Dr Malcolm Mackay – General medical practice and lifestyle medicine

Dr Malcolm Mackay is a General Practitioner with more than 30 years of experience in medical practice. He has a broad range of skills across the full spectrum of general practice. He is based at Clinicare GP Clinic, Fitzroy, Melbourne and also provides Telehealth consultations for patients across Australia.

Book a telehealth consultation

Dr Mackay has a special interest in preventing and managing chronic disease with whole foods plant-based nutrition and other evidence-based lifestyle interventions. He is co-author of a website providing information and resources for those interested in this approach and is active in social media. Malcolm and his nutritionist partner Jenny host immersion retreats, seminars and webinars and often speak at public and private events.

Future events:

  • Plant-based nutrition webinar series: 4 sessions over 2 weeks, next series starts 11th January 2021
  • 6-day Plant-based health immersion retreat 21st to 26th February – WAIT LIST ONLY
  • Additional immersion now scheduled 21st to 26th March
  • NB our face-to-face seminars are on hold until further notice


  • Consultations (in person)
  • Telehealth consultations (within Australia)


  • Nutrition one-day seminars
  • Nutrition & liefstyle immersion retreats
  • Workplace nutrition programs
  • Webinars
  • Available for speaking events

Qualifications & Training

Medical degree

  • BMBS – Flinders University (1984)

Additional training

  • Graduate Diploma in Human Nutrition – Deakin University (1993)
  • Board Certified Lifestyle Medicine Physician (IBLM)
  • Plant Based Nutrition Certificate – eCornell
  • Certificate of Sports Medicine (ASMF/RACGP)

Professional affiliations

  • Fellow of the Australasian Society of Lifestyle Medicine
  • Doctors for Nutrition – GP Resources Advisor
  • GP Affiliate, Monash University

Recent conferences

  • International Plant-Based Nutrition Healthcare Conference USA, September 2019
  • Awarded Fellowship at the Australasian Society of Lifestyle Medicine Conference, Auckland, June 2019
  • Doctors For Nutrition Conference, Melbourne, February 2019 (workshop presenter)
  • Veg and Vines Lifestyle Medicine Conference, Gisbourne NZ, January 2019 (conference presenter)

Media presentations

For more information about whole foods plant based nutrition, visit my other website and associated Facebook page:

Vegetable oil, including olive oil, is energy dense and nutrient poor. Foods with these qualities are defined as junk foods and when consumed in significant amounts cause weight gain and/or nutrient displacement.

Vegetable oil is almost pure fat and has the highest energy density of any food, more than twice that of sugar. One Australian tablespoon (20ml) of oil provides 160 calories (670kj), the same number of calories as a can of Coke. Adding oil to a meal adds a lot of calories without any appreciable change in portion size. Most people continue to eat the same portion sizes, but the calorie content of the meal is higher, leading to systemic weight gain over time. Recent olive oil research in Australia had subjects consume 60ml of olive oil per day – that’s 480 calories (2000kj) which is about 20-25% of an average person’s daily energy needs. The study observed that energy intake increased by 428 cal (1800kj) per day when subjects added 60ml of olive oil to their diet. However, in the long term, subjects may partially compensate by eating less of other foods, which leads us to the other half of the junk food problem.

Vegetable oils contain very few nutrients. Most have some vitamin E but virtually zero protein, iron, calcium, dietary fibre, and very little omega 3 fats. The extraction of oil from olives, seeds, etc is a form of food processing that removes most of the nutrients: this includes cold pressed oils. Vegetable oils ‘displace’ nutrients from the diet. When we eat more calories from one source, we tend to eat less calories from other sources: eat more low nutrient ‘junk’ and you are likely to eat less nutrient rich whole foods. If 20ml of olive oil were to displace equal calories of wholemeal wheat pasta the nutrient ‘displacement’ would include 4.9g fibre, 2mg iron, 31mg calcium, 0.7mg zinc and 42mg magnesium.

Consuming vegetable oil adds a lot of calories but very few nutrients. If you reduce food intake to compensate for the extra calories you will have less nutrients. If you maintain food intake to conserve nutrients you will gain weight. It’s either weight gain, nutrient loss or a combination of both.

This 144g serve of cooked brown rice has the same number of calories as 20ml of oil (160 calories).

More information about oil - www.wholefoodsplantbasedhealth.com.au/no-oil/

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