List the disadvantages of insulin obtain | Class 12 Biology Chapter Biotechnology and its Application, Biotechnology and its Application NCERT Solutions

Insulin controls the level of glucose in the blood, which is synthesized by the β- cells of the islets of Langerhans in the pancreas. Insulin deficiency manifests itself as diabetes mellitus shows complex of symptoms which may lead to death if untreated. Some disadvantages of insulin obtained from the pancreas of slaughtered cows and pigs are as follows:

1. For curing the diabetes, by giving continuous dose of insulin injection to the patient which is obtained from the pancreas of pigs and cows may lead to problems and side effects like allergic reactions in some patients.
2. Slaughtering of animals are not allowed for insulin, it is against our ethics; because large number of animals needs to cut or murdered for obtaining small quantities of insulin.
3. Cost of insulin is very high when obtained from these slaughtered animals.