2. Meat has high-quality protein and is rich in amino acids that are beneficial to neurotransmitters, such as tryptophan and histidine, a deficiency of which can lead to depression, sleep disorders, anxiety and more. So for people at high risk of depression, you can eat some meat, not only to get a more comprehensive nutrition, but also to help mental health. But eat meat to have a "bottom line", eat more fresh meat, eat less processed meat, more low-temperature cooking, less frying and grilling.