Dementia is Not a specific disease, It is a group of disease with conditions characterised by impairment of at least two brain working functions, such as memory loss and judgment. In the US, Dementia cases More than 3 million per year. this disease mostly affect 40+ age of people. It is also known as sarcopenic obesity, In US study found some factor, having a slender look but a high percentage body fat is associated with reduced memory and orientation skills. According to a study, Skinny fat'- the combination of low muscle mass and strength in the context of high-fat mass - in older adults may predict dementia and Alzheimer's risk. Study author Dr James Galvin said: 'Sarcopenia has been linked to global cognitive impairment and dysfunction in specific cognitive skills including memory, speed and executive functions.' Sarcopenia is the gradual loss of muscle mass.