For now, all we know is that there's definitely something happening, which is likely a combination of biological and psychological processes, and it contributes to a reduced appetite and reduced cravings for foods, especially the foods that no longer taste as good as you remember them tasting
Try a lighter dinner, earlier alcohol, and a cooler room for two weeks, then reassess
The choice between injection and pill depends on which medicine is prescribed, personal preference, and overall health needs
Arch Gerontol Geriatr 46:181190 Passeri M, Cucinotta D, Bonati PA, Iannuccelli M, Parnetti L et al (1990) Acetyl-L-carnitine in the treatment of mildly demented elderly patients