Scientists from the Harvard T.H. Chan School of Public Health (USA) have published research in the American Journal of Clinical Nutrition, suggesting that adhering to an environmentally-friendly diet can significantly reduce the risk of early death and increase human longevity.
The recommended diet by the experts comprises mostly plant-based whole foods, with a reduction in meat and dairy consumption. This dietary approach is believed to decrease the chances of premature death by 30%.
The researchers examined the long-term impact of following environmentally-conscious dietary guidelines. This involved focusing primarily on plant-based foods, including whole grains, fruits, vegetables, nuts, and legumes, while minimizing meat and dairy intake.
A healthy diet contributes to longevity
Specifically, the suggested meal plan consists of half fruits and vegetables, with the remaining half primarily comprising whole grains, plant-based proteins, and unsaturated vegetable oils (such as peanut, soybean, sesame, corn, or avocado oil). A small amount of animal protein can also be included.
According to Professor Walter Willett, an epidemiology and nutrition expert at Harvard University, changing eating habits can help slow down Earth’s climate change. What is healthiest for the planet, he argues, is also healthiest for humans.
The scientists analyzed data from over 200,000 participants in long-term studies, some spanning decades. They found that those who closely followed the environmentally-friendly, healthy diet had a significantly lower risk of premature death, reducing it by up to 30% compared to those less adherent.
A healthy human diet also contributes to a healthy planet
This reduced risk encompasses multiple causes of early death, including cancer, heart disease, and lung ailments.
The study highlights the positive impact of this diet on both human longevity and the environment. The highest adherence to these guidelines resulted in substantial environmental benefits, including a 29% reduction in greenhouse gas emissions and a 21% decrease in fertilizer use.
