It’s no secret that the key to reaching 100 – or beyond – lies in a healthy diet, regular exercise and smart lifestyle choices.
Scientists suggest that while genetics account for approximately a quarter of the variation in lifestyle, the majority is down to how we look after our bodies.
Emily McDonald, a neuroscientist and mindset coach from Arizona, regularly shares tips on brain health and claims to have reversed her biological age to 18.
Her approach focuses on three lifestyle factors that she believes can help others achieve the same results.

In a recent post, she began by highlighting the importance of regulating blood sugar levels to maintaining a young body.
“If you want to look younger and feel younger in your body, these are some things that I would do,” she told viewers.
“The first thing is to regular your blood sugar. Glucose spikes are linked to ageing, both brain ageing and wrinkles.”
Emily also stays away from processed foods as part of this approach.
Her second focus is stress management, which she notes can be controlled with the right mindset.
“I was doing my PhD, teaching, doing research, all while building a social media platform on the side, and now I’m the CEO of my own business and I rarely get too stress,” she shared.
“Stress is a mindset, you can have a lot of things going on and not be overly stressed”.
Her third recommendation centres around maintaining a playful outlook on life.
LATEST DEVELOPMENT
- What is vitamin B12? Doctor shares signs you’ve been deficient for years
- The habit to develop for ‘better cognitive function’ in your 70s – especially if you’re under 50
- Doctor’s warning to patients with low vitamin B12 levels as symptoms could show up in their mouth

“The last really big thing that has made a huge difference is awakening my inner child, not taking things too seriously all the time.”
As a whole, Emily’s tips align with broader scientific findings on lifestyle choices and longevity.
Researchers have shown that a diet high in unhealthy fats and sugar leaves cells more vulnerable to damage.
Ultimately, this can pave the way for further complications in the form of infections, cancer and diabetes.
