Catalano PM Obesity and pregnancy--the propagation of a viscous cycle? J Clin Endocrinol Metab. 2003 Aug;88(8):3505-6. doi: 10.1210/jc.2003-031046. No abstract available.
Conde WL, Monteiro CA Nutrition transition and double burden of undernutrition and excess of weight in Brazil. Am J Clin Nutr. 2014 Dec;100(6):1617S-22S. doi: 10.3945/ajcn.114.084764. Epub 2014 Oct 29.
Davenport MH, Cabrero MR Maternal nutritional history predicts obesity in adult offspring independent of postnatal diet. J Physiol. 2009 Jul 15;587(Pt 14):3423-4. doi: 10.1113/jphysiol.2009.174896. No abstract available.
Guo SS, Wu W, Chumlea WC, Roche AF Predicting overweight and obesity in adulthood from body mass index values in childhood and adolescence. Am J Clin Nutr. 2002 Sep;76(3):653-8. doi: 10.1093/ajcn/76.3.653.
Kaul P, Bowker SL, Savu A, Yeung RO, Donovan LE, Ryan EA Association between maternal diabetes, being large for gestational age and breast-feeding on being overweight or obese in childhood. Diabetologia. 2019 Feb;62(2):249-258. doi: 10.1007/s00125-018-4758-0. Epub 2018 Nov 13.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
