First thing, we do not reach thebalanced diet, we only tend towards him. If weight gain, whatever the cause, always results from an imbalance in the energy balance (the contributions are greater than the expenditure of the body), the thinness, it is not always at the appointment while we eat everything and without excess. Blame it on …
Our basal metabolism
It corresponds to what the body burns at rest, that is to say the energy necessary for the functioning of vital organs (cells, respiratory movements, heartbeat, etc.). This energy expenditure represents 60 to 70% of the total energy expenditure of the organism but many factors can modify this basic metabolism, such as age (the older we get, the less calories we burn at rest), sex (the woman has a basal metabolic rate that is 10% lower than that of a man of the same height and age, because she has less lean mass at equal weight) or even muscle mass (the more muscular an individual, the more it consumes energy at rest).
Predisposing factors
To date, we know, for example, that 127 genes can be directly or indirectly involved in weight gain. This is to say if a genetic disorder can interfere with the stabilization of the weight even with a balanced diet. By altering the basal metabolism, endocrine disorders (such as hypothyroidism) can also be responsible for gradual and insidious weight gain.
Physical inactivity
A gradual reduction in physical effort in most daily acts (professional or domestic activities, travel, leisure, etc.) frequently leads to weight gain. It has in fact been measured that 6,000 steps per day allow a person who has never gained weight not to gain weight, that 8,000 allow a person who has lost weight not to gain weight, and that 10,000 help to weight loss.
Taking certain medications
Antidepressants, antiepileptics, neuroleptics …, can increase the feeling of hunger, or even trigger unwanted cravings for sugar that interfere with the balance of food. Likewise, prolonged, high-dose hormonal treatment, or a large intake of corticosteroids, are sometimes the cause of water retention and fat gain.
The different hormonal cycles, smoking cessation …
Episodes of genital life in women, smoking cessation, alternating day and night work, anxious state and overwork, stress…, can be the cause of weight gain.
An eating disorder: quèsako?
In some people, eating behavior can be disturbed to the point of interfering with daily life, and being the cause of excess weight often accompanied by mental distress. This is the case for bulimia or anorexia, nocturnal eating disorders, orthorexia (the person is obsessed with the quality of their diet), binge eating (episodes of excessive consumption of certain foods). in less than two or three hours), etc.
