New Delhi, April 7 -- A major study by researchers from Harvard's T.H. Chan School of Public Health has shown that eating a healthy diet in your 40s, 50s and 60s can help you age well.

The research tracked over 1 lakh Americans for nearly 30 years and found that those who ate nutritious food were more likely to reach the age of 70 without major illnesses like diabetes, high blood pressure or heart problems.

The study says we should eat more fruits, vegetables, whole grains, nuts, lentils, healthy fats (like those in fish or olive oil) and low-fat dairy. All these foods are linked with better chances of healthy ageing.

At the same time, the study warns against certain food items. Sugary drinks like colas and packaged fruit juices, highl...