High-fat diet is a diet rich in fats, especially saturated (animal or tropical oils) fats, consisting of at least 35% of total calories is consumed from fats, both unsaturated and saturated. High-fat diets are not recommended for those with arthritis, cancer, cardiovascular disease, diabetes, hypertension, obesity or stroke. We have already known that eating too many fatty foods can result in obesity-related diseases and mental health problems. Eating fatty foods can lead to daytime sleepiness as well as sleep problems at night, according to a study from the University of Adelaide. Ironically, new research shows that fatty foods may not only be adding to your waistline but may also be aggravating Alzheimer’s disease, and causing depression and anxiety. An international study led by UniSA neuroscientists Professor Xin-Fu Zhou and Associate Professor Larisa Bobrovskaya discovered a clear link between mice fed with diet rich in fat for 30 weeks, which results in diabetes, deterioration in their cognitive abilities, including developing anxiety, depression and worsening Alzheimer’s disease.