Meat costs a lot of energy to produce. In addition and cattle produce the greenhouse gas methane. Generally, poultry and fish are less harmful to the environment. Also some meats are high in saturated fat, which can raise blood cholesterol levels if you eat too much of it. If you eat a lot of red or processed meat, it’s recommended that you cut down as there is likely to be a link between red and processed meat and bowel cancer.
Most people in the UK eat more meat that necessary for good health. The National Health Service recommends you eat no more than about 70 grams of meat per day or 500 grams (1 pound) per week.
Making healthier choices can help you eat meat as part of a balanced diet as well as being better for the environment..
Thus, both for health reasons, to save money and protect the climate it is good with a couple of meatless days during the week. An added benefit is that after a few weeks, you will start to enjoy vegetables more, and in general, start to eat healthier.