problems such as Alzheimer's and Parkinson's disease, metabolic diseases, and some cancers. A common metabolic disorder in children is PKU (phenylketonuria).

Alzheimer's sufferers, and those who want to increase their chances of avoiding it, should start drinking green tea, and foods rich in ferulic acid (FA)—such as carrots, tomatoes, rice, wheat and oats—straight away, researchers say.

Although animal study results don't always translate to humans, the finding does suggest that a holistic approach, that includes a good diet and plant-based supplements, could protect against, and even reverse, Alzheimer's disease and dementia, researchers from the University of Southern California say.

The nuts help raise levels of magnesium and alpha tocopherol, or vitamin E, two nutrients that help protect against a range of age-related health problems such as Alzheimer's disease.