Dan Buettner, longevity expert and founder of Blue Zones, spent his career studying the lifestyles of the planet's eldest inhabitants in order to guide others towards a centenarian life. In a new TikTok video, he put a spotlight on the elusive 'Blue Zone' of Okinawa, Japan, where locals cherish one food that contributes extensively to their lifespan-Sweet Potato. "Want to live longer? Eat more sweet potatoes."...Forget the latest diet trend - longevity is built on simple, whole foods like this. They are full of complex carbohydrates, they have protein, they are cheap, they taste delicious, they are full of micronutrients," Buettner emphasised.But Besides Complex Carbs, What Else Does Sweet Potato Offer? These Tuberous Roots Lower Disease RiskSweet potatoes are rich in antioxidants, including beta-carotene, vitamin A, and vitamin E. According to health experts, vitamin E plays a crucial role in reducing cell damage, lowering inflammation, and supporting immune function, all of which contribute to a lower risk of chronic diseases. Additionally, these tubers contain vitamin C, an essential nutrient that strengthens immunity and promotes healthy skin.They Support Eye HealthCarrots may be famous for supporting vision, but sweet potatoes also offer significant eye health benefits. They contain vitamin A, lutein, zeaxanthin, and beta-carotene, which the body converts into vitamin A. These nutrients work together to help prevent cell damage that could lead to deteriorating eyesight, making sweet potatoes a great choice for maintaining healthy vision.Packed With Fibre, Great For Digestive HealthLike many fruits and vegetables, sweet potatoes are packed with fibre, which plays a key role in digestive health. They contain both soluble and insoluble fibre, each offering different benefits. Soluble fibre absorbs water in the gut, forming a gel-like substance that improves stool consistency and may help ease diarrhoea. On the other hand, insoluble fibre adds bulk to stool, promoting regular bowel movements and helping to alleviate constipation.Sweet Potatoes Boost Heart HealthFor those looking to improve heart health, sweet potatoes can be an excellent addition to the diet. The fibre in sweet potatoes helps lower LDL (bad) cholesterol, which can reduce the risk of heart disease. Additionally, their fibre content helps regulate blood sugar and combat inflammation, both of which are important for cardiovascular well-being. Furthermore, the antioxidants in sweet potatoes help reduce oxidative stress and protect blood vessels, further supporting heart health.Choosing the Best Sweet PotatoesWhen shopping for sweet potatoes, experts recommend selecting firm ones without bruises or soft spots. Sprouting sweet potatoes should be avoided, as this indicates ageing and potential nutrient degradation.How to Enjoy Sweet Potatoes? Sweet potatoes are highly versatile and can be prepared in various ways, just like white potatoes. Popular methods include mashing, baking, roasting, and steaming. They can be incorporated into both savoury and sweet dishes, making them a staple ingredient in many cuisines.They can be mashed and added to baked goods like bread and pies or used as a base for biscuits, doughnuts, and cakes. Sweet Potato puree serves as a flavorful and nutritious addition to sauces and soups. Blending cooked sweet potato with stock and seasoning with salt, pepper, and spices creates a rich, creamy sauce. Sweet potatoes also work well in hearty soups, adding depth and a naturally sweet flavour. Another method is by roasting. They can be cut into wedges or strips for a healthy alternative to fries.