However, recently, a doctor has revealed a very simple and easy secret that you can start doing today to add many years to your life.

Dr Nighat Arif, a doctor working for the UK's National Health Service, said: It's not genetics, it's not exercise, it's not diet, it's not your career, it's not money, it's not your IQ, it's not being famous. The secret to longevity is much simpler. It's positive relationships. This makes us happier, healthier and lives longer, according to the Express .

However, Nighat Arif is not the only one who emphasizes the importance of happy relationships. This is also confirmed by prestigious research from a world-renowned university.

An 85-year study by Harvard University (USA) has also found the secret to making us happier and living longer.

A study of more than 700 people found that social relationships help us stay healthy and live longer. Scientists have found that the quality of relationships is very important.

They found that people with happy marriages and positive relationships had a lower risk of cardiovascular disease.

The authors concluded: Contrary to what you might think, it's not career success, money, exercise or healthy eating. The most consistent finding we've come across over 85 years of research is this: Positive relationships make us happier, healthier and help us live longer, according to CBBC .

On the other hand, other studies have shown that negative or disappointing interactions with family and friends lead to poorer health.

Furthermore, having a network of important relationships can also make a difference.