Cordyceps supplements should be used with caution by individuals with autoimmune diseases, as it may stimulate the immune system. Those with bleeding disorders or on anticoagulant medications should also be cautious, as cordyceps might slow blood clotting. Additionally, individuals with diabetes should monitor their blood sugar levels closely, as cordyceps might lower blood sugar. Since there is not enough reliable information on the safety of using Cordyceps during pregnancy or breast-feeding, it’s best for pregnant and nursing women to avoid use. Always consult a healthcare professional before adding new supplements to your regimen.