Eating less than your normal calorie requirements is generally the prime cause of weight loss, says Komal Jethmalani.
Lack of physical exercise lowers the body's lean mass, reduces the metabolic rate and causes increase in fat percentage, warns Komal Jethmalani.
Although we all have tastebuds that are dying to sample all the yummy food around us, we must remember that anything in excess is bad.
Plant foods are rich in whole grains, fruits and vegetables, which provide many essential nutrients including fibre, says nutritionist Komal Jethmalani.