Low-Carb Diet for Older Adults: Protein, Strength, and Medication Safety

Highlights from two 2023 presentations by Laura Buchanan, MD, about metabolic health, low-carbohydrate nutrition, protein, frailty, and medication monitoring in older adults.

Medically reviewed by Tro Kalayjian, DO

Updated and medically reviewed August 28, 2026

Older adult preparing a protein-rich meal with salmon, eggs, avocado, and vegetables

In March 2023, Laura Buchanan, MD, gave two presentations about metabolic health, low-carbohydrate nutrition, and aging. The original Toward Health recap combined both talks under the title “Making an impact.” This article reorganizes that recap so the topics discussed in each presentation are easier to find and understand.

The material below summarizes historical presentations. It is not individualized medical or nutrition advice. Medication changes should be made only with the clinician who prescribes them.

Background on the two presentations

The original 2023 post described Dr. Buchanan as a certified metabolic health practitioner and a founding member of the Society of Metabolic Health Practitioners. Her stated mission was to help people age successfully and to educate patients about ketogenic nutrition and aging.

On March 23, 2023, she spoke to the Forsyth County Republican Women. On March 30, she gave a second presentation for the Healthy Aging Virtual Conference. The second event link used in the original recap is no longer live, so the event is named here without linking to the retired page.

For more background about the speaker, read Get to Know Dr. Laura Buchanan.

How the talks framed metabolic health and low-carb eating

The March 23 presentation focused on metabolic health, the modern food environment, and the use of a well-formulated ketogenic diet. According to the original recap, the talk described insulin resistance as a driver of metabolic disease, including obesity, diabetes, and high blood pressure.

The presentation used two theoretical examples. One described repeatedly eating high-carbohydrate meals and the resulting insulin response. The other used steak as an example in which insulin was described as increasing minimally and insulin resistance did not occur. The recap also said the talk addressed ghrelin, hunger, and the brain’s reward system.

“The US Dietary Guidelines have failed us. Only 7% of the United States has optimal cardiometabolic health based on their lipids, BMI, and blood sugar. I feel fortunate organizations like this are showing interest in low-carbohydrate education and recognizing it may have a role in improving our countries metabolic health,” said Dr. Buchanan.

This quotation and the interpretations above are preserved from the historical recap.

Protein, strength, and frailty in older adults

The March 30 presentation focused specifically on the safety and effectiveness of a well-formulated ketogenic diet for older adults. The original recap highlighted nutrient-dense, high-protein foods and their proposed role in maintaining muscle mass and strength and mitigating frailty with age.

The practical emphasis was not simply carbohydrate restriction. It was how nutrition choices could be considered alongside protein intake, strength, function, medications, and clinical support as people age.

Why medication monitoring was emphasized

The original recap said older adults may be at risk of becoming overmedicated when blood sugar or blood pressure improves rapidly after a dietary change. It emphasized that people taking medication for type 2 diabetes or high blood pressure need a clinician and an experienced team-based care model that understands low-carbohydrate interventions and safe deprescribing.

This is an important distinction: the presentation did not frame medication changes as a do-it-yourself step. It placed monitoring and deprescribing within clinician-supervised care.

“I was honored to give the talk on how to safely implement a ketogenic diet in the aging adult. I have had 80-year-old patients who were able to stop insulin by improving their metabolic health on a well formulated ketogenic diet. Empowering future dietitians with this knowledge is critical as more people start improving their metabolic health with a ketogenic lifestyle,” said Dr. Buchanan.

The patient example above is an anecdote from the original presentation recap. It should not be read as a result that can be expected by every patient.

Key takeaways from the 2023 talks

  • The presentations connected low-carbohydrate nutrition with a broader discussion of metabolic health and aging.
  • The older-adult presentation emphasized nutrient-dense protein, muscle mass, strength, and frailty.
  • Medication monitoring was presented as a central safety issue for people taking diabetes or blood-pressure medication.
  • The recap emphasized clinician-supervised, team-based care rather than changing medication independently.

If you want a practical overview of the approach, continue with How to Start a Low-Carb Diet in 5 Practical Steps.

To discuss nutrition, medications, and monitoring with a clinical team, explore Toward Health Direct Primary Care.

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