Eating too much fatty and unhealthy food and Not doing any exercise can cause humans to put on weight. Thyroid problems can cause you to put on weight. From when you are born until you stop growing it is normal for you to put on weight at a steady pace.
(additional answer) Prior to civilization, when people lived as hunter-gatherers, it was common that people would experience periodic changes in the abundance of food; sometimes they would have lots of food available, and sometimes very little if any. So when there was lots of food available, people would eat a lot and gain weight; this extra weight would then act as a stored food reserve for times when there was very little food available. In a temperate climate, people might gain weight every summer and then lose weight every winter. Now, with food readily available all the time, this adaptation does not serve people as well as it used to. People gain weight and then they gain more weight, and they don't lose it.
Yes, tapeworms can cause weight gain in humans by absorbing nutrients from the host's digestive system, leading to increased appetite and potential weight gain.
Yes, certain parasites can cause weight gain in humans by affecting the body's metabolism and nutrient absorption.
I'm guessing the same way humans do...EATING.
Bread
As humans, we need to have a certain amount of substance in our bodies, so we start to gain muscle instead of losing weight when we exercise.
Has the child seen a pediatrician? Usually, most humans gain weight after birth, until they reach a certain point, at which they stabilize until middle age, when they gain a bit more. See a doctor.
Cats gain and lose weight for the same reasons that humans do. It's based on their caloric intake and their metabolism.
Yes you do gain weight.
does cherry gain weight
Weight Gain Is a common side effect of Insulin
While people with chlamydia may gain weight, chlamydia does not itself cause weight gain.
yes it does cause weight gain!