N2 nicotinic receptors are found in the brain, plus the autonomic and parasympathetic nervous systems [1]. Different subunits make up these two types of nicotinic receptor, which is why we consider them separately. Muscarinic receptors have a different mechanism of action.
Your body weight can regularly fluctuate, but the persistent, unintentional loss of more than 5% of your weight over 6 to 12 months is usually a cause for concern. You should pay particular attention if you experience other symptoms, such as tiredness, loss of appetite and a change in your toilet habits.
Weight gain can result from a change in diet or level of physical activity and can lead to obesity and other chronic diseases. More... 5.2 Certain types of foods and eating habits such as snacking, binge-eating, and eating out can contribute to excessive weight gain and obesity.