Similar to the tiny substances that are found in medications, tiny substances in foods can also exert effects on the body! (thyroidpharmacist.com)
Recent theoretical models have suggested that parenting may exert effects on ADHD via its role in child temperament. (link.springer.com)
Another hypothesis is that instead of secreting chemicals, astrocytes exert their effects by controlling the uptake of neurotransmitters from the space surrounding neurons, thereby affecting neuron activity indirectly. (sciencedaily.com)