Psychologically, being overweight can affect your body image and damage self-esteem. In some cases this can cause social anxiety and depression.
difficulties breathing
difficulties walking or running
increased sweating
pain in the knees and back
skin conditions such as acne
high blood pressure
high cholesterol
diseases related to hardening of arteries such as heart attack and stroke (cardiovascular disease)
diabetes
some types of cancer.
These conditions are often known as obesity-related diseases and are some of the most common causes of death before the age of 75. This is why obesity increases your risk of mortality.