Coffee and Chocolate Make You Smarter

From Inc.com

There's no longer any controversy: Every healthy diet should include at least some caffeine.

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Neuroscience continues to uncover new ways that coffee and (to a lesser extent) tea and chocolate, tend to make brains healthier and more resilient. 2019 has already seen some amazing research breakthroughs that are definitely worth sharing.

First, a joint study from the National Institute on Aging and Johns Hopkins University, and published last January in Neurochemical Research magazine, discovered that a methylxanthines--a class of chemical found in coffee, tea and dark chocolate (cacao)

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"has clear effects on neuronal network activity, promotes sustained cognitive performance and can protect neurons against dysfunction and death in animal models of stroke, Alzheimer's disease and Parkinson's disease."

That same study also discovered that xanthine metabolites--a chemical released when your brain processes caffeine, "may also contribute to the beneficial effects of coffee, tea and cacao on brain health."

Second, a meta-analysis of 11 studies on the impact of coffee on brain health and published in World Journal of Surgical Oncology showed that both coffee and tea (and thus, by extension, cacao) doesn't just reduce the risk of alzheimer's disease but also reduces the risk of brain cancer.

Finally, a groundbreaking study at Okayama University

"indicated that intake of coffee components, CA and CGA, enhanced the antioxidative properties of glial cells and prevents rotenone-induced neurodegeneration in both the brain and myenteric plexus."

Translation: caffeine makes your brain more flexible and resilient.

The big takeaway: if you want to keep your brain healthy both today and in the future as you age, you should be consuming coffee, tea, or cacao.

How much?

Well, chances are you're not consuming enough. Studies have shown that the ideal daily dosage of coffee is about six to eight 8oz cups, ideally consumed prior to 2pm so that it doesn't disturb your sleep.

If that sounds like too much coffee, consider replacing a cup or two with an ounce of dark chocolate. It need hardly be said that, for other health reasons, you should be consuming coffee, tea and cacao without sugar or creamer.  But you still get the brain-boost, regardless.

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Junk food can lead to blindness

The brain, master control for all of our senses, enables our vision. Click here for more information.

   

September 3, 2019   

Source: University of Bristol

Summary:              

An extreme case of 'fussy' or 'picky' eating caused a young patient's blindness, according to a new case report. The researchers who examined the case recommend clinicians consider nutritional optic neuropathy in any patients with unexplained vision symptoms and poor diet, regardless of BMI, to avoid permanent vision loss.         

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French fries (stock image).

Credit: © Pixelbliss / Adobe Stock

                                       

An extreme case of "fussy" or "picky" eating caused a young patient's blindness, according to a new case report published today in Annals of Internal Medicine.

                                                               

The University of Bristol researchers who examined the case recommend clinicians consider nutritional optic neuropathy in any patients with unexplained vision symptoms and poor diet, regardless of BMI, to avoid permanent vision loss.

Nutritional optic neuropathy is a dysfunction of the optic nerve which is important for vision. The condition is reversible, if caught early. But, left untreated, it can lead to permanent structural damage to the optic nerve and blindness.

In developed countries like the UK, the most common causes of nutritional optic neuropathy are bowel problems or drugs that interfere with the absorption of various important nutrients from the stomach. Purely dietary causes are less common because food supply is good, but elsewhere in the world, poverty, war and drought are linked to malnutrition and higher rates of nutritional optic neuropathy.

Clinician scientists from Bristol Medical School and the Bristol Eye Hospital examined the case of a teenage patient who first visited his GP complaining of tiredness. The link between his nutritional status and vision was not picked up until much later, and by then, his visual impairment had become permanent.

Aside from being a "fussy eater," the patient had a normal BMI and height and no visible signs of malnutrition and took no medications. Initial tests showed macrocytic anemia and low vitamin B12 levels, which were treated with vitamin B12 injections and dietary advice. When the patient visited the GP a year later, hearing loss and vision symptoms had developed, but no cause was found. By age 17, the patient's vision had progressively worsened, to the point of blindness. Further investigation found the patient had vitamin B12 deficiency, low copper and selenium levels, a high zinc level, and markedly reduced vitamin D level and bone mineral density. Since starting secondary school, the patient had consumed a limited diet of chips, crisps, white bread, and some processed pork. By the time the patient's condition was diagnosed, the patient had permanently impaired vision.

The researchers concluded that the patient's 'junk food' diet and limited intake of nutritional vitamins and minerals resulted in the onset of nutritional optic neuropathy. They suggest the condition could become more prevalent in future, given the widespread consumption of 'junk food' at the expense of more nutritious options, and the rising popularity of veganism if the vegan diet is not supplemented appropriately to prevent vitamin B12 deficiency.

Dr Denize Atan, the study's lead author and Consultant Senior Lecturer in Ophthalmology at Bristol Medical School and Clinical Lead for Neuro-ophthalmology at Bristol Eye Hospital, said: "Our vision has such an impact on quality of life, education, employment, social interactions, and mental health. This case highlights the impact of diet on visual and physical health, and the fact that calorie intake and BMI are not reliable indicators of nutritional status."

The team recommends dietary history should be part of any routine clinical examination like asking about smoking and alcohol intake. This may avoid a diagnosis of nutritional optic neuropathy being missed or delayed as some associated visual loss can fully recover if the nutritional deficiencies are treated early enough.

The brain, master control for all of our senses, enables our vision. Click here for more information.

                                                               

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Materials provided by University of Bristol. Note: Content may be edited for style and length.