Healthy in old age: Five tips for a fitter brain. If you want to stay fit into old age, you should start training early.
Stress, poor nutrition and too little exercise are factors that you should definitely avoid for the sake of your brain. The messenger substance serotonin, which is produced in the intestine, is particularly important for the fitness of the brain. Serotonin, also known as the happiness hormone, is only produced in moderation in depressed people. To boost production, it is therefore advisable to keep the microbiome in balance.