According to The Lancet Public Health, your odds of dying are higher if you switch carbohydrates for animal-derived fat or protein but longevity odds increased with the switch to plant-based protein.
Those who get 50-55% of their daily energy from carbohydrate saw a low risk of mortality.
A ‘U’ shaped curve was identified indicating that too little or too much carbohydrate affected mortality negatively. If less than 40% or more than 70% of your daily energy comes from carbohydrates in your diet you are at risk.
The study followed over 432,000 US adults age 45-64 over 25 years.
Bottom Line – measure, check not too much or too little and live longer and healthier.