1. Avocados"One avocado a day can lower cholesterol" A study done by the "Journal of the American Heart Association" showed that avocados are a nutrient-dense source of monounsaturated fatty acids that can be used to replace saturated fatty acids in a diet to lower cholesterol. In the study 45 obese or overweight persons were selected and fed avocado for 5 weeks and at the end of the five weeks, their weight were significantly decreased. In the concluded of study, they have stated that one avocado a day can lower cholesterol and reduce weight.2. AlmondsA concluded study done by the "Journal of the American Heart Association" proven that almonds reduced bad cholesterol and reduced heart risk. In the study, they have stated that almonds are a healthy alternative to high-carbohydrate snack.3. RadishesThese are extremely low in calories and high in fiber, vitamins and antioxidants. Radish has a high water content that helps in increasing urination. Therefore, it helps to promote weight loss by removing accumulated toxin in the body.Low calorie count, high in fiber, potassium and vitamin C4. BlueberriesBlueberries have a sweet, refreshing taste and pack with plenty of flavour. The calorie content per cup of blueberries is just 84 and they are filled with fiber and manganese. Manganese and fiber help to reduce body fat by improving and speeding up your metabolic rate. It increases the calories you burn while digestion is taken place.Blueberries are very low in calories and this makes them a wonderful food for weight loss, because you can eat them in large amount while maintaining a low calorie intake.You can consider replacing your snack with blueberries, because they taste amazing and can be had alone on a daily basis.5. Chia seedsAlmost all of the carbs are fibers and it is high in protein. Research has shown that chia seeds have a high level of protein and omega 3 fatty acids. Chia seeds are also very high in fiber, calcium, potassium and antioxidants.Chia seeds have a nice taste and it helps you to lose weight by reducing your crave for food and speeding up your metabolism. They also help regulate blood sugar level.Important notice: Chia seeds absorb a lot of water so be sure to use 1 table spoon of chia seeds to an 8 ounce cup of water. If you don't do this, you might become dehydrated.