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Sunny side up for eggs and cholesterol

A new study from the University of South Australia confirms that eggs are not high in cholesterol and do not contribute to cardiovascular disease. In contrast, saturated fat intake was found to increase LDL levels, highlighting the importance of dietary balance for heart health.

SourceUniversity of South Australia·JournalAmerican Journal of Clinical Nutrition·TypeCase study·DateJul 17, 2025

Wellcome Sanger Institute: Multiple organ functions of yolk sac revealed by early human development map

Researchers from the Wellcome Sanger Institute mapped the multiple organ functions of the human yolk sac, revealing its role in producing key hormones and blood cells. The study provides novel insights into the earliest stages of immune cell development and has implications for understanding childhood diseases.

SourceWellcome Trust Sanger Institute·JournalScience·TypeObservational study·DateAug 17, 2023

Bad news for egg lovers

A large study of nearly 30,000 adults found that consuming 300 mg of dietary cholesterol per day increases the risk of cardiovascular disease by 17% and death by 18%. The study also linked eating three to four eggs per week to a 6% higher risk of cardiovascular disease and an 8% higher risk of any cause of death.

SourceNorthwestern University·JournalJAMA·DateMar 15, 2019

Eggs without yolk can hatch too

Biologists from KU Leuven discovered that nematode eggs can hatch without egg yolk, defying the rule that no yolk means no offspring. The finding opens new avenues for deworming products without side effects on humans.

SourceKU Leuven·JournalScientific Reports·DateNov 12, 2015

New path of origin for macrophages

Researchers at TUM discovered that macrophages can originate from two distinct cell lines: one from hematopoietic stem cells and the other from yolk sac cells. The study reveals that yolk sac-derived macrophages migrate to organs during embryonic development and remain there, while blood-circulating macrophages are replaced by stem cells.

Boy or girl? In lizards, egg size matters

Research shows that in one lizard species, bigger eggs tend to produce females and smaller eggs tend to produce males. This discovery contradicts the long-held assumption that genetic factors control sex determination in reptiles.

SourceCell Press·JournalCurrent Biology·DateJun 4, 2009

How to grow a bigger brain

Researchers found that fish raised with environmental features, such as small stones, had larger brains and a more developed cerebellum than those without. The study's findings could impact the design of hatcheries for breeding fish to restock wild populations.

SourceUniversity of California - Davis·JournalJournal of Experimental Biology·DateMar 6, 2006