Hi Welcome to HCM Dear , your husband s problem of anemia after knee replacement surgery , is very natural , though is a matter of concern . When our body undergoes any process like surgery or long term medication , it imbalances our metabolism and need further sensible treament to get to absolute health . Gulping on only meds will not help unless we take care of our life style and food habits to increase our immunity for flawless heath Best is to include regularly ,all essestial nutrients and supplements full of antixidants in natural form like veges,fruit, fiber ,vitamins , minerals , protien in right proportion . to increase iron intake , Inclde butter milk , lemon juice, honey , apple , banana , pomegranate dry dates ,spinach ,carrot , beetroot, tomato juice and soups and lot of water to remove toxin from body , which strengthns your immune system and help lead healthy life . For proper blood circulation , i would like to suggest you to follow ,regular physical activity regime , yoga - pranayam , Meditation , Bhramari ,deep breething, Kapalbhatti . Avoid processed foods carbs , sugar , fried ,fast foods , Tea , coffee ,alcohol and smoking , stress , sleeplessness and Constipation all will produce biochemical and metabolic conditions in your body that will decrease your immunity. So avoiding is definitely the first step in the right direction to detoxing the body, boosting the immune system . Regular check ups and tests are recommended Medical treatment suggested by your doctor can be complemented using a variety of alternative therapies. Most of these therapies or home remedies focus on strengthening your immune system so that you may over come the infection and inflammation quicker . Hope this helps solves your query .Take care .All the best .Get well soon Don t hesitate to come back in case of any further query .