Links between gut bacteria and autism

According to the latest research, gut bacteria could cause spectrum disorder. Pathogens in the stomach alter the brain's development and may increase risk of suffering from the spectrum disorder.

Links between the brain, gut and stress hormone cortisol can influence how messages are passed in the body, which may cause autistic symptoms.

Changes in neurometabolites in childhood can have dangerous effects on brain development. Collection of bacteria, fungi, and viruses living in humans gut may be responsible for the disorder.

Autism may be corrected by changing of diet, taking probiotics and adopting a gluten-free lifestyle which may improve social behaviour and ability to express emotions in autistic people.

Leaky gut releases toxins and even undigested food enter the bloodstream and travel to the brain, which may cause autism symptoms. Probiotics can change this by enhancing the gut's lining.
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Vigorous exercise increases health risks

Vigorous exercise for a long period of time can change the composition of gut bacteria.

The research looked at soldiers taking part in an intensive training programme and found that pro-longed exercise caused the protective barrier in their guts to become permeable and triggered leaky gut syndrome.

Gut health and overall health are linked, intense physiological stress could raise the risks of many types of illnesses.

 Poor gut health is linked to conditions ranging from irritable bowel syndrome, diabetes, high blood pressure, depression, obesity, childhood asthma, colitis and colon cancer.

The study is the first to investigate the response of gut microbiome - the term for the population of microbes in the intestine - during military training.

It looked at a group of 73 Norwegian Army soldiers taking part in a military-style cross country skiing training programme.

The group skied 31 miles (51 km) while carrying 99-pound (45 kg) packs, across four days. Before and after the training
exercise, researchers collected blood and stool samples from the soldiers.

It was found that the microbiome and metabolites - the substance formed in or necessary for metabolism - in the soldiers' blood and stool altered 'significantly' by the end of the aggressive training period.

Furthermore, sucralose excretion in their urine samples rose considerably, indicating an increase in intestinal permeability (IP).

Scientists know that healthy intestines have a semi-permeable barrier, which acts as a defense to keep bacteria and other harmful substances out, while allowing healthy nutrients into the bloodstream.