Reason for poor health is excess not deficiency

Most poor health discussion is about getting enough protein, omega-3, calcium, potassium, etc. But the primary reason for poor health in most people is excess, not deficiency.

Look around, most people are obese. Diabetes, cancer, heart disease, etc is caused by excess of nutrients e.g. too much fat from animal leads to heart attack, too much protein can lead to cancer, etc.

If the size of your waist/hips is much more than your chest, then it is likely that you are consuming food in excess. One way to decrease calorie intake is to replace oily food by raw fruit/vegetables.