The Short Answer

New research shows that eggs don’t increase cholesterol or heart disease risk when eaten as part of a healthy diet: even for people with pre-diabetes or Type 2 diabetes. For autoimmune patients, including those with Hashimoto’s low thyroid, eggs are nutritious and safe to eat unless you have a documented immune reaction to them. Cholesterol itself is essential for hormone production, brain function, and immune health.

Recent research debunks the egg-cholesterol myth

For decades, we’ve been warned that dietary cholesterol in eggs raises heart disease risk. New research now shows this concern is unfounded, at least when eggs are part of a balanced diet that replaces saturated fats with healthy monounsaturated fats like olive and avocado oil.

Scientists tracked two groups over 12 months: one eating 12 eggs per week, the other eating fewer than two. Neither group showed increased heart disease risk markers, and both lost comparable amounts of weight. The conclusion is clear: eggs don’t sabotage cholesterol levels or weight management when your overall diet is sound.

Why eggs are nutritious for autoimmune patients

Egg yolks contain vitamins and minerals critical for people managing autoimmune conditions. They’re rich in choline (important for brain and nerve function), selenium (immune support), and lutein (eye health). For autoimmune patients without an egg sensitivity, they’re an excellent, affordable protein source.

However, some people with autoimmune conditions can develop immune reactions to eggs. If you suspect this applies to you, testing through Cyrex Labs, which specializes in food reactivity panels, can provide clear answers. At RedRiver, we often use such testing to identify hidden triggers that worsen inflammation or autoimmune flares.

Cholesterol is essential, not the enemy

Cholesterol isn’t inherently bad; your body needs it. Understanding this distinction matters for anyone managing a chronic autoimmune condition.

Cholesterol is present in every cell and serves critical functions:

• Vitamin D production: essential for immune regulation
• Cell membrane structure: determines how nutrients and signals enter cells
• Bile acid production: necessary to digest fats and fat-soluble vitamins (A, D, E, K)
• Hormone synthesis: cholesterol is the raw material for adrenal hormones, estrogen, progesterone, and testosterone
• Brain function: the brain is primarily composed of fat; dietary cholesterol supports neuron structure, insulation, and communication

For autoimmune patients, adequate cholesterol levels are especially important because immune and cognitive function depend on it.

Understanding HDL, LDL, and other cholesterol markers

Not all cholesterol measurements are equal. Your doctor should evaluate multiple markers, not just total cholesterol.

High-density lipoprotein (HDL): The “good” cholesterol. HDL removes plaque from arteries and protects against heart disease.

Low-density lipoprotein (LDL): Often called “bad” cholesterol, LDL can form arterial plaque when oxidized or in small, dense particle form.

Triglycerides: Elevated levels correlate with heart disease and diabetes risk. They increase from smoking, sedentary lifestyle, excess alcohol, obesity, and a diet high in sugar and refined grains.

Lipoprotein (a) or Lp(a): High levels indicate strong genetic heart disease risk.

More important than any single number is the ratio between HDL and LDL, particle size, and the triglyceride-to-HDL ratio. Small, dense particles are more dangerous than large ones because they can more easily penetrate arterial walls. Many doctors now consider non-HDL cholesterol (total cholesterol minus HDL) a better risk predictor than total cholesterol alone.

Some people inherit genetic tendencies toward very high cholesterol and may need medication alongside lifestyle changes.

Contact RedRiver Health and Wellness to work with a functional medicine doctor who can assess your individual tolerance to eggs and optimize your cholesterol levels for autoimmune health.