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Like many other medical conditions, obesity is the result of an interplay between environmental and genetic factors. [2] [3] Studies have identified variants in several genes that may contribute to weight gain and body fat distribution; although, only in a few cases are genes the primary cause of obesity.
Weight gain is an increase in body weight. This can involve an increase in muscle mass , fat deposits , excess fluids such as water or other factors. Weight gain can be a symptom of a serious medical condition.
Weight loss seems to get all the attention, but there are plenty of cases where weight gain can actually be the best thing for your health. Reviewed by Dietitian Jessica Ball, M.S., RD Getty Images.
On average obese people have a greater energy expenditure than normal weight or thin people and actually have higher basal metabolic rates. [45] [46] This is because it takes more energy to maintain an increased body mass. [47] Obese people also underreport how much food they consume compared to those of normal weight. [48]
“Variable weights and even weight gain can be normal, especially during the last two months of the year when candy (from Halloween), and major holidays and holiday parties are frequent,” says ...
In fact, the vast majority of us (70%) would prefer to lose 10 pounds than gain 100 friends. Perhaps even more surprising: 35% of Americans would rather lose 10 pounds than be debt free.
Success rates of long-term weight loss maintenance with lifestyle changes are low, ranging from 2–20%. [190] Dietary and lifestyle changes are effective in limiting excessive weight gain in pregnancy and improve outcomes for both the mother and the child. [191]
Set point theory can be construed as implying weight regulation in a wide or tight range around the set point, in a symmetric or in an asymmetric manner (i.e. treating weight gain and loss either the same or differently), and may apply to regulation of body fat levels specifically (in a multi-compartment model) or to overall body weight.