New research suggests that a daily cup of joe can ‘protect’ the brain from cholesterol, and stave off Alzheimer’s. And last week the news was that having a fat gut can increase risk of dementia.

“Caffeine appears to block several of the disruptive effects of cholesterol that make the blood-brain barrier leaky,” said Dr Jonathan Geiger, who led the study.

“High levels of cholesterol are a risk factor for Alzheimer’s disease, perhaps by compromising the protective nature of the blood brain barrier.

“Caffeine is a safe and readily available drug and its ability to stabilise the blood brain barrier means it could have an important part to play in therapies against neurological disorders.”

A spokesman for the Alzheimer’s Society said that the barrier seemed to work less efficiently in people who went on to develop Alzheimer’s or suffer strokes, and the cholesterol link might explain this.

“This is the best evidence yet that caffeine equivalent to one cup of coffee a day can help protect the brain against cholesterol.

“In addition to its effect on the vascular system, elevated cholesterol levels also cause problems with the blood brain barrier.”

But, unfiltered coffee such as espresso or presspot supposedly can raise your cholesterol. I say do what you will.