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Related Concept Videos

Lipids: Dietary Sources and Requirements01:18

Lipids: Dietary Sources and Requirements

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Lipids are an essential component of a balanced human diet. Triglycerides, which make up the majority of dietary lipids, are found in both saturated fats—commonly present in meat, dairy products, and certain tropical plants like coconut, and hydrogenated oils such as margarine and baking shortenings (trans fats)—and unsaturated fats, which are abundant in seeds, nuts, olive oil, and most vegetable oils. The main sources of cholesterol include egg yolks, various meats and organ...
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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
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Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
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Consuming animal-based products offers high-quality proteins that contain optimal levels and combinations of essential amino acids, crucial for tissue repair and growth. Foods like eggs, milk, fish, and most meats are a source of complete proteins. Legumes and cereals are abundant in proteins; however, they typically lack a full range of essential amino acids. As a result, they are considered incomplete protein sources. Some plant sources like soybeans, quinoa, and amaranth do contain complete...
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Many animals exhibit parental care behavior, including feeding, grooming, and protecting young offspring. Parental care is universal in mammals and birds, which often have young that are born relatively helpless. Several species of insects and fish, as well as some amphibians, also care for their young.
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Related Experiment Video

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Quantitating Iron Transport Across the Mouse Placenta In Vivo Using Nonradioactive Iron Isotopes
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Nutrient Requirements during Pregnancy and Lactation.

Marie Jouanne1, Sarah Oddoux2, Antoine Noël2

  • 1Université de Caen Normandie, UNICAEN, CERMN (Centre d'Etudes et de Recherche sur le Médicament de Normandie), F-14032 Caen, France.

Nutrients
|March 6, 2021
PubMed
Summary

Maternal nutrition is vital for both mother and child. This review examines current recommendations for micronutrient and omega-3 fatty acid intake during pregnancy and lactation in the US, Canada, and Europe.

Keywords:
lactationmicronutrientsneedspregnancysupplements

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Area of Science:

  • Nutrition Science
  • Maternal Health
  • Public Health

Background:

  • Maternal nutritional status critically impacts maternal and offspring health.
  • Nutritional needs during pregnancy and lactation significantly differ from non-pregnant states.
  • Current global recommendations for prenatal and postnatal nutrient supplementation vary.

Purpose of the Study:

  • To review and synthesize scientific literature on current micronutrient and omega-3 fatty acid recommendations.
  • To compare guidelines for intake during pregnancy and lactation across the United States, Canada, and Europe.
  • To discuss the evidence supporting dietary supplement use and optimal nutrient dosages.

Main Methods:

  • Literature review of scientific studies and official guidelines.
  • Analysis of data on maternal physiological adaptations and nutritional requirements.
  • Examination of recommendations for specific vitamins, minerals, and omega-3 fatty acids.

Main Results:

  • Identified variations in supplementation strategies across different regions.
  • Detailed the specific requirements for key micronutrients and omega-3s.
  • Highlighted the importance of personalized nutritional advice.

Conclusions:

  • Current recommendations for maternal micronutrient and omega-3 fatty acid intake show regional differences.
  • Evidence supports tailored supplementation based on individual needs and physiological status.
  • Further research can clarify optimal dosages and benefits of various supplementation forms.